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experience quality.
Lockit Timecode Master Lockit
ACN-ML
Rev. 4.10
ACN-ML experience quality.
Rev. 4.10
www.ambient.de/en 1
Table of contents page
1. Introduction 4
2. Package Contents 4
3. Safety Instructions 5
4. Powering 6
5. Unit Description 7
6. Connections 8
7. Quick Start Guide 9
8. Web Interface 11
Title Bar 11
Help 11
Firmware Update 12
WiFi Settings 13
System Reset 13
About 13
Reboot 13
Shutdown 13
Tabs of the Web interface 14
Timecode 14
ACN Radar 15
Connected Devices 16
Metadata Live View 18
Metadata Export 19
Remote Control 20
Meters 21
Tracks 21
Current and Upcoming Clip 22
History 22
Creating a Sound Report from the Master Lockit’s web interface 25
ACN-ML
Rev. 4.10
©2016, Ambient Recording GmbH 2
9. Menu Description 27
Main Menu 29
Mode Menu 29
TC Menu 31
FPS 31
Jam 31
Output 32
Level 32
Mute 32
Offset 32
UB 32
Jam 33
Edit 33
Sync Menu 34
Video 34
Audio 34
PPF 34
Slate Menu 35
Display 35
LEDs 35
Sensor 35
ACN Menu 36
C-Jam Sync Modes 36
Ant 37
SYS Menu 38
Menu 38
Config 38
Display 39
Ant 39
USB / LemoACN 39
Bat 40
IR 40
Reset 40
Info 40
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10. LED Blink Codes 40
11. Application Notes 42
12. Physical Specifications 44
13. ACN Radio 44
14. Timecode, Metadata, and Power Supply Cables 45
ACN-RCP 45
MLC-CL 45
MLC-HID 45
MLC-L1B10 45
MLC-L1B10P 46
AK-HS4 46
AK-HS4-LOB2 46
AK-HS4-PC2M 46
LTC-OUT 46
LTC-OUT/ Epic 47
TC-I/O 47
LTC-OUT35/35F 47
15. Warranty 48
16. Approvals 48
ACN-ML
Rev. 4.10
©2016, Ambient Recording GmbH 4
1. Introduction
The ACN-ML Master Lockit combines the state of the art, high-accuracy Lockit timecode technology by
Ambient with advanced metadata administration and sharing over the Lockit Network.
It implements a dual-system design through a full-featured ACN Lockit circuitry with adapted software
for no-compromise, fail-safe timecode integrity and a powerful multi-core CPU platform for
unsurpassed mobile metadata processing. Providing local and set-spanning, line-level accurate
timecode and metadata over ACN plus WiFi routing for Lockit Network apps and certified devices it can
work both autonomously as hub or satellite in your timecode and metadata network.
An integrated backup cell with automatic charge-when-supplied will keep both systems alive for even
lengthy set reconstructions or breaks and secure a coordinate shutdown on power drain.
2. Package Contents
• ACN-ML Master Lockit
• ACN Antenna (attached to ACN-ML)
• USB WiFi Stick (attached to ACN-ML)
• Manual
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3. Safety Instructions
For your own safety and trouble-free use of your ACN-ML Master Lockit, please carefully read through
the instructions below. Always keep a copy of these instructions and hand them out with the unit to
other users.
This unit is exclusively intended for indoor use. Keep it safe and away from water, rain and humidity
and dry under all circumstances even when powered off. Clean gently with a slightly moistened cloth
and never let water, detergents or liquids of any kind get into the unit as this will imply the risk of short
circuits and electrical hazard.
Keep distant from sources of heat and never expose to direct sunlight. Admissible ambience
temperature is from +5° to +50° Celsius.
Do not throw or expose to mechanical impact and keep it safe from hard vibrations.
Only use genuine accessories such as cables antennae etc. which have been included with the unit or
supplied by an authorized dealer. Always observe integrity and the pertinent compatibility with all units
connected to.
Powering from external sources is exclusively limited to the use of LPS sources in compliance to part
2.5 of EN 60950-1 with correct polarity, voltage range, and current rating. Disregarding recommended
power requirements may damage the product or even risk explosion of the internal backup cell.
Do not perform software updates in situations in which the integrity of mains supply cannot be granted
such as thunderstorms and remove connections from and to all devices directly or in directly
connected to mains.
When using the wireless connection, place it centrally and keep it distant from sources of possible
interference such as microwaves or electrical devices with large metal surfaces.
Only use the original external antenna directly and firmly attached to the socket. Extension or use of
3rd party accessories is not permissible.
Only use the included WiFi dongle that was carefully evaluated for best performance, and leave it
connected all the time. (Re-) attaching the WiFi dongle during operation will require a system restart.
Never open the unit. Inappropriate and unauthorized access will void the warranty and imply possible
risk of harm to the user.
When disposing the unit, follow the legal requirements for recycling electronic equipment.
ACN-ML
Rev. 4.10
©2016, Ambient Recording GmbH 6
4. Powering
The ACN-ML can be powered by 6 to 24 Volts DC via either indicated Hirose 4-pin connectors, pin 1
carrying GND pin 4 positive voltage. The connectors are configured loop-through. Only apply power
through one socket.
Upon applying external power the internal battery will automatically be charged. The power source
must be capable of supplying 1.5A for charging the internal battery.
While in operation, the active power source is indicated in the upper right corner of the display, EXT
means external power is applied with appropriate voltage and current, whereas INT indicates that the
unit is running on its integrated backup cell.
Typical values in operation with backup cell charged/in charging:
~ 500mA/850mA @ 6V DC
~ 250mA/400mA @ 12V DC
~ 150mA/200mA @ 24V DC
The Master Lockit must only be powered from either of its 4-pin Hirose sockets. The operating voltage
range is 6-24V DC regulated, with pin 1 being GND and pin 4 carrying V+ per the industry standard.
Note: The two power sockets are wired in parallel for loop through of voltage. It is mandatory
that only one socket must carry supply voltage at any given time!
With power applied, red LED over the display will slowly blink to indicate charging of the integrated
backup cell. Fully charged, red and green LED will be lit permanently. The battery will keep the unit
powered for a couple of hours, depending on the processing load of the unit.
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5. Unit Description
⑬ ⑭
① WiFi adapter, attached to USB A port
② USB A port, not in use
③ DC IN / through, 4 Pin HRS (see page 4)
④ Ethernet port for metadata transfer, RJ45
⑤ OLED display (see page 14 ff)
⑥ IR transceiver, communication port for ACC501 controller
⑦ 3-function configuration switch (3-function:↓ pushing in, ↔ toggle left/right)
⑧ Status LEDs (see page 26)
⑨ ACN antenna, SMA type, attached to unit (do not remove)
⑩ Lemo / ACN socket (see page 27)
⑪ Lemo / TC socket (see page 27)
⑫ DC IN / through, 4 Pin HRS (see page 4)
⑬ Reset button (see page 13)
⑭ 3/8” thread mount
① ② ③ ④ ⑤ ⑥ ⑦ ⑧ ⑨ ⑩ ⑪ ⑫
ACN-ML
Rev. 4.10
©2016, Ambient Recording GmbH 8
6. Connections
Lemo connectors are series 0B 5-pin (matching connector FGG/JGG.0B.305.CLADxx)
External Power on ACN-ML is only available through 4 pin HRS, do not connect Lemo cables with power
supply to the ACN-ML.
⑩ “ACN”: “Blue” socket, connect blue coded cables here.
Timecode and metadata port.
pin 1: GND
pin 2: LTC IN
pin 3: RS232 TX
pin 4: RS232 RX
pin 5: LTC OUT / 3.3 Volts DC OUT
⑪ “TC” Timecode, ext. DC and tune port
pin 1: GND
pin 2: LTC IN
pin 3: ASCII IN / OUT
pin 4: Tune reference out
pin 5: LTC OUT
③ & ⑫ “DC In” 4 pin HRS size 7. ONLY supply power through either socket, use 2nd
outlet
exclusively for power tap.
Pin 1: GND
Pin 2: NC
Pin 3
Pin 4: + 6-24V DC
① & ② “ “ USB A ports, 1 populated with WiFi Stick, 2nd
for future purposes
” Ethernet port, RJ45, metadata interface to ARRI ALEXA ④ “
⑨ “ANT” SMA type F, leave supplied antenna attached, only substitute with original
replacements ANT-2.4-SMA-M(90)
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7. Quick Start Guide
Prepare for a new project
1. Supply adequate power source. The red LED should blink slowly in a 2 seconds interval. This
indicates charging of the internal backup battery is in progress. If battery is filly charged red and
green LED will come on solid.
2. Switch on the Master Lockit by pressing down the 3-function wheel and holding it until the
OLED display comes on.
3. Wait until the square indicator on the left bottom of the display has become solid blue to
indicate the metadata server has completed booting. Use a smartphone, tablet or computer to
log in to the Master Lockit’s WiFi. The password for log in will be the same as the WiFi name.
The default setting will be displayed in the format ml-rssss (where “r” indicates the hardware
revision and “s” consists of the last 4 digits of the unit’s serial number). This can be changed by
the user.
4. Open a browser and enter http://masterlockit.local respectively http://10.0.0.1. or open the
Master Lockit Web Interface in TonMeister or LockitSCRIPT App.
5. If desired Rename WiFi through the System drop down menu on the right for better
identification. Especially for multi-camera shoots, it is highly recommended to rename the
Master Lockit’s WiFi name to clearly identify its position and determine whether or not the unit
is set to hub mode. You do that in the “WiFi Settings” within
the “Settings” Menu, or by just hitting the WiFi symbol in the header. After hitting reconfigure,
the Master Lockit will reset its WiFi so you will need to log in again with new credentials.
Note: This name must be at least 8 digits long. Names like “soundcart_HUB”, “camera-1”, or
simply ascending numbers can later greatly help to better identify the individual units. This
works well with the option to assign unit names in the ACN radar page of the hub.
As indicated renaming the Wifi requires a reboot which can also be done through the system
drop down menu.
6. Continue with the next Master Lockit – one after another. After that enable Hub Mode on ONE
– and ONLY ONE – of your Master Lockits by switching it to “Hub” on the upper right corner of
the headline. Now the interface will turn from blue to orange.
WARNING: Only one Master Lockit is allowed to be set to hub mode for proper metadata
networking. Also, only one unit must be sending out a C-Jam broadcast. Although not
mandatory, it’s still advised this to be the hub. Make sure that all the others are in “satellite”
mode (blue interface).
ACN-ML
Rev. 4.10
©2016, Ambient Recording GmbH 10
7. Select the Timecode tab on your Hub. Check the Frame Rate (FPS), Set Timecode manually or
to Time of Day and then enable Master to send out C-Jam broadcasts. All other Lockit devices
on the same channel will jam to the hub’s TC value and framerate. This channel is set to 18 by
default in C-Jam mode, If you change it on the C-Jam master you must also adjust your slaves
accordingly.
8. ACN enabled Lockit devices in range will now appear in the ACN Radar to the right.
Congratulations, you have successfully configured your Lockit Network! All you need to do now
is switch on the units every morning, set TC on your hub, enable C-Jam Master, and look at the
battery status of the remote units within the web interface every so often to know when
replacement is required.
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8. Web Interface
The interface of the Master Lockit can be accessed through any WiFi equipped device using a common
browser. Log in to your Master Lockit’s WiFi. The required password always reflects the SSID. Default
SSID follows pattern ml-rssss where “r” indicates the hardware revision and “s” consists of the last 4
digits of the unit’s serial number. This can be changed by the user, a custom SSID must be at least 8
characters.
Title Bar
Color depend on the Master Lockit’s configuration as Satellite or Hub. This also determines available
features on the tab section. While Satellite is basically limited to configuring the nature and access of a
physical connected devices including metadata and remote control functions, a hub is the global
metadata and timecode master. Therefore it is very important only one Master Lockit is configured as
hub, which can be selected upper right. Toggling the mode takes 20 seconds indicated by a countdown
timer.
Left you see the generator’s timecode. In Satellite the generator must be externally jammed manually
or via ACN from a Hub or C-Jam master. Hub lets you edit the TC via the Timecode tab.
Below you can quickly identify the unit you are logged in by its SSID. You can change that in the
System drop down menu to the right.
Help
Clicking here will open this very file ;)
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Rev. 4.10
©2016, Ambient Recording GmbH 12
System
Gives you access to a drop down menu for maintenance.
Firmware Update
Important: Always make sure your unit is powered from a reliable external source. A brownout
may render your Master Lockit a service case.
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Select File (disregard the German babble in the screen) opens your local file browser or drag ‘n’ drop a
file through open explorer/finder. Navigate the update file, then click Upload & Restart. A 5 minute
countdown will initialize after successful upload after which you need to log back in to the WiFi. If the
page doesn’t refresh automatically, hit the reload button on your browser. If the firmware update
involves an update to the Lockit firmware (which will be the case mostly) the unit will automatically
power down after a while. Press and hold the config wheel until the LEDs rapidly flash alternating, then
release and let the Master Lockit boot through.
WiFi Settings
As mentioned you can change the name under which the Master Lockit will be shown when searching
for wireless networks on your accessing device. As per indication the SSID must be at least 8 characters
long due to the WPA protection in use. To apply changes a Reboot of the server is required. You can
trigger this from further below in the System menu and do not need to a full shutdown/boot process.
Note: The password always coincides with the SSID. Make sure you use a name that identifies the unit
uniquely without making you typing in cryptic essays in the morning.
System Reset
This will purge the database, reset the metadata server and restart in Satellite mode. This can be
indicated when the unit needs to be attached to a different camera or was in use before on a different
set. We recommend to do a reset at the start of a project especially when using the metadata network.
Note: This will also reset your WiFi to the default SSID
About
See detailed information of your system environment such as code revisions and the unit’s serial
number. Debug logging below is for diagnostic purposes only, leave disabled unless advised.
Reboot
You can restart the server section of the Master Lockit here. This may become necessary to aplly
changes made to the WiFi SSID otherwise it is a maintanence feature, very much like
Shutdown
Which will disengage the server platform.
Note: this will not power down the unit as such. The timecode section will still be alive and running. To
restart you will need to trigger a complete power off and then restart which both is achieved by to
depressing the navigation wheel on the device itself.
ACN-ML
Rev. 4.10
©2016, Ambient Recording GmbH 14
Tabs of the Web interface
Most tabs and or underlying functions rely on the unit being in Hub mode. Satellites purely serve as
metadata collectors/ transceivers and remotely jammed TC slaves. Hence options are restricted to
those features.
Timecode
This tab gives access to timecode relevant settings which, most of all, includes jamming the unit’s TC
generator manually or by the system clock of the device through which you are accessing the interface.
A successful jam will be indicated by a pulsing of the running TC in the upper left corner.
Now you can enable “Master” to send out C-Jam broadcasts and automatically sync up the set.
Note: Enabling “Master” mandatory requires the generator to be set, which is indicated by a
green flashing LED on the unit itself. This will help to erratically re-jam remote units after an
active C-Jam Master has accidentally run out of power and/or restarted. The unit will then start
in Slave mode. You can simply re-jam the generator by jamming it from any other device either
by cable or single “Jam” (see ACN MENU) and re-activate the C-Jam broadcast on that unit. Never
enable “Master” with units in active record.
Clicking on the pencil beside the userbits allows you to manually edit or automatically insert the date of
the accessing device into the first 3 slots while the last slot can be used to easily tick takes up.
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ACN Radar
Lockit devices in C-Jam mode on the same ACN channel in range will appear on this screen.
A green header indicates there is an active connection through ACN while a grey header indicates a unit
is offline.
Note: The hub will list all Lockits ever logged in. Remove any units that are not or no longer in
your active setup by clicking on the trash can.
Timecode frame rate must be consistent on all units on a set. Full Jam will automatically take care of
this on initial jam with the only exception being Lockits with enabled video sync. Still, you can easily
check these units and make changes accordingly. You may also rename the Lockits for clear
identification to ease battery monitoring.
If present units do not show up as expected, check “Master” is active and the ACN channel is identical
on hub and all other units.
Note: Setting the ACN channel on the web interface only affects the channel or this device.
Remote devices must be configured locally by hand.
ACN-ML
Rev. 4.10
©2016, Ambient Recording GmbH 16
Connected Devices
The Master Lockit can be configured to connect to a supported camera or recorder with metadata
interface. Select your device type from the drop down list and configure it. As of 4.10 the Master Lockit
supports ARRI Alexa via Ethernet, RED DSMCs via RCP, Sound Devices 788T via C-Link and Sound
Devices 6series via USB. Special cables are required for each unit and physical connection must be
established before the unit will show up active.
Note: The required last 4 digits of the serial number for ARRI ALEXA can be found on top of the
camera as well as within the system menu.
You may also rename the connected unit for better identification.
Note: This name does not synchronize with the manually designated names in the ACN Radar
tab. It is advised to use identical names here.
Beside local devices the “Connected Devices” tab of the hub also will list active metadata
communication channels from units attached to other Lockit devices on the ACN. LockitSCRIPT apps
logged into the hub’s WiFi will also be displayed.
When connected to a Sound Devices 788T or 6series audio recorder you can select a dedicated
“Remote Control” subpage which will offer extensive access for remote rec roll, take history metadata
editing, and sound report export.
Beside local devices the “Connected Devices” tab of the hub also will list active metadata
communication channels from units attached to other Lockit devices on the ACN. LockitSCRIPT apps
logged into the hub’s WiFi will also be displayed.
When connected to a Sound Devices 788T or 6series audio recorder you can select a dedicated
“Remote Control” subpage which will offer extensive access for remote rec roll, take history metadata
editing, and sound report export.
Note: The required last 4 digits of the serial number for ARRI ALEXA can be found on top of the
camera as well as within the system menu.
You may also rename the connected unit for better identification.
Note: This name does not synchronize with the manually designated names in the ACN Radar
tab. It is advised to use identical names here.
Beside local devices the “Connected Devices” tab of the hub also will list active metadata
communication channels from units attached to other Lockit devices on the ACN. LockitSCRIPT apps
logged into the hub’s WiFi will also be displayed.
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When connected to a Sound Devices 788T or 6series audio recorder you can select a dedicated
“Remote Control” subpage which will offer extensive access for remote rec roll, take history metadata
editing, and sound report export.
Beside local devices the “Connected Devices” tab of the hub also will list active metadata
communication channels from units attached to other Lockit devices on the ACN. LockitSCRIPT apps
logged into the hub’s WiFi will also be displayed.
When connected to a Sound Devices 788T or 6series audio recorder you can select a dedicated
“Remote Control” subpage which will offer extensive access for remote rec roll, take history metadata
editing, and sound report export.
See “Remote Control” chapter below for details.
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Rev. 4.10
©2016, Ambient Recording GmbH 18
Metadata Live View
This tab will show the clips as they get generated and collected to the active units in the network.
Comprehensive metadata information of can immediately be accessed by clicking on the according
area of each clip.
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Metadata Export
Here is where you manage the collected clip metadata from all devices in the Lockit Network. The
Master Lockit in hub mode will display all transmitted clip metadata from all data collecting Lockit
devices.
Note: When in “Satellite” mode, the Master Lockit only stores clip metadata from the device it is
physically connected to while simultaneously transmitting it to the “Hub” Master Lockit. To get an
overview of all the clips on set check the hub’s web interface.
The clip contains technical metadata – the amount and specific content is determined by the camera or
recorder type. When the LockitSCRIPT app is connected to the Master Lockit, this technical metadata is
supplemented by the content metadata of this script supervising app.
You are able to filter clips by device, TC or shooting day. Monitor them or export the information in one
of the provided export formats. Sound mixers can also create a dedicated sound report from here.
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Remote Control
This special subpage is especially catered to the requirements of a sound mixer, usually the person in
charge of sync and timecode supervision. When working with a supported recorder, this dedicated
interface gives remote control over record start/stop, track management and essential reporting needs
such as preliminary and retrospective scene/slate/take editing, circling or wasting a clip as well as
applying notes. At the same time, critical functions are available through the Timecode and ACN Radar
tabs, so it’s easy to focus on recording audio without losing track of battery status and proper
connection of all Lockit devices on the set. The last tab “Master Lockit Menu” takes you back to the
“Connected Devices” of the main interface.
Note: Options strictly depend on available features of the connected unit and may change with
firmware updates through the recorder’s manufacturer.
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Meters
Click on expand to display the track metering on 788T.
Tracks
Arm/disarm and rename tracks for upcoming take on 788T and 6series. When starting a recording the
tracks will become locked and show the order of tracks in the resulting file. E.g. if you disable track 5
track 6 will become 5th
in line.
Note: Sound Devices’ 6series recorders mandatory requires firmware 3.10 for full remote control.
Please visit the appropriate product page and update your recorder.
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Current and Upcoming Clip
You can edit metadata for the last recorded (“current”) and next (“upcoming”) take. If you edit the scene
of current, the upcoming information will automatically adapt. Also take count will automatically
increment unless you change the scene for upcoming.
History
During the Master Lockit is connected to recorder all takes created with will be logged and added to the
takes available for sound report. This “History” can be expanded below “Upcoming Clip”
Clicking on any file in the history will open the editing dialogue for this take. You can edit scene, take
and track names, circle it, and add notes.
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On connecting, the last 18 takes will be loaded into the history If you need to add more takes that had
been recorded before connection was established these can be imported by picking the desired
number of clips via the “Import more clip metadata…”
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©2016, Ambient Recording GmbH 24
Note: These files will be transferred straight into the “Metadata Export” section and not available for
metadata editing. Selecting a large number of files may lead to sluggish response of the connection
and recorder. Always use with care and enough time for all data to be processed.
At the end of shooting day you can move straight in to the export section through the “Export Sound
Report” link, this will take you out of the Remote Control micro site directly to the Metadata Export tab
of the main interface screen.
Note: If you (un)intentionally have left the Remote Control you will find your way back through
Connected Devices -> Remote Control
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Creating a Sound Report from the Master Lockit’s web interface
This will be processed through the “Metadata Export” tab of the main screen. Select your recorder
and narrow in by adding criteria such as shooting day, TC range etc. The selection of files being
exported dynamically adjusts below. When ready hit “Sound Report (Excel)”. The report front page wil
open for filing or edit if you have created one before.
For exporting the final report click “Generate Sound Report” to the lower right which will initialize a
file creation process indicated by a progress bar.
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The resulting .xlsx file will directly downloaded to your accessing device for immediate inspection,
correction, forwarding, or print out.
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9. Menu Description
The graphical interface of the Lockit Menu combines ease of use with maximum flexibility for
experienced users and mostly consistent through all devices. Consecutive, interactive menus ease fail
safe configuration, guiding the user step by step through initial configuration.
Each menu pane with submenus features a “Home” symbol which will be preselected, allowing the user
to quickly move up one level when pressing the wheel erratically or just checking the settings.
Complexity of adjustments is defined by a 2 step menu depth which can be set from the System setting
Menu. Additionally you can “Lock” the graphical interface here after setup has been completed. To
unlock, follow the prompt and hold the configuration wheel left for 3 sec until an according message
appears.
Note: Due to the power logic on ACN-TL, ACN-LS, and ACN-ML, this message will also pop up
when shutting down these units with the required long press to the configuration wheel. It is
however not necessary to unlock the menu to power down. Just keep the button pressed for 3
seconds and the unit will shut down as desired.
“Standard” view will show the settings that have proven practical for the majority of productions, so we
highly recommend leaving it sitting here unless you run in apparent limitations to your required
configuration. In the above example of ACL204, when selecting a video sync format the only applicable
TC frame rate will be preselected on the step-by-step configuration and only thing required is to
confirm. When starting with TC frame rate and then moving to Sync and choose Video the first
matching project rate will be suggested for each video format. However, as video is on a higher priority,
changes applied here will result in TC FPS being accordingly adjusted and the new frame rate will be
showed for confirmation.
Note: “Standard” will not allow for TC/video cross rates, each video format will only have 1
matching TC rate which will be preselected. Only exception are NTSC area rates 29.97 and 59.94
which will give you the option between 29.97 (non drop) and 29.97DF (drop frame).
Important: When using 29DF make sure the whole set does. NEVER run a setup with units mixed
on non drop and drop! 29DF will neither sync with 29.97, 30, or any other non drop rate.
“Extended” will grant access to the complete options and allow for the most complex configurations to
suffice even the most avid TC and Sync Supervisor.
E.g. this mode will unlock video and TC being “crossed”, so you can pick 24 fps TC along with video rates
of 25, 50, or 60 fps. However, you still cannot pick invalid settings such as PAL area TC rates along with
NTSC area video formats (23.98, 29.97, 47.95, 59.94) and vice versa. It will also unlock sync output for
3D rigs, more uncommon video and TC rates of 30 and 60 fps, PAL and NTSC SD sync. Additional
options include Audio and PPF sync options, and applying an Offset to the TC output for compensation
of frame processing delay. Clearly, these are options not required for most applications and there will
be hardly reason to unleash this level. “Extended” will disclose additional settings. Values available only
on this level will be marked (E) accordingly in the following description.
Note: Settings are persistent through a level change which allows you to start off with guided
default depth and tweak in “Extended” if required.
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The Lockit Slate menu has been enhanced with a guided Display menu which replaces the rigid presets
of the information displayed on clap on firmware 3.xx. With 4.xx, you can consecutively assign 0-20
seconds to Userbits, Clapped Timecode and the generator’s Running TC to be displayed for after the
late had been hit. Default will be set to ”UB:0s CT:10s TC:0s” which displays the clapped timecode value
and then blanks the LED display which exactly corresponds to the former default “Claptime” setting.
The menu description below will use these conventions:
Underlined: marks a (sub) menu, pressing the navigation wheel will open the next lower level, which
may contain submenus or parameters.
“Quoted Italic”: marks a parameter setting. This is the lowest level of a menu. Depending on the
available options these will be listed visible or can be scrolled (separated by “/” in the explanation
below). Active values will be highlighted. To change use the navigation wheel to select and press to
apply, to keep current settings just press. Both will automatically jump up one menu level with “Home”
selected. So, intentionally or accidentally, you will always quickly find your way back home.
Bold: marks the factory default setting of a parameter, the unit will load these values on performing a
Sys/Reset.
(E): Only available when “Extended” is selected in Sys/Menu.
Some menus, parameters, or settings will also be exclusive to different devices and marked accordingly
(1) ACL204 Lockit, (2) ACN-TL Tiny Lockit, (3) ACN-LS Lockit Slate, (4) ACN-ML MasterLockit
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Main Menu
↑ Mode TC Sync (1, E 2) / Slate (3) ACN Sys
Sync menu only available on ACL204 Lockit and ACN-TL Tiny Lockit (“Extended”), Slate Menu only on
ACN-LS Lockit Slate
To open the Main Menu press the 3-directional configuration wheel in home screen, navigate by
toggling left/right. Menus are rotational, so you can go from the first to the last setting by moving left.
Pressing the highlighted selection will open its submenu, pressing the arrow up/house symbol will take
you back again. When there is no further submenu the current active setting will be highlighted. If you
do not want to apply changes just press on the highlighted selection and you will fall back to main
menu without alterations.
Mode Menu
↑ int TC C-Jam TRX ext TC (E ) Reader (3)
Selecting the operation Mode will allow for one step configuration when initializing your Lockits for a
new project. Just pick your application and all necessary adjustments will be performed automatically
under the hood. Together with the “Full” Jam mode and auto frame rate setting there is hardly anything
left to do but choose your sync option on ACL204 if applicable and Jam sync your units via cable or ACN
after having put one unit into C-Jam Master mode. Each mode has a dedicated LED blink code of the
two colored LEDs above the OLED display, which will also show selected mode and active transmission
direction.
“Int TC”: “Classic” Lockit mode, the unit will run on its internal generator with standalone accuracy of
.1ppm, ACN disabled. MIDI timecode (MTC) will be put out over USB (ACL204 and ACN-LS) or Lemo ACN
(ACN-TL).
“C-Jam”: Default, as “Int TC” but with ACN enhancement. This is the recommended setting when
running any combination of ACN ready units. The devices can be jammed and TC framerate applied
over ACN, metadata transfer with a Master Lockit in Hub mode is activated. Additionally the units will
automatically adopt their pace to a “Master” unit for unprecedented zero drift accuracy and divergence
down to 10uS.
On powering up, Lockit devices will generally start up with unset generator and thus in idling slave
mode with a red flashing LED. Then jam one (and only one) deliberate unit to time of day and enable
“Master” in its ACN menu and you never need to worry about TC for the rest of the day as long as the
Master keeps power. This Master will be identified by a dedicated blink pattern and “M” will show up in
the lower right corner of the OLED. The other units will then jam their generators and framerate and
follow as “Slaves” indicated by “S” and an according blink code. The intelligent C-Jam algorithm will
automatically improve the accuracy and establish zero latency, zero drift lock between units within the
ACN.
With an active “Master” already in range “Slaves” will automatically re-jam after powering on or a battery
swap. As ACN broadcasts only happen every 6 seconds, it may take this long for a freshly booted “Slave”
to pull in. If “Slaves” lose connection to a previously present “Master” they will keep their loyalty for 30
seconds and then switch over to “(S)” which means you can move over “Master” to another unit.
Note: Always make sure just one unit is set to “Master”.
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“TRX”: ACN TC radio link. Unit will act as an auto-configuring transceiver. Without TC source the units
will idle slowly blinking red and wait for either physical TC injection or signal via ACN. On detection of
an external SMPTE LTC or MIDI TC source the device will transform into transmitter (indicated by “TX”
on OLED and according blink code) and send status and frame rate to other units (marked “RX”) which
will automatically follow the source. Source detection is fully automated, including bidirectional
MTC/LTC conversion. TC will be displayed on LED display of Lockit Slate, clapped time broadcasted as
metadata.
“Ext TC”: In this mode the device serves as a bidirectional LTC to MIDI TC convertor. TC will be displayed
on LED display of Lockit Slate. Useful in studio environments to sync TC between external equipment
and digital audio workstation where ACN is a not required feature.
“Reader”: Only available on Lockit Slate, this mode allows to visualize external LTC on the slate. No
MTC conversion, no output, no ACN, but the slate will follow TC playback in low or high speed and even
reversed which makes it the preferred mode for special effect shots.
Note: As these modes are not suited for proper synchronization selecting a sync output is not
available in “TRX”, “Ext TC” and “Reader”.
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TC Menu
↑ FPS Jam Output UB
FPS
FPS: 23.98/24/25/29.97/29.97 DF/30 (E)
Select timecode framerate, toggle and press. When changing an existing setting you will be asked to
confirm or discard the new selection. If video sync output is already enabled on ACL204 available
values may be limited or even locked depending on menu depth.
CAUTION! Switching between PAL and NTSC or Non-Drop and Drop rates will restart the
generator with the new time base and interrupt the video or audio sync signal, doing this while
recording will result in a corrupted file.
Jam
Full Auto Once Edit Off
Determines how the generator can be jammed over ACN, cable, or IR (only via ACC501 controller).
“Full”: Automatic setting, unit will jam if generator is not set or external TC is different from generator.
Also the unit will apply the external TC framerate via LTC or ACN to its generator with the exception
that video sync output has been enabled on ACL204
In that case the Jam mode will fall back to Auto (see next parameter). Still, jam mode will be kept active,
so if you disable video sync “Full” will be hot again. This will effectively prevent misadjustments during
operation while bringing maximum of ease on initial configuration.
“Auto”: Unit will jam if generator is not set or external TC is different from generator.
“Once”: Unit can be jammed once and then lock inputs (cursor moves to “Off”). Unlock again by
selecting desired jam mode.
“Off”: defeats jamming of the internal generator from external. Still, you can manually edit timecode as
per below.
Edit: Enter TC value manually hh:mm:ss:ff. Toggle to edit blinking value, press to confirm and proceed.
TC generator will start on from selected value after confirmation, so you can exactly trigger a certain TC
start. Editing TC does not change your jam mode in general. However, if edited manually and confirmed
generator will be set and hence “Full” will temporarily fall back to “Auto”.
Note: The active jam mode will be visualized upper left to the running TC on the main screen by
indicating “F” , “A”, “O” or a lock symbol for “Off”.
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Output
Level (2) Mute Offset (E)
This menu configures the TC output signal available on both Lemo sockets. If Level is not applicable
and Offset hidden while in “Standard” view, entering Output will directly access the Mute submenu as
only option.
Level
Select TC level: 0/-3/--6/-9/-12/-15/-18/-21/-24/-27/-30/-33/-36/-42 dB
Only available for ACN-TL Tiny Lockit
Adjusts TC level on Lemo B in -3dB steps from 0 to -36dB plus -42dB. Useful when recording TC on audio
tracks of DSLRs or non-TC capable recorders.
Mute
Mute on Gen Not Set: No/Yes
Disable the physical output of timecode in case the generator is not set (flashing red) in int TC and C-
Jam modes. This can be useful to leave the Lockit connected to your audio recorder with a bidirectional
cable and jam it to time of day from the recorder after start up and then seamlessly becoming the
timecode source. Also with no TC output most cameras will display a warning in the viewfinder monitor
which provides immediate visual troubleshooting.
Note: No TC is as good or bad as inconsistent TC, therefore there is no drawback to have the
output muted. Rather, it will give you better indication if setup is not complete/correct.
Offset
Offset: +/-00.00
Extended Setting
Shifts the TC output up to +/- 10 frames in .05 increments on both Lemos and LED display on ACN-LS
Lockit slate against the generator. This allows for compensation of frame processing delay on cameras
and TC offset to 3rd
party equipment (e.g. delayed TC out from audio track on playback).
UB
↑ Show (t) Jam Edit
Show
Toggles userbits to be displayed in main screen, will reduce the font size of TC.
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Jam
On Off
“On”: Userbits will be jammed on change. This will happen on TC Jam but also on every change without
the TC generator being interrupted. When C-Jam is enabled this can be used to increment scene/take
on the fly via ACN.
Note: Update will occur with up to 6 seconds delay on the next C-Jam broadcast.
“Off” Userbits will be locked. Use this mode to apply a fixed ID through userbits.
Edit
Allows manual changes to userbits on the fly, enter 8 UB digits with hex-code values 0-F. On changing
existing UB value a prompt will pop up to confirm or discard the new value. This will override the
current value but not change jam mode itself. So, for static ID set Jam to “Off”
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Sync Menu
↑ Video (1) Audio (E 1) PPF (E 1, 2) Off
Sync Menu and output only available on ACL204 and ACN-TL (Extended mode).
Video
480i(E)/576i(E)/720P/1080i/Psf/P 23/24/25/29/30 (E)/59/60(E) Single/Dual/3D(E)
Available only on ACL 204. Selectable frame rates depend on selected video format. (E) only in
Extended mode
Consecutive, interactive menu: “Genlock” video sync output on BNC. Select video line count first and
then choose from matching framerates. In Extended mode you will then be able to select single or dual
camera load (required for 3D rigs).
After setting video sync, the direct matching TC frame rate will be preselected and displayed for
confirmation. “Standard” menu depth only allows this native TC frame rate, if you require cross-sync
rates, valid selections are available in “Extended” view.
This logic effectively inhibits invalid area mixing such as integer TC rates with non-integer video rates
and vice versa.
Note: Genlock and TC output are hard locked against each other. If TC FPS has been set before
entering the sync options, the first matching video frame rate will be preselected. However, there
are multiple video formats applicable for each TC framerate but just one native TC frame rate to
each video format. So, if you need genlock out, it is advised to select the correct format first and
then just confirm the correctly preselected TC rate.
Audio
Wordclock/Black Audio 31968/…/48000*/…/192192
Only available on ACL204 and in Extended mode
Consecutive menu: Choose between “Wordclock” (50% duty cycle clock at SR) or “Black Audio” (AES3
carrier signal with no signal) and then pick sample rate from 32kHz through 192kHz incl. pull up/down
rates.
PPF
1/2/4x High/Low
Only available in Extended mode
Pulse Per Frame) is used to steer industrial cameras. Rarely used, hence Extended. Pick between 1, 2, or
4 pulses per frame with rising (“High”) or falling (“Low”) slope at frame start.
Off
This will reduce current draw, so if not required, disable sync output.
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Slate Menu
This menu is exclusive to the ACN-LS Lockit Slate
↑ Display LEDs Sensor
Display
Userbits: 0s...20s → Clapped TC: 0s…10s…20s → Running TC: 0s...20s/inf
Defines the slate displaying on clap. Successively apply 0 to 20 seconds for Userbits, Clapped TC and
Running generator TC. Selecting a time will automatically move on to the next parameter and the
selected value will display in the line above, led by the parameter indicator (“UB”, “CT”, “TC”).
LEDs
Flash LED: Clap/Clap+Seconds/Off
Configures the flash LEDs on front.
“Clap” will light up the 2 bright LEDs only when the slate is operated, allowing for clear identification of
the slated frame.
“Clap+Seconds” also flashes LEDs on every second transition.
“Off” defeats the flash LEDs.
Sensor
↑ Tilt Brightness
Adjusts Tilt and Brightness sensors
Tilt “On/Off” enabling will revert the 7 digit display when the slate is operated upside down for special
markers like end slate e.g.
Brightness, choose between “Man”, “Low”, “Medium” and “High”.
“Manual” lets you adjust the display brightness in 9 steps during operation by flicking the 3-function
wheel. Looking from the back, flicking left will de- and moving right increase brightness.
“Low” enables the environment light sensor with a dim setting usefull for late night shoots. Still, when
light falls on the slate it will increase brightness for better reading and dim down to not interfere with
the shoot.
“Med” is automatic dimming with maximum medium brightness.
“High” is applicable for outdoor shoots in bright light but still with a concern about battery life.
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ACN Menu
↑ Slave Jam Master Ant
Only visible in ACN enabled modes “C-Jam” and “TRX”. “Slave”, “Jam”, and “Master” options are only
available in C-Jam mode
ACN Modes
“C-Jam” is an enhanced multidirectional radio connection between ACN enabled units. Timecode is
continuously jammed via a master without compromising the autonomous accuracy of the Lockit
devices. Also, this mode serves for metadata networking when using a Master Lockit. For more detailed
information please refer to the dedicated ACN background chapter.
“TRX” transforms the unit into an ACN based TC radio link with a twist. Each device is in hybrid mode
and will automatically turn into a transmitter once LTC or MIDI TC is applied. The generator will then
jam sync, follow external timecode on its framerate and transmit timecode, framerate and source
status to the receiving units which again kick in their freewheeling generators to follow: No TC output
with no TC connected or stopped, “standing” TC (repeating frame at frame rate) with standing TC on TX
input and running TC with TC source running. This combines the transparent action of a “classic”
timecode radio link with the drop-out proof concept of a freewheeling generator and the intelligent,
adjustment-free ACN algorithm.
Note: To further ease configuration and to avoid interference when running both modes in one
environment, selecting “C-Jam” and “TRX” have dedicated default channels which will
automatically be applied on switching the mode. Factory defaults are 18 for “C-Jam” and 11 for
“TRX” but you can select custom values for both modes in the Ant menu which will be valid until
a factory reset is performed.
C-Jam Sync Modes
“Slave”: receive mode. This is the default and on power cycling it will fall back to this. If the unit once
had been jammed from a “Master” and initiated the dynamic C-Jam tune this will be indicated by “S” on
the main screen lower right. If that master is lost but C-Jam tune is still in operation “S” will alter to “(S)”.
Keep this mode for all units but the dedicated C-Jam master.
“Jam” fires off a One-Time Jam burst, used best when only setting the free running TC generator is
required. Quite similar to the classic jam using a cable, you will need to re-jam units after battery
change or power cycle. As this is a singular operation the unit will fall back to the “Slave” mode in idle.
“Master”: to enable this mode the generator needs to be set first (indicated by a green flashing LED).
The unit will resend timecode pulses every couple of seconds. “Slaves” will automatically rejam their
generator if not set and dynamically adjust their clock reference to best match the speed of the
“Master”. Thus, an accuracy window of 10us is achieved, reflecting synchronicity on video line level.
After replacing the batteries on either slave it will automatically jam to the set TC.
Note: Although each unit can serve as C-Jam master it is very important that just one is actually
designated as such and sending out broadcasts. All other units just set to C-Jam mode as slaves.
Changing from “Master” to any other mode will immediately stop C-Jam broadcasts from this
unit.
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Ant
Select C-Jam ACN channel:18
→ Select TRX ACN channel:11 →
LNA: Off/On →
Ant: Int/Ext (E1, E2)→
Power : 8 dBm
(E , PIN protected)
The Antenna Menu is also available under Sys/Config for configuration when no ACN mode is currently
selected.
Sequentially adjust the ACN RF settings. First, select individual default ACN channels for “C-Jam” and
“TRX” mode. Frequencies refer to channels 11 through 26 of the IEEE 802.15.4 LR-WPAN standard (see
Appendix for details). Afterwards enable the Low Noise Amplifier if required. This will improve the
reception with a slight impact on battery life. In “Extended” menu view on ACL204 and ACN-TL you can
persistently select between internal and external antenna and lastly increase the radiated power. Since
this may not be legal depending on your local regulations the last setting is PIN protected. Please
consult your dealer if in doubt.
Note: Fitting an external antenna will give you the most noticeable range boost of all tweaks and
comes at no cost of battery life. As such, more recent ACN devices such as ACN-LS and ACN-ML
do not offer internal antenna. If you plan on using the ACN intensively, retrofitting an external
SMA antenna to Lockit and Tiny Lockit is highly recommended.
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SYS Menu
↑ Menu Config Reset Info
Menu
Lock/Standard/Extended
Defines the level depth and sophistication of available options.
“Lock” prevents unwanted alterations to the settings. It is recommended to lock the unit after
configuration. To unlock you will be prompted to hold the configuration wheel left for 3 seconds after
which a unlock message will appear.
Note: Due to the power logic on ACN-TL, ACN-LS, and ACN-ML, this message will also pop up
when shutting down these units with the required long press to the configuration wheel. It is
however not necessary to unlock the menu to power down. Just keep the button pressed for 3
seconds and the unit will shut down as desired.
“Standard” will only show valid settings that have proven practical for the majority of productions, so
we highly recommend leaving it sitting here unless you run in apparent limitations to your required
configuration. In the above example of ACL204, when selecting a video sync format the only applicable
TC frame rate will be preselected on the step-by-step configuration and only thing required is to
confirm. When starting with TC frame rate and then moving to Sync and choose Video the first
matching project rate will be suggested for each video format. However, as video is on a higher priority,
changes applied here will result in TC FPS being accordingly adjusted and the new frame rate will be
showed for confirmation.
Note: “Standard” will not allow for TC/video cross rates, each video format will only have 1
matching TC rate which will be preselected. Only exception are NTSC area rates 29.97 and 59.94
which will give you the option between 29.97 (non drop) and 29.97DF (drop frame).
Important: When using 29DF make sure the whole set does. NEVER run a setup with units mixed
on non drop and drop! 29DF will neither sync with 29.97, 30, or any other non drop rate.
“Extended” gives you all available configuration options and reflects the complexity of previous
firmware. This mode will unlock video and TC being “crossed”. E.g. you can pick 24 fps TC along with
video rates of 25, 50, or 60 fps. This will also unlock sync output for 3D rigs, more uncommon video and
TC rates of 30 and 60 fps, PAL and NTSC SD sync. Additional options include Audio and PPF sync
options, apply an Offset to the TC output for compensation of frame processing delay.
Config
Display Ant USB (1, 3) / LemoACN (2) Bat (1, 2, 3) IR (E )
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Display
Brightness: 1…3*…10 → AutoOff:5sec…30sec*... never
Consecutively adjusts the OLED in brightness and timeout.
Ant
Select C-Jam ACN channel: 18 →
Select TRX ACN channel: 11
→ LNA: Off/On →
Ant: Int/Ext (E1, E2)→
Power (E , PIN protected)
The consecutive antenna sub menu is restricted to Extended menu and offers sequential tweaks to the
ACN radio.
“LNA: Off/On” enables/defeats the Low Noise Amplifier. This may improve receiving range on the
sacrifice of battery life time, default is “Off”.
“Select ACN Antenna: Int/Ext” this option switches between built-in and the optional available SMA
antenna for increased range (available on Tiny Lockit and Lockit ACL204 in Extended menu only, ACN-
LS and Master Lockit do not have internal antenna).
Note: To accommodate for retrofitting of external antenna this choice will be permanently stored
and be maintained through a factory default restore. Only enable with genuine manufacturer
part firmly attached to unit.
“Select ACN tx power: 8dBm” restricted to Extended mode and additionally PIN protected. As per
default the ACN is set to the globally maximum allowed ERP level for LR-WPAN of +8dBm. Consult your
supplier only if your application legitimizes higher settings up to 18dBm. Increasing output power will
strongly affect battery life time, so even if applicable use with good consideration.
USB / LemoACN
MTC COM
Not available on ACN-ML Master Lockit
Sets the data port mode this is a dedicated USB port on ACL204 and ACN-LS (hence labelled “USB”) and
available on pins 3 & 4 on the Lemo “ACN” connector on ACN-TL, see pin out appendix for reference.
ACN-ML Master Lockit has no USB option for ACN and does not show this menu.
“MTC” puts USB into MIDI mode. Connected to a computer the device will be mounted as a standard
USB audio/MIDI device and recognized by supporting software. No drivers or configuration required on
both, PC or MAC.
“COM” sets the data port to USB serial. This is usually only necessary for updating.
Note: Although the setting is mode dependent and default to “COM” on “C-Jam” and “int TC” for
easy firmware update, you can enable “MTC” in these mode to make the device a MIDI TC
generator. If you want to convert LTC to MTC and vice versa, just select modes “TRX” or “Ext TC”.
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Bat
Li Alk NiMH
Not available on ACN-ML MasterLockit
This menu lets you tweak the battery telemetry read out to the cell type in use. Pick from Lithium,
Alkaline primary cells, and NiMH rechargeables. Readout follows typical discharge curve and accuracy
may vary over different manufacturers and battery types, so take with grain of salt.
IR
Off On
Enables the infrared port above the OLED. Only useful in combination with ACC501 controller.
However, leaving the IR port open increases interference sensitivity and compromise reliability of the
unit in normal operation, so it is off by default and can only be enabled through “Extended” mode.
Reset
Factory Defaults: Yes No*
Resets the devices to factory defaults as marked bold in this description
Info
DEV info Debug1 Debug2 Screen test
First screen will show critical device information for serial number, firmware and FPGA software
revision, and MAC address, followed by 3 debug screens for developer use only.
10. LED Blink Codes
Code Legend
● flash (generator sync)
●● double flash (low batt warning every 2 seconds)
● ● double blink (active ACN transmission)
●-● blink (generator free lock)
●--● long blink (ACN reception)
Red: Generator Not Set, no ext TC present
Green: Generator Set, running ext/ACN TC detected
Red & green simultaneously: standing ext/ACN TC detected
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Mode/Seconds 1 2
IntTC/C-Jam
Gen Not Set Mute ●
Gen Not Set Mute, lo Bat ●●
Generator Not Set ● ●
Generator Not Set, loBat ●●
Generator Set ● ●
Generator Set, loBat ●●
Additionally active C-Jam shows the following codes every 6 sec:
C-Jam Master ● ●
C-Jam Slave, Master present ●--●
C-Jam Slave, Master lost ●--●
TRX
no TC ●-● ●-● no TC, loBat ●-● ●● TX (ext. LTC/MTC detected)
TC running ● ● ●
TC running, lo Bat ● ● ●●
TC standing ● ● ● ●
● ●
TC standing, loBat ● ● ● ●
●● ●●
RX (TC over ACN detected)
TC running ●-● ●
TC running, loBat ●-● ●●
TC standing ●-● ●-●
● ●
TC standing, loBat ●-● ●-●
●● ●●
Reader (Ext TC) no TC ●-● ●-●
no TC, loBat ●-● ●● TC running ●--------- ---------● TC running, loBat ●--------- --●●●●-- TC standing (Ext TC) ●---------
●-● ---------● ●-●
TC standing Lo Bat (Ext TC) ●--------- ●---------
--●●●●-- --●●●●--
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11. Application Notes
Basics of TC, Sync, ACN and their use cases
Please also watch our video tutorials online: www.ambient.de/en/university
and join the Lockit Timecode User Group: https://www.facebook.com/groups/lockitusersgroup/
Timecode & Sync
One of the most common misconceptions is that timecode is sync and this is simply not true. It is just
one of 2 but both still essential components of synchronization.
“Synchronous” means same time. Now, while timecode is a required information to jam sync several
units together and hence make them synchronous, it will not take care to keep them synchronous over
a longer time as it will not synchronize the internal clocks. This is usually done via a blank SD or HD
video signal, commonly referenced to as genlock. This is why (except for the ARRI Alexa) cameras do
have dedicated inputs for timecode and sync and to achieve proper sync setup one should connect
both signals. The ACL 204 Lockit provides both and contrary to other existing solutions timecode and
sync are always hard locked against each other making it an integral part of the camera.
Choosing the correct video sync format and TC frame rate
Camera market is moving fast and the latest technology of today may be obsolete by tomorrow. Also,
manufacturers frequently update the firmware on their products, so it is nearly impossible to give a
comprehensive and bullet prove advice which setting is 100% correct for a specific production.
As a rule of thumb, it’s always useful to refer to the project frame base. Terms like system rate
may also apply. This is not only the frame rate the camera is internally working at but also post
production and editing will be performed at. It is important that this project rate should not be
confused with the sensor speed/frame rate. Also, e.g. in case of Panasonic, the camera may run at
29.97 system frame rate but still record 23.976 – again, it is the system rate that matters and video sync
and TC should be set accordingly.
TC should always follow the video frame rate. There are very few cases that you really would need
to cross sync a video to a differing TC rate (e.g. apply 30 or 25 fps TC to 24fps video sync).
What lead to some confusion is the fact, that there are no TC framerates higher than 30 fps. This lies in
the specification by the SMPTE. As a result when shooting with “double rates” such as 1080i or P at 48,
50 or 59.94 the correct timecode frame rate will be the according single rate of 24, 25, or 29.97(DF).
To simplify the complex setup the Lockit will preselect the first logical corresponding setting when
making adjustments to either TC or video sync. As one particular video format has exactly one
matching timecode frame rate, but a TC rate may work with multiple video formats it is recommended
to first set the video sync. The correct TC value will automatically be enabled and presented for
confirmation. The only choice you will have in Standard mode is to pick from Non Drop vs. Drop (DF)
when shooting with a TC rate of 29.97.
Note: Do NEVER mix and match DROP with NON DROP or NTSC area with PAL area rates!
To even further ease the setup process we have condensed the following guideline for the most
common camera types. Again, this list does not result in claim or liability to be complete or generality,
so if in doubt, please always refer to the specific camera’s manual. If you find inconsistencies or can
provide additional information, we would welcome your input to further improve this list.
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ARRI Alexa: being the one and only camera on the market that can actually sync its internal clock to TC,
it doesn’t have or require options for external sync. To sync it, set TC to “external regenerate”, attach TC
with project frame rate and leave it permanently attached.
ARRI Amira: use project video format.
Canon: the manuals for EOS cinematic cameras are unfortunately quite sparse about external sync, but
“When a reference sync signal (analog blackburst or tri-level signal) is input through the GENLOCK terminal,
the phases of the camera’s V and H sync will automatically be synchronized to it.“ hint that using the exact
project settings should work. Also, it seems 1080p sync is accepted for shooting in 720p. XF legacy
cameras or mode will require 59.97i/60i when shooting at 23.98/24.
Panasonic: 1080i @ double or single project (system) frame base for 1080P & PsF, follow project
(system) format for 720P or SD.
RED One: set the sync format according to the project frame rate
RED DSMC: always 1080P @ project frame base (23.976/24 on HFR rates), set HDSDI out to auto except
when shooting 47.5/48 HFR select 23.976/24.
Sony: 1080i or PsF @ project frame base, as 1080i double completely corresponds to 1080PsF single
rates you may stick with either (e.g. 1080i 50 for 25 or 50fps, 1080i 29.97 for 29.97 and 59.94 fps).
Note: Sony won’t operate at 24 but 23.98, so always use 1080i 47.95 on cinematic productions.
Panasonic: 1080i or PsF @ project (system) frame base for 1080P & PsF, follow video format for 720P
or SD.
ACN
ACN is a proprietary wireless protocol, specifically engineered for highest reliability, data integrity, and
range. It operates on 2.4GHz using channels 11-26 of the IEEE 802.15.4 LR-WPAN standard.
Aside time code and sync, ACN is the key feature of the current Ambient Lockit range. Building up on
the unrivalled tunable oscillator it can be used to enhance the accuracy from better than frame
accurate down to video line level grade.
All that is needed is an arbitrary number of Lockit devices set to C-Jam mode and one of them
configured to be the C-Jam master. The C-Jam master will then send out broadcast pulses which the
slaves will respond to and in case they detect a discrepancy automatically correct their pace. This will,
however, in no way sacrifice the unparalleled, self-contained accuracy. In case the radio cuts out, all
units will continue to operate as used to.
Note: Only ONE C-Jam master is allowed! Make sure no other unit is set to send sync broadcasts.
Also the ACN can be used to set up a metadata network on the set to collect, con- and distribute
metadata between different units and departments. At the core will be one Master Lockit which is
acting as server and can be used to monitor and control all other ACN enabled devices remotely via a
web interface that is accessible from any modern unit with internet browser.
A second mode, TRX, will allow the units to operate as an enhanced TC radio link. Again, this is not your
ordinary timecode over wireless but instead the transmitter will jam a free running generator in the
receiver(s) to incoming TC with auto frame setting and then send information whether the source is
running, stopping with standing TC or has stopped altogether. The receiving unit will then duplicate the
TC source’s status as it would directly be connected without danger of drop outs compromising the
desired functionality.
On top, this not only works with “classic” SMPTE TC but also MIDI timecode (MTC) with the Lockit device
connected to MAC or PC via USB acting as a USB MIDI interface.
ACN-ML
Rev. 4.10
©2016, Ambient Recording GmbH 44
As all current products including the Lockit Slate come equipped with ACN transceiver any device can
serve as transmitter or receiver. This dramatically cuts down costs for additional equipment at a
maximum of flexibility.
12. Physical Specifications
Dimensions: (L / W / H): 91 x 64.5 x 33 mm
(overall length with WiFi and SMA antenna detached: 102.5mm)
Weight: 275g
13. ACN Radio
Specification including channel assignment follows IEEE 802.15.4 LR-WPAN Standard on 2.4GHz band.
Equivalent ARRI remote focus equivalents listed to help avoiding interferences.
ACN ARRI EMIP WRS
Channel Center Frequency [MHz] Channel
11 2405
12 2410 0
13 2415 1
14 2420
15 2425
16 2430 2
17 2435 3
18 2440
19 2445
20 2450 4
21 2455 5
22 2460
23 2465
24 2470 6
25 2475 7
26 2480
Antenna socket SMA-F, leave supplied antenna attached. In case of lost only substitute with original
genuine manufacturer replacements parts ANT-2.4-SMA-M (straight) and ANT-2.4-SMA-M90 (angled).
ACN-ML experience quality.
Rev. 4.10
www.ambient.de/en 45
14. Timecode, Metadata, and Power Supply Cables
ACN-RCP
Meta data interface cable for RED cameras for
connecting Lockit Synchronizer to Red Epic camera via
RCP protocol, 5-pin Lemo to 4-pin Lemo, 0.4 m
MLC-CL
Metadata, remote control, and TC connection
to Sound Devices788T
MLC-HID
Metadata and remote control connection
to Sound Devices 6-series, USB A/A adaptor and A/B
Cable required when used directly on recorder,
connects straight through CL-12
MLC-L1B10
Ethernet cable Master Lockit to ARRI ALEXA
RJ45 to Lemo Series 1B 10-pin, 0.5 m
ACN-ML
Rev. 4.10
©2016, Ambient Recording GmbH 46
MLC-L1B10P
Ethernet cable Master Lockit
to ARRI ALEXA and powering
RJ45 to Lemo Series 1B 10-pin, 0.5 m,
with breakout to Hirose 4-pin for
powering
AK-HS4
DC supply through Hirose 4-pin
AK-HS4-LOB2
DC supply through Lemo 2 pin on ARRI Alexa
AK-HS4-PC2M
DC supply through Anton Bauer D-Tap male
LTC-OUT
Timecode out to BNC
ACN-ML experience quality.
Rev. 4.10
www.ambient.de/en 47
LTC-OUT/ Epic
Timecode out to Lemo 4-pin
to Sync socket on RED DSMC Sync socket
TC-I/O
Timecode out to Lemo 5-pin,
e.g TC to Sound Devices 6 series and ARRI Alexa
LTC-OUT35/35F
Timecode out to TRS-3.5 mm 90 right angle & jack
For feeding timecode to DSLRs, microphone loop
through to left channel, TZC right channel, 20dB pad
ACN-ML
Rev. 4.10
©2016, Ambient Recording GmbH 48
15. Warranty
Ambient Recording GmbH warrants the Master Lockit ACN-ML against defects in materials and
workmanship for a period of ONE (1) year from date of original retail purchase. This is a non-
transferable warranty that extends only to the original purchaser. Ambient Recording GmbH will repair
or replace the product at its discretion at no charge. Warranty claims due to severe service conditions
will be addressed on an individual basis. THE WARRANTY AND REMEDIES SET FORTH ABOVE ARE
EXCLUSIVE. AMBIENT RECORDING GMBH DISCLAIMS ALL OTHER WARRANTIES, EXPRESS OR IMPLIED,
INCLUDING WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. AMBIENT
RECORDING GMBH IS NOT RESPONSIBLE FOR SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
ARISING FROM ANY BREACH OF WARRANTY OR UNDER ANY OTHER LEGAL THEORY. Because some
jurisdictions do not permit the exclusion or limitations set forth above, they may not apply in all cases.
For all service, including warranty repair, please send the ACN-ML, along with proof of purchase date to
your retailer, or, if not applicable, to:
Ambient Recording GmbH
Schleissheimer Str. 181 C
DE – 80797 Muenchen, Germany
Please obtain a return authorization through the contact form on our website before sending in a unit.
16. Approvals
CE Conformity Statement:
Declaration of Conformity
According to ISO/IEC Guide 22
Manufacturer’s Name: Ambient Recording GmbH
Manufacturer’s Address: Schleissheimer Str. 181 C, DE – 80797 Muenchen, Germany
declares that the product: ACN-ML Master Lockit
is in conformity with:
- EN 60950-1:2006 + A11:2009+A1:2010+A12:2011+AC:2011
- EN 300 440-1 V1.6.1
- EN 300 440-2 V1.4.10
- EN 301 489-1 V1.9.2
- EN 301 489-3 V1.4.10
which is indicated and affirmed by the applied CE marking.
ACN-ML experience quality.
Rev. 4.10
www.ambient.de/en 49
FCC Statement
The FCC requires that the following statements be included in this manual for ACN-ML:
FCC § 15.19
This device complies with Part 15 of the FCC rules. Operation is subject to the following two conditions:
(1) This device may not cause harmful interference, and (2) this device must accept any interference
received, including interference that may cause undesired operation.
Canada CNR-Gen Section 7.1.3
This device complies with Industry Canada licence-exempt RSS standard(s). Operation is subject to the
following two conditions:(1) this device may not cause interference, and (2) this device must accept any
interference, including interference that may cause undesired operation of the device.
Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts
de licence. L'exploitation est autorisée aux deux conditions suivantes : (1) l'appareil ne doit pas
produire de brouillage, et (2) l'utilisateur de l'appareil doit accepter tout brouillage radioélectrique subi,
même si le brouillage est susceptible d'en compromettre le fonctionnement.
FCC § 15.21
Any changes or modifications not expressly approved by the party responsible for compliance could
void the user’s authority to operate the equipment.
FCC § 15.105
Note: This equipment has been tested and found to comply with the limits for a Class B digital device,
pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection
against harmful interference in a residential installation. This equipment generates, uses and can
radiate radio frequency energy and, if not installed and used in accordance with the instructions, may
cause harmful interference to radio communications. However, there is no guarantee that interference
will not occur in a particular installation. If this equipment does cause harmful interference to radio or
television reception, which can be determined by turning the equipment off and on, the user is
encouraged to try to correct the interference by one or more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver
is connected.
• Consult the dealer or an experienced radio/TV technician for help.
ICES-003
This Class B digital apparatus complies with Canadian ICES-003.
Cet appareil numérique de la classe B est conforme à la norme NMB-003 du Canada.
March 2015
Updated May 2015, Ambient Recording GmbH, Sebastian Fell
Updated January 2016, Ambient Recording GmbH, Klaus Grosser
Updated July 2016, Ambient Recording GmbH, Klaus Grosser
experience quality.
Ambient Recording GmbH Schleissheimer Straße 181 C | DE – 80797 Munich | vox +49 89 360 55 10-0 | fax +49 89 651 85 58
www.ambient.de | [email protected] © 2016, Ambient Recording GmbH
MADE IN GERMANY