network-electronics.com

Analogue audio embedder

Rev. 2

Flashlink User Manual

AAV-MUX

AAV-MUX Rev. 2

Network Electronics ASA

Thorøya P.O. Box 1020

N-3204 Sandefjord, Norway

Phone: +47 33 48 99 99 Fax: +47 33 48 99 98

Email: support@network-electronics.com www.network-electronics.com

Support Phone: +47 90 60 99 99

Revision history Current revision of this document is the uppermost in the table below.

Rev. Repl. Date Sign Change description

2 1 2007-10-15 AS Added Materials Declaration and EFUP; updated EC Declaration of Conformity.

1 0 2006-02-06 Updated CWDM laser options. 0 - 2005-06-01 GPI spesifications, GPI pinning, layout.

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AAV-MUX Rev. 1Index

1 INTRODUCTION...........................................................................................4

2 SPECIFICATION.............................................................................................5

2.1 Measurement conditions........................................................................5

2.2 General....................................................................................................5

2.3 Inputs.......................................................................................................52.3.1 Video Input:..........................................................................................52.3.2 Audio Inputs:........................................................................................5

2.4 Outputs....................................................................................................62.4.1 SDI Output ..........................................................................................62.4.2 Optical Output.....................................................................................62.4.3 GPI.......................................................................................................7

3 DETAILED DESCRIPTION..............................................................................7

4 CONFIGURATION.........................................................................................7

4.1 DIP switches............................................................................................84.1.1 Input gain.............................................................................................84.1.2 Group selection....................................................................................84.1.3 20/24...................................................................................................84.1.4 no EDH.................................................................................................84.1.5 Monitoring the status with Gyda..........................................................9

5 LIMITATIONS................................................................................................9

6 CONNECTOR MODULES............................................................................10

6.1 AV-MUX-C1...........................................................................................10

6.2 GPI Control Connections......................................................................11

7 MODULE STATUS.......................................................................................11

7.1 LED Overview........................................................................................12

8 LASER SAFETY PRECAUTIONS....................................................................13

9 DECLARATION OF CONFORMITY WITH CE..............................................14

10 ENVIRONMENTAL REQUIREMENTS FOR NETWORK FLASHLINK®EQUIPMENT....................................................................................................14

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AAV-MUX Rev. 1

1 Introduction

The AAV-MUX card is a four audio channel, analogue audio embedder card forserial digital video. It is one of the Flashlink® series of modules, providing acompact and cost effective solution for the transport of digital video and audioover single and multi mode optical fibre.

The card has a serial digital video input and a serial digital video output. Thereis an optional optical output with a choice of lasers. The CWDM and the1550nm lasers and have output powers of 0 dBm while the 1310nm laser hasan output power of -7.5dBm. This corresponds to the Flashlink® range of SDI-EO, electrical to optical converter cards.

Figure 1 AAV-MUX Block diagram

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Serialiser EDH processor

EmbedderSDI

Audio1L

Audio1R

Audio2L

Audio2R

Laser

SDI

AAV-MUX Rev. 1

2 Specification

2.1 Measurement conditionsSampling rate 48 kHz

Ambient temperature 25ºC

Measurement bandwidth 20 Hz-20 kHz

Detector RMS

Input overload level (0dBFS) +18 dBu

2.2 GeneralPower: +5V DC 0.51A 2.6W, +15V DC 0.063A

0.95W

Control: DIP switches, Gyda system controller.

Monitoring: Front panel LEDs and Gyda system controller.

EDH processing: Full. Received flags are updated, new CRCsare calculated.

Embedding level SMPTE S272M C Synchronous audio at 48 kHz and extended data packets (24 bit optional).

Embedded audio word length: Configurable 20 or 24 bits.

Audio delay 0.79 ms

Video delay 2.3 µs

2.3 Inputs

2.3.1 Video Input:Video Data rate: 270Mbps

Video frame rate: 50 Hz or 60 Hz.

Equalisation: Automatic up to 35dB

Impedance: 75Ω

Return loss: >15dB @270MHz

Signal level: nominal. 800mV

Connector: BNC

2.3.2 Audio Inputs:Number of analogue inputs: 4

Audio sampling frequency: 48 kHz

Differential Impedance: 25kΩ electronically balanced.

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AAV-MUX Rev. 1Connector: 25 pin D-sub.

Maximum signal level: Configurable +12dBu to +24dBu (=0dBFS)

Common mode voltage tolerance ±50 V

Frequency response 20 Hz – 20 kHz •0.1 dB

Passband ripple ±0.035 dB

Stop band attenuation 95 dB

Dynamic range1 Min. 101 dB(A) (0 dBFS = +12 dBu)

Typ. 107 dB(A)

THD+N @ -1 dB FS Max. -85 dB

Typ. < -95 dB

Intermodulation distortion2 @ - 12 dB FSMax. -90 dB

Crosstalk Typ. -95 dB

Max. -90 dB

CMRR (20 Hz – 500 Hz) Typ.> 60 dB

(500 Hz – 20 kHz) Typ.> 80 dB

2.4 Outputs

2.4.1 SDI OutputNumber of SDI outputs: 1

Connector: BNC

Impedance: 75 ohm

Return loss: > 15dB @270MHz

Signal level: nominal. 800mV.

Rise/fall time: typically 650ps.

2.4.2 Optical OutputTransmission circuit fibre: Single Mode

Light source: F-P/DFB Laser

Optical wavelength (13T): 1310nm ±40nm

Optical power: -7.5 dBm

Optical power (option): 0 dBm

Optical wavelength (15T): 1550nm ±40nm

Optical power: 0 dBm

1 |(THD+N of –60 dB FS signal)| + 60 2 SMPTE 4:1 60 Hz + 7 kHz

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AAV-MUX Rev. 1Optical wavelength (C1nn0): 1270, 1290, 1310, 1330, 1350, 1370, 1390,

1410, 1470, 1490, 1510, 1530, 1550, 1570,

1590 or 1610nm ±6nm as per ITU-T G.694.2

Optical power: 0 dBm

Jitter (UI=unit interval): Max. 0.135 UI

Return loss: Typ. > 40 dB

Maximum reflected power: 4%

Connector: SC/UPC

2.4.3 GPIGPI Output: Power good, SDI unlock, Embed error,

Audio overload1, Audio overload2.

GPI Connector: RJ45

Signal type: Open collector transistor.

Maximum voltage: 50 V

Maximum current: 400 mA if only one output driven, 100 mA alloutputs driven.

3 Detailed Description

The digital video passes through the receiver and the EDH information isprocessed in the de-serialiser. It then is passed to the embedding processor .The video signal is then re-serialised and sent to the electrical and opticaloutputs.

The analogue audio inputs go to electronically balanced inputs which reducethe input level by 12dB. The next stages change the level according to theconfigured gain setting and send the resulting signals to the input of the A/Dconverters.

4 Configuration

270 Mbit digital video may have up to four audio groups which are numbered1 to 4. Each audio group has four mono audio channels or two stereo audiosignals. The AAV-MUX works with a single audio group. Digital VTRs usuallyembed audio in group 1. Embedding on audio group 1 with the AAV-MUXshould be used if the original audio is absent, or is to be replaced. Use anothergroup number if extra audio is to be embedded.

NOTE! The AAV-MUX removes all existing audio when embedding on group 1.Embedding on other audio groups appends (adds) the new group to theexisting embedded audio.

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AAV-MUX Rev. 1

4.1 DIP switchesThe configuration of the card sets a number of parameters: -

• The input gain for the A/D converters.

• The audio group number to be embedded.

• Whether to embed the audio with 20 or 24 bits.

• Whether the output SDI should contain EDH information.

4.1.1 Input gainThe A/D converter has a defined overload level which can be configured withthe gain switches.

The card has two eight-way miniature DIP switches located near the front of thecard. Groups of 3 switches control the input gain of the analogue inputs.Switches marked 1L and 1R control the levels for converter 1 while switchesmarked 2L and 2R control the levels for converter 2. The settings for the levelswitches are presented in the following table. The table is also printed on theAAV-MUX card.

0 corresponds to off. 1 corresponds to on.

The three numbers in the top row should be read as: S2,S1,S0.Switches 000 001 010 011 100 101 110 111dBu @ 0 dBFS 23,9 22,8 21,3 20 19,6 18 15 12

Example: S1 off, S0 on and S2 on gives a maximum input level of +18 dBu.

4.1.2 Group selectionThis DIP switch may be used to assign the group number to the embedderprocessor. The group number is then set by the combination of the two groupswitches, as shown in the following table. The table is also printed on the AAV-MUX card

Group Switch G1 Switch G01 0 02 0 13 1 04 1 1

4.1.3 20/24This switch is used to select the embedded audio word length. Embeddedaudio is encoded as 20 bits + 4 bits. This switch switches off the encoding ofthe last four bits. Some older video equipment cannot tolerate the extra 4 bits.

4.1.4 no EDHThis switch controls whether the EDH packet is embedded or not. Some oldervideo equipment cannot tolerate the presence of the EDH packet. The card willremove an existing EDH packet only if audio group 1 is selected, as the cardcompletely erases all ancillary data before embedding in this mode. The cardhas no way to remove EDH packets if a group other than 1 is selected but it willnot insert new packets if the switch is on. For example, if group 2 is selected,'no EDH' switch is on and the incoming video contains an EDH packet, the

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AAV-MUX Rev. 1output video will contain a valid, updated EDH packet. If the input video doesnot contain an EDH packet then the output video will also not contain an EDHpacket.

Figure 2 Configured for +18 dBu overload level, embedding on group 1, 24 bit audio with EDH.

4.1.5 Monitoring the status with GydaThe Gyda controller card receives information about the configuration and theoperating status of the card. The displayed information includes: -

• Slot label• Power voltages• Video signal margin• Video format• Audio group• Audio 24 bit configuration• Laser status (if applicable)• EDH flags• EDH processing status• Alarm status• Firmware version (on configuration page)

Gyda can be also used to switch the laser on or off if the fibre requiresattention.

The control buttons only appear on the page when they are relevant.

5 Limitations

If the AAV-MUX is used to embed in audio group 1, all existing packets will be

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AAV-MUX Rev. 1removed.

The embedding processor does not read the any existing audio and begins toembed audio as soon as it finds any vacant space. It will embed an audio group2 even if there is already one already present in the video. The result will be notbe de-embedded correctly.

Removed audio groups when de-embedding will leave 'holes' in the embeddedaudio and the AAV-MUX will start embedding as soon as any of these holes areencountered. This may result in the corruption of other audio groups which arestill present after the 'holes'. This does not apply if Network embeddingproducts were used to embed audio as they all use the same packetdistribution.

6 Connector modules

The AAV-MUX card may be used with both the AV-MUX-C1 and the AAV-DMUX-C1. The two backplanes have the same external connections so only theAV-MUX-C1 is described here.

6.1 AV-MUX-C1

Figure 3 AV-MUX-C1 Connector module.

The AV-MUX-C1 connector card has a D-sub 25 pin connector with UNCthreads for the audio signals. The pin configuration is similar to the TASCAMDA-88 connector . The configuration is shown in the figure below. The video

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AAV-MUX Rev. 1input and output connectors are BNCs. The RJ45 connector is used for alarms.

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AAV-MUX Rev. 1

Figure 4 Audio connector configuration.

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gndgnd

coldhot

gndcold

hotgnd

coldhot

gndcold

hot

inputs1R1L

2L2R

AAV-MUX Rev. 1

6.2 GPI Control Connections

Pin Function

1 Card has correct power.

2 The card has not locked to any input SDI

3 An error has occurred in the de-embedding process

6 Audio 1L or 1R is overloading the A/D converter

7 Audio 2L or 2R is overloading the A/D converter

8 0 volt pin

7 Module Status

The status of the module can be easily monitored visually by the LED’s at thefront of the module. The LED’s are visible through the front panel as shown inthe figure below.

Figure 5 LED overview of AAV-MUX

(Text not printed on the front panel).The AAV-MUX has 4 LED’s. The colours ofeach of the LED’s have different meanings as shown in the table below.

7.1 LED OverviewDiode \ state Red LED Orange LED Green LED No lightCard status PTC fuse has been

triggered - remove themodule.

Module has notbeenprogrammed

Module power isOK

Module has nopower

Video status Video signal absent. n/a SDI inputPresent

Audio1 clip Audio overload n/a No overloadAudio2 clip Audio overload n/a No overload

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Card status

Video status

Audio1 clip

AAV-MUX

Audio2 clip

AAV-MUX Rev. 1

8 Laser safety precautions

Guidelines to limit hazards from laser exposure.

The AV-MUX units in the flashlink® range have a laser option.

Therefore this note on laser safety should be read thoroughly.

The lasers emit light at wavelengths around 1310 nm or 1550 nm. This meansthat the human eye cannot see the beam, and the blink reflex can not protectthe eye. (The human eye can see light between 400 nm to 700 nm).

A laser beam can be harmful to the human eye (depending on laser power andexposure time). Therefore:

!! BE CAREFUL WHEN CONNECTING / DISCONNECTING FIBER PIGTAILS(ENDS).

NEVER LOOK DIRECTLY INTO THE PIGTAIL OF THELASER/FIBER.NEVER USE MICROSCOPES, MAGNIFYINGGLASSES OR EYE LOUPES TO LOOK INTO A FIBEREND.USE LASER SAFETY GOGGLES BLOCKING LIGHT AT1310 nm AND AT 1550 nm

Instruments exist to verify light output power: Power meters, IR-cards etc.

Flashlink® features:

All the laser module cards in the flashlink® product range, are Class 1 laserproducts according to IEC 825-1 1993, and class I according to 21 CFR1040.10 when used in normal operation.

More details can be found in the user manual for the FR-2RU-10-2 frame.

Maximum output power*: 5 mW.

Operating wavelengths: > 1270 nm.

*Max. power is for safety analysis only and does not represent device performance.

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AAV-MUX Rev. 2

General environmental requirements for Network Electronics equipment

1. The equipment will meet the guaranteed performance specification under the following environmental conditions:

- Operating room temperature range: 0°C to 50°C - Operating relative humidity range: <90% (non-condensing) 2. The equipment will operate without damage under the following environmental

conditions: - Temperature range: -10°C to 55°C - Relative humidity range: <95% (non-condensing)

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AAV-MUX Rev. 2

Product Warranty

The warranty terms and conditions for the product(s) covered by this manual follow the General Sales Conditions by Network Electronics ASA. These conditions are available on the company web site of Network Electronics ASA:

www.network-electronics.com

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AAV-MUX Rev. 2

Appendix A Materials declaration and recycling information

A.1 Materials declaration For product sold into China after 1st March 2007, we comply with the “Administrative Measure on the Control of Pollution by Electronic Information Products”. In the first stage of this legislation, content of six hazardous materials has to be declared. The table below shows the required information.

Toxic or hazardous substances and elements

組成名稱 Part Name

鉛 Lead (Pb)

汞 Mercury

(Hg)

镉 Cadmium

(Cd)

六价铬 Hexavalent Chromium

(Cr(VI))

多溴联苯 Polybrominated

biphenyls (PBB)

多溴二苯醚 Polybrominated diphenyl ethers

(PBDE)

AAV-MUX X O O O O O

O: Indicates that this toxic or hazardous substance contained in all of the homogeneous materials for this part is below the limit requirement in SJ/T11363-2006. X: Indicates that this toxic or hazardous substance contained in at least one of the homogeneous materials used for this part is above the limit requirement in SJ/T11363-2006.

A.2 Environmentally-friendly use period The manual must include a statement of the “environmentally friendly use period”. This is defined as the period of normal use before any hazardous material is released to the environment. The guidance on how the EFUP is to be calculated is not finalised at the time of writing. See http://www.aeanet.org/GovernmentAffairs/qfLeOpAaZXaMxqGjSFbEidSdPNtpT.pdf for an unofficial translation of the draft guidance. For our own products, Network Electronics has chosen to use the 50 year figure recommended in this draft regulation.

Network Electronics suggests the following statement on An “Environmentally Friendly Use Period” (EFUP) setting out normal use:

EFUP is the time the product can be used in normal service life without leaking the hazardous materials. We expect the normal use environment to be in an equipment room at controlled temperature range (0ºC - 40ºC) with moderate humidity (< 90%, non-condensing) and clean air, not subject to vibration or shock.

Further, a statement on any hazardous material content, for instance, for a product that uses some tin/lead solders:

Where a product contains potentially hazardous materials, this is indicated on the product by the appropriate symbol containing the EFUP. The hazardous material content is limited to lead (Pb) in some solders. This is extremely stable in normal use and the EFUP is taken as 50 years, by comparison with the EFUP given for Digital Exchange/Switching Platform in equipment in Appendix A of “General Rule of Environment-Friendly Use Period of Electronic Information Products”. This is indicated by the product marking:

50

It is assumed that while the product is in normal use, any batteries associated with real-time clocks or battery-backed RAM will be replaced at the regular intervals.

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AAV-MUX Rev. 2

The EFUP relates only to the environmental impact of the product in normal use, it does not imply that the product will continue to be supported for 50 years.

A.3 Recycling information Network Electronics provides assistance to customers and recyclers through our web site http://www.network-electronics.com. Please contact Network Electronics’ Customer Support for assistance with recycling if this site does not show the information you require.

Where it is not possible to return the product to Network Electronics or its agents for recycling, the following general information may be of assistance:

− Before attempting disassembly, ensure the product is completely disconnected from power and signal connections.

− All major parts are marked or labelled to show their material content.

− Depending on the date of manufacture, this product may contain lead in solder.

− Some circuit boards may contain battery-backed memory devices.

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AAV-MUX Rev. 2

EC Declaration of Conformity

Network Electronics ASA P.B. 1020, N-3204 SANDEFJORD, Norway

MANUFACTURER

AUTHORISED REPRESENTATIVE (Established within the EEA) Not applicable

AAV-MUX MODEL NUMBER(S)

Analogue audio de-embedder DESCRIPTION

LVD 73/23/EEC EMC 89/336/EEC

DIRECTIVES this equipment complies with

EN 55103-1:1996 EN 55103-2:1996 EN 60950-1:2006

HARMONISED STANDARDS applied in order to verify compliance with Directive(s)

TEST REPORTS ISSUED BY Notified/Competent Body Report no:

Nemko 67639001

Not applicable TECHNICAL CONSTRUCTION FILE NO

2006 YEAR WHICH THE CE-MARK WAS AFFIXED

TEST AUTHORIZED SIGNATORY

MANUFACTURER AUTHORISED REPRESENTATIVE (Established within EEA) Date of Issue

2007-10-15

Place of Issue

Not applicable Sandefjord, Norway

Thomas Øhrbom Name

Position Quality Manager (authorised signature)