Engineering Team Training

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Engineering Team TrainingWelcome to Engineering Team Training.

This training is currently evolving and is not complete yet. Hopefully within the next few weeks/months it will be completed and everything will be made available to you. As the training is updated, it will be added to this presentation so that you may view it.

Some of the links will go to blank pages, so don’t be concerned about that. The Technical Modules that are done so far are: Lithium Battery String Assembly, and Lead-Acid Battery Charging. The LSB-1 Module under Spacecraft types also has some good information in it.

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BackgroundThis training is meant to help you become a safe and effective member of the HABET Engineering team.

The Engineering team’s primary job is the overall construction of flight spacecraft for every HABET mission. This includes the construction of the exterior “box”, the interconnection and testing of the bus (LSB or HSB), and the integration of any scientific or engineering hardware being flown as a payload.

Their secondary job is to provide technical support for the Launch Team to ensure a successful launch and mission.


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MRR ChecklistMRR Checklist

FRR ChecklistFRR Checklist

Engineering Procedures

MIB BriefingMIB Briefing

Spacecraft Bus Test Procedure Spacecraft Bus Test Procedure (LSB-1)(LSB-1)

Final Flight Assembly & TestFinal Flight Assembly & Test

Engineering Launch SupportEngineering Launch Support

Post-Flight Spacecraft Check-InPost-Flight Spacecraft Check-In


MIB Briefing

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The Mission Initiation Board (MIB) is the first time that an actual mission purpose will have been determined by the EMT. A MMGR for the specific mission will be introduced at this time. Volunteers will be asked to fill the position of Launch, Flight, Recovery, and Engineering Director.

At this time there will be a general statement about the purpose of the mission and the Principal Investigator (PI) will give a brief description of the science or engineering portion of the mission. The SSOL Engineering Projects Director will briefly outline the capabilities of the spacecraft and any modifications or new circuitry that must be made to accommodate the PI and the mission parameters.

After the MIB has been completed and an ED assigned, it will be the job of the Engineering Team to implement the hardware necessary to make the flight a success!


Spacecraft Bus Test Procedure (LSB-1)

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The Spacecraft Bus Test Procedure is used to determine if the basic bus is ready to be used for a mission.

This procedure will determine if all functions of the LSB are performing within normal parameters. It will check for telemetry transmission, GPS lock, pinhole video, etc. This is to make sure that the particular bus assigned to the mission is flight ready.

This procedure may be performed anytime after the MIB, but MUSTMUST be done before the MRR.


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HABET has five complete LSB-1’s.

One (and sometimes two) is always being prepared for a mission. The third is used exclusively for the AerE 265Xclass. The fourth is used mostly for development testing by the Engineering Team. The fifth is currently being used by the RGS system.

The flight spares and development LSB-1’s are stored in a locked cabinet above the HABET workbench. Retrieve the LSB-1 that has been designated for your particular mission. (You will need the HABET Manager or the SSOL Engineer to open the cabinet for you)


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You will need to get a power source for the LSB-1. There are old batteries (from previous missions) kept on the HABET workbench. These are strictly for testing purposes. You will need one 12 Volt battery and one 9 Volt battery to complete this procedure.

Both battery strings should be measured with a multimeter to ensure that the charge they have left will be enough to perform the tests necessary for this procedure. The battery voltages should be:12 Volt - at least 11.5 Volts on the meter9 Volt - at least 8.5 Volts on the meter


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The test battery strings can now be connected to the LSB-1. The power connectors are on the bottom side of the LSB-1 mainboard. The 12 Volt connector is the two-pin 0.093 Molex locking connector with red and black wiring. The 9 Volt connector is a three pin 0.062 Molex connector with blue and black wiring. Each of these are unique, so there is no way to install them in the wrong spot or to reverse the wiring.

Once the wires are connected, push the batteries against the velcro to hold them in place. 12 Volt

Connector

9 Volt Connector


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Complete a visual inspection of of all wiring harnesses and connectors at this time.

- Check all the 12 Volt and 9 Volt power connectors and wires to make sure they are tight

- Check the serial connectors to the RS-232 interface to make sure they are seated properly

- Check the 5 Volt connections on the regulator board to make sure they are seated in their connectors properly - Visually inspect the solder joints on the MIM Module to ensure all of them are making contact

- Check the connectors to the transceiver to make sure they are tight

Solder Joints

Transceiver connections

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Connect the output of the Transceiver (BNC antenna connection) to the large dummy load on the workbench. Use the coaxial cable that is connected to the dummy load. This will absorb the RF radiation being transmitted, so that it will be safe to work on the LSB-1 in the lab.

Dummy Load

Connect the coaxial cable output of the Emergency Radio Beacon to the coaxial cable connected to the workbench VCR. This will allow you to test the pinhole camera video output to ensure proper operation.


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Install the test set of reset switches. This will allow the LSB-1 to power-up under external power conditions and turn all of the systems on (just as you would during the pre-Launch part of a mission).

They can also be used to reset the power to the LSB-1 any time during testing (after disconnecting the external power supply).

Reset Switch Set(Test Set)

External Power Relay Harness


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Locate the antenna cable for the GPS antenna on the roof. It is located on the RGS test bench (directly behind the HABET test workbench). Carefully uncoil the cable and stretch it over to the testing area for the LSB-1.

Connect the antenna cable to the GPS receiver on the LSB-1. Make sure the connector is inserted fully to ensure proper contact and good signal propagation to the receiver.

GPS Antenna Connector

GPS AntennaCable


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Check the black box directly above the Power Supply. It is the unit that routes the power up to the antenna. The green ‘LOCK’ indicator light should be on. This indicates that the antenna is receiving power and should be providing a GPS signal to the receiver at this time.

Lock Indicator

Locate the 12 Volt Power Supply on the RGS workbench. It is used to supply power to the GPS antenna on the roof. Turn on the power - the red LED on the Power Supply should be on.

12 Volt PowerSupply


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Connect a 12 Volt Lead-Acid battery to the external power connector. HABET test batteries are located on the workbench and are usually kept fully charged.

12 Volt Lead-AcidBattery

Power Connector

Once the battery has been connected, the cooling fan on the Transceiver should be running. This will be the only outward sign that the system is on.

The next step will be to power on the test equipment to verify proper operation of all systems.


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Power-up the VCR on the workbench. It should be set for channel 59 - if it is not - use the remote to set the channel.

The video monitor above the VCR should be showing a picture at this time.

If it is not: - Double check the VCR/monitor connections - Double check the connection between the Radio Beacon transmitter and the VCR - Check the 9 Volt battery for proper voltage - Check the power connector at the pinhole camera to ensure the Relay Board is working - Use an oscilloscope to verify that a video signal is coming from the pinhole camera


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Power-up the Radio Scanner on the workbench. Set the scanner to the frequency 446.375 MHZ - this is on channel 2.

If the scanner is not on channel 2, press the Manual button then the Up or Down arrow to indicate direction of channel change. Press the Manual button until you reach channel 2.

Power-up the TNC.


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On Jupiter, start a terminal program to view telemetry. If in Windows, you may use Hyperterminal. From the Start menu select Programs, Accessories, Hyperterminal. There is a HABET icon in the folder that has all of the test station defaults set for proper reception of data.You may also exit to DOS and use the terminal program TELIX (the same as Flight and Recovery use).

If any of this equipment is malfunctioning, you may use the standard Flight gear in the Flight Console area for testing purposes.


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Allow the LSB-1 under test to run for a minimum of 15 minutes. After this period of time, check the following:

- Proper telemetry format on Jupiter or console data computer- Callsign is correct- Analog/digital data appears to be correct

- Pinhole video reception is clear on video monitor- Lock has been obtained by the GPS board – this is indicated on the GPS telemetry as a change from 0 to 1 in data field #6

Power down the LSB-1- Disconnect external 12V lead-acid battery and depress reset switches- Disconnect all test cables- Tag external power connector with green wire tie tag- Place LSB-1 in cabinet

Power down test equipment and store cables


MRR Checklist

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Final Flight Assembly & Test

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FRR ChecklistThe Flight Readiness Review (FRR) is the last check before flight. The Engineering Team must have the spacecraft that is assigned for the mission ready to go. That means it is ready to fly as if you were going to launch at the end of the FRR.

Prior to the FRR, the Engineering Team will need to power-up the spacecraft on external power. This will allow the Flight and Recovery Teams the chance to test their equipment to insure it is flight-ready.

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Engineering Launch Support

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After the FRR, the spacecraft that is being flown becomes the responsibility of the Launch Team. However, the Engineering Team will have at least one individual assigned as a Launch support person.

The Launch Support Engineer will be responsible for helping the Launch Team determine if the spacecraft is functioning within the parameters determined before flight. They will also be responsible for making sure that the Launch team remembers perform any necessary functions prior to launch. These can include things such as reset buttons pushed, audio beacon turned on, drain plug removed for ballast dump, etc. All of these things will be non-typical for any given flight, and the Launch Team may not be equipped (trained) to perform the necessary functions.


Post-Flight Spacecraft Check-In

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Once the mission has been completed, a Post-Flight Spacecraft Check MUST be performed.


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Wire Harness and Connector Wire Harness and Connector AssemblyAssembly

Circuit Board Design and Circuit Board Design and LayoutLayout

Engineering Technical TrainingLithium Battery String Lithium Battery String AssemblyAssemblyLead-Acid Battery ChargingLead-Acid Battery Charging

Soldering Soldering

Circuit Board EtchingCircuit Board Etching

Spacecraft Enclosure AssemblySpacecraft Enclosure Assembly

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Lithium Battery String AssemblyHABET uses Lithium Sulphur Dioxide (LiSO2) batteries for all flights. These batteries are lightweight and very powerful.

The battery packs for flights are assembled in the lab from military surplus batteries. These batteries come in groups of ten and must be broken apart and then reassembled into the appropriate voltage packs needed by HABET.

This segment of training will completely describe this process.

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Each cell (approx. the same size as a flashlight D-cell) in the surplus package is capable of providing 3V DC. Thus any battery packs made will be a multiple of 3V (i.e. - 3, 6, 9, etc.).

Each cell is also capable of providing 7000 milliamphours of power. What this means is that each cell could provide 7000 milliamps of continuous power for one hour before being drained, or 1000 milliamps of continuous power for 7 hours before being drained.

As stated earlier, these batteries are very powerful. Contacting the positive and negative terminals together will cause sparking and possible explosion.


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THESE CELLS ARE NOT THESE CELLS ARE NOT RECHARGEABLE!!!!!!!RECHARGEABLE!!!!!!!

Attempts to recharge these batteries will lead to explosion and fire, along with possible personal injury

- DO NOT MAKE THIS - DO NOT MAKE THIS MISTAKE!MISTAKE!

BOOM!


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Caution should always be exercised when handling, assembling, and connecting these batteries - they can be hazardous.

The picture shown below is evidence of what can happen.

This is what was left after a 9V battery pack exploded.

It had been mistakenly hooked up to be recharged!


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First, the existing surplus batteries must be broken apart so that they may be reassembled into something HABET can use.

Then open the white outer box and remove the battery pack - save the white box - it will be used later in this process.

Cut open the plastic bag and remove the white battery box.

Carefully slice open the lithium battery box at both ends. Remove the battery cells from the box.


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Carefully pry the rows of cells apart. Cut any wiring that is hanging from the connections - this will include the fuse connector block and the other wiring.

Cut the cells apart at the spots shown - leave the other connections between the cells. This will make assembly into battery packs easier later on.

There should be four groups of cells: 2 groups of two and 2 groups of three.

Cut battery tabs here

Finished battery cell separationFinished battery cell separation


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Select the appropriate number of cells to make the battery pack (this example will use 4 cells - making it a 12V pack).

Align the cells to make their interconnection easier. The positive connection is in the middle of the cell and the negative is along the outside edge of the cell. Connections will be made ‘+’ to ‘-’ to achieve 12V.

Cut a piece of cardboard from the white box saved earlier - this will serve to support the cells and keep them from moving.

White cardboard White cardboard from outer boxfrom outer box


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Using the piece of cardboard as a support, tape the cells together with gray duct tape. Be sure to use the gray tape! The battery pack will be color-coded at the end of this procedure with the appropriate color.


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Cover the bottom of the battery pack with gray duct tape also. Using two pieces of tape, make approximately a double width strip of tape that will cover the bottom plus extra on the end. Place the battery pack in the middle of the tape and fold over the sides. Cut the ends at the points shown to aid in the folding of the tape. The taped battery pack should look as shown below.

Cut tape hereCut tape here


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Positive terminal Positive terminal of battery packof battery pack

Negative terminal Negative terminal of battery packof battery pack

Interconnection Interconnection required to complete required to complete battery pack to 12Vbattery pack to 12V

The cells must now be connected to complete the battery pack. The cells that already have their connection strips in place will not need to be altered. However, where the cells have no connection to other cells, they will need to have wiring soldered to them to complete the battery pack. A wiring harness will also be soldered to what will become the positive and negative terminals of the battery pack (see the technical section on soldering for more details on how to solder). Note: the positive terminal of each cell is the middle terminal and the negative terminal of each cell is on the edge of the cell.


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Duct tape insulationDuct tape insulation

Terminals to be Terminals to be connectedconnected

Place small pieces of duct tape to insulate the area to be interconnected and soldered. THIS IS CRITICAL! Because these cells are powerful - shorts in wiring can be dangerous and can happen fairly easily (not to mention the fact that failure in flight would be extremely bad!!). Insulation is important to keep this from happening.


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Use the heavy-duty soldering gun to make the connections to the cells - they absorb heat very well and the small soldering iron cannot provide enough heat for solder to stick to the metal.

Tin (apply solder) the metal tabs that are to be connected - make sure the solder flows well and leave an adequate amount for the wire connection to be made later.

Cut a short piece of 18 gauge wire (enough to connect the two tabs). Strip the ends and tin them with solder. Place the wire on the tabs and heat with the soldering gun to make the connection.Tinned tabsTinned tabs


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Visually inspect the connections for tightness - wiggle the wires to make sure they will not come loose in flight. Cover the connections with another layer of duct tape for insulation.

Tin the positive and negative battery pack terminals with solder.

Make a wiring harness for the battery pack (see the technical section on Wire Harness and Connector Assembly). Measure the ends so that the main wiring harness will be in the center of the battery pack as shown. The length of the harness that extends from the battery will vary depending on the application.

Tinned tabsTinned tabs

Wire harness Wire harness (centered)(centered)


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Strip the ends of the wiring harness, ten tin the ends with solder. Solder the wiring harness to the battery pack. Make sure to attach the red wire to the positive terminal and the black wire to the negative terminal - THIS IS CRITICAL!!

Once the wiring harness has been soldered in place, double check the connections to make sure they are secure (wiggle and tug on them!).

The completed battery pack should look like the one shown below.


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Cover the top of the battery pack with another layer of duct tape. A double width strip should be used to help protect the terminals and hold the wiring in place. Cut the tape to allow the wiring harness to extend through. When finished the battery pack will look like the one shown below.


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The battery pack needs to have its final layer of duct tape (finally!). The color of duct tape selected will be based on the voltage of the battery pack - this allows users to visually tell what the voltage is without having to measure the voltage. The color-code is as follows:

Blue - 9 VoltsBlue - 9 Volts

Red - 12 VoltsRed - 12 Volts

Yellow - 15 VoltsYellow - 15 Volts

Green - 24 VoltsGreen - 24 Volts


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Once the colored tape has been applied, write the current date near the bottom of the battery pack with a permanent marker.

Check the voltage at the connector end of the battery pack to ensure that all cells are correctly connected and functioning. Once this is done, place the battery in the HABET Engineering cabinet in the appropriate container.


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Wire Harness & Connector Assembly


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HABET uses many different types of wiring harnesses for its spacecraft. There are a number of standard types (power supply wiring, etc.). There are also many custom made harnesses for many different purposes - these are usually mission specific and made for each flight.

When deciding what type of connector and wire to use, there are a number of factors that will impact what connectors you will use. Wire size will be determined by the amount of current that will be running in the circuit. Connector type will be determined by the set of standard connectors, and what they will be used for.


Lead-Acid Battery Charging


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HABET uses two different types of Lead-Acid batteries during a typical mission.

The small battery shown at right is used for such things as the external power for the spacecraft during the fill process. It is also used for powering the Radio Telemetry Unit that the Recovery Team uses.

The Recovery Team also uses a large gel-cell Lead Acid battery for powering the video monitor and VCR that are used for pinhole video capture.

Proper recharging of these batteries is VERY Proper recharging of these batteries is VERY IMPORTANT!IMPORTANT!



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To charge the smaller Lead-Acid batteries, you will need the following items:

- Elenco Model XP-650 Variable Power Supply

- HP 3490A Digital Multimeter

- Battery charging wire harness (this should be already attached to the power supply and multimeter)

All of these items are on the HABET Test Bench in room 2352.

Power Supply

Multimeter

Wire Harness



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Double check the connections to the Power Supply and the Multimeter.

On the Power Supply:- black wire to green (-) terminal- red wire to red (+) terminal

On the Multimeter:- orient the connector as shown

Double check that the Power Supply and Multimeter are both turned off.

Connect the battery to the white two-pin connector.



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Turn on the Multimeter.

The voltage shown will be the actual voltage of the battery (before charging starts).

On the Power Supply, adjust the voltage knob (left-hand) fully counter-clockwise. This will adjust it to zero volts output

Adjust the current knob (right-hand) fully clockwise.

THIS MUST BE DONE BEFORE THE POWER SUPPLY IS TURNED ON!!THIS MUST BE DONE BEFORE THE POWER SUPPLY IS TURNED ON!!

Voltage Adjust Current Adjust



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Turn on the Power Supply.

Carefully adjust the voltage control knob clockwise until the current meter starts to move. The current meter is the one on the right hand side labeled D.C. AMPERE.

DO NOT EXCEED 1.0 DO NOT EXCEED 1.0 Amps on the scale Amps on the scale reading!!! This could reading!!! This could cause the battery to cause the battery to explode and cause explode and cause serious damage.serious damage. DO NOT EXCEED 14.5 Volts as shown on the DO NOT EXCEED 14.5 Volts as shown on the

Multimeter or explosion and damage may result.Multimeter or explosion and damage may result.

Power Switch

Current Meter

At the same time, check the voltage on the Multimeter



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Periodically, you will have to check the current and voltage levels on the Power Supply and the Multimeter. As the battery charges, the voltage will increase and the current will decrease.

Keep increasing the voltage knob clockwise on the Power Supply until the voltage reading on the Multimeter has reached 14.50 Volts. DO NOT Exceed 1.0 Amps!DO NOT Exceed 1.0 Amps!

Once this voltage has been reached, leave the battery connected until the current meter has reached zero.



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Fill in the information on a Battery Recharge Tag. This sheet is on the HABET Engineering workbench area in the middle near the technical notebooks, etc.

Apply the Battery Recharge Tag over the end of the battery connector. This will allow anyone to see that the battery has been charged.

Once this has been completed return the battery to it’s proper location (i.e. - the Launch Team Box, Recovery Team Box, etc.).


Spacecraft Enclosure Assembly


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Soldering


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Circuit Board Design & Layout


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Circuit Board Etching


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Cutdown Coil Assembly


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Lab Equipment


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HSB-1HSB-1

Spacecraft Bus Types

LSB-1LSB-1

LSB-2LSB-2

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LSB-1The LSB-1 (Light Spacecraft Bus) is designed with simplicity in mind. Typically it is not used for any major scientific experiments. It can be used for testing of new engineering circuit designs, imaging flights and for operations team proficiency flights.

It is designed for flights under six pounds to meet FAA requirements.

It includes both custom-designed circuitry (made in the lab) and commercial-off-the-shelf (COTS) circuit boards.


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The functional block diagram for the LSB-1 is shown at right.

To familiarize yourself with its individual components, click on any of the components to view the technical description and interconnection properties of each.


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LSB-1: GPS ReceiverHABET currently uses a Motorola GPS receiver.

It is based on their Oncore GPS engine series. There are two different versions available for use in spacecraft - however, since they are functionally the same, we will ignore their differences here. Each receiver has a minimum of 8 channels (can receive signals from up to 8 satellites at a time).


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Motorola VP Oncore GPS Engine



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LSB-1 Block Diagram

Data/Power Connector

Antenna Connector

There are two connectors on the GPS board that are used for interfacing with the other components in the LSB-1.

The first is the Data/Power Connector. It is a 10-pin connector that has pins for +5V, Ground, and an RS-232 interface for programming and external communication.

The second is the Antenna Connector. It is an MCX/RF connector that hooks to the external GPS antenna. This allows the GPS board to receive radio signals from GPS satellites.



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LSB-1 Block Diagram

Pin # 1 3 5 7 9

Pin # 2 4 6 8 10

The Data/Power Connector is a standard 10-pin, 2 row, .100 Header. The individual pins are connected as follows (not all of these pins are used on the LSB-1):

Pin 1: BATT External battery Back-up

Pin 2: PWR +5V DC, Regulated power

Pin 3: GND Ground

Pin 4: VPP EPROM Programming Voltage

Pin 5: TTL RXD2 RTCM Input Port - DGPS

Pin 6: 1PPS 1 Second Timing Pulse

Pin 7: 1PPS RTN Timing Pulse Return (Ground)

Pin 8: TTL TXD1 Primary Output

Pin 9: TTL RXD1 Primary Input

Pin 10: TTL RXD2 TTL Return (Ground)



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Pin 1 (BATT) is the External Battery Back-up pin. It is used to connect a small battery to the GPS board to make it retain it’s memory and last known position. It is not connected on the LSB-1.

Pin 2 (PWR) is where the 5V DC regulated power is connected. This voltage MUST be within +/- 25% - that is in the range of 4.75V to 5.25V or the GPS board will not function correctly. It may drift in and out of GPS lock, or it may never lock at all. The 5V/RS232 Interface Board provides this voltage through one of it’s regulators.

Pin 3 (GND) is the ground connection. This must be connected to battery ground for the board to operate correctly. The 5V/RS232 board is connected to battery ground.

Pin 4 (VPP) is used only for programming the EPROM of the GPS board. This would be used in the case of a new firmware update from Motorola.

Pin 5 (TTL RXD2) is a TTL Logic level input (0 to 5V). It is used for input directly from a Differential GPS receiver (DGPS). The GPS receiver uses this input for corrections that allow the position to be more accurate. The LSB-1 does not use this.

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Pin 6 (1PPS) is a timing connection. This pin outputs a 0 to 5V pulse that is 200 mS in width. It has an accuracy of <500 nS with a rise time of 20 to 30 nS. It can be used for accurate timing of events onboard. It is not used on the LSB-1.

Pin 7 (1PPS RTN) is the ground connection for the 1PPS connection. This pin ensures that the pulse is translated by other circuits as a TTL logic signal.

Pin 8 (TTL TXD1) is the primary TTL output of the GPS board. It is the data connection that connects to the MIM Module so that the GPS string appears in the telemetry. There is also a spare connector from this pin to connect to other components that require GPS – such as the Altitude Switch.

Pin 9 (TTL RXD1) is the primary TTL input of the GPS board. It is used strictly for sending communications to the board for setting the parameters. This includes the baud rate of TTL TXD1, the type of GPS string transmitted, etc. It is only used for programming the GPS board prior to installation in an LSB-1 mainboard.

Pin 10 (TTL RTN) is the ground connection for the TTL Ports. This pin ensures that the TTL input pins and output pins are correctly interpreted by other circuits.

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LSB-1 Block Diagram

Orange & BlackPower Wire Harness

Grey DataWire Harness

10-pin HeaderConnector

AuxiliaryGPS Conn.

5V Power Connector

RS232 DataConnector

The wiring harness that connects the GPS board to the 5V/RS232 board is shown here. The 10-pin Header Connector is connected to the GPS board’s Data/Power Connector.

The RS232 Data Connector is connected to the 5V/RS232 Board at the terminal marked ‘GPS’.

The 5V Power Connector is also connected to the 5V/RS232 Board. It is connected to any of the 5V power ports available (there are 8 – see the section on the 5v/RS 232 Board).

There is also an Auxiliary GPS Connector for connection to other circuits that use GPS as an input (Altitude Switch).



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LSB-1 Block Diagram

Orange & BlackPower Wire Harness

Grey DataWire Harness

The schematic for the wiring harness for connecting the GPS board to the 5V/RS232 Interface board is shown below.



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LSB-1 Block Diagram

GPS Receiver Programming

All Motorola GPS receivers come programmed with factory settings. The Engineering Team is responsible for programming the receivers for flight.

The software package used for this is called ‘SynTac’. This software allows the user to set many parameters of the GPS receiver. Some of these include setting the serial baud rate, NMEA output, receiver use type (i.e. land, air, or water), and interval between position outputs.



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LSB-1 Block Diagram

The user window


LSB-1: GPS AntennaThe GPS antenna that is used with the GPS receiver is also a product made by Motorola.

It is an active patch antenna - this means that it is a circuit board type antenna with an integrated circuit amplifier built in to help boost signal reception.

The antenna connects to the GPS receiver via a small coaxial cable with an MCX-type connector.

The amplifier receives its power from the GPS receiver up through the coax cable.


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LSB-1 Block Diagram


LSB-1: External Power Relay Board

This circuit board was custom designed in the SSOL.

Its purpose is to allow spacecraft to be powered-up externally with a 12V battery. It consists of two relays. The first is the main power relay that provides power from the battery to all of the components in the spacecraft. The other relay is for the Emergency Radio Beacon power.


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LSB-1 Block Diagram


LSB-1: 70cm Transceiver


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LSB-1 Block Diagram


LSB-1: Transmitter Antenna


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LSB-1 Block Diagram


LSB-1: Audio Beacon


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LSB-1 Block Diagram


LSB-1: MIM Module


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LSB-1 Block Diagram


LSB-1: RS232 Interface/5V Regulator


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LSB-1 Block Diagram


LSB-1: ATV Transmitter


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LSB-1 Block Diagram


LSB-1: Pinhole Camera


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LSB-1 Block Diagram


LSB-1: Sensors


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LSB-1 Block Diagram


LSB-1: Lithium Battery Packs


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LSB-1 Block Diagram


LSB-1: Wiring Harness/Color Code


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LSB-1 Block Diagram


Print Exam

• Once you have completed this Power Point presentation for the Engineering TeamEngineering Team Training you can take the exam.

• Remember that you need a 90% score, but you can repeat the exam as many times as necessary (two hours between exams)

• Press the “print exam” button below and once completed, take the exam to the Engineering Director (or HABET Manager) for the oral exam and sign-off on your certification card.

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