Embedded Files
Thruster board Test Plan and Procedure
Thruster board Test Plan and Procedure
Start Date:
11/12/2025
End Date:
21/11/2025
Part Name:
UMS-0660
Application:
Thruster Control Board
Quantity:
3
Physical Characteristics Summary
Physical Characteristics Summary
Item
P1
P2
Property Item
Visual Inspection
Measurement of physical characteristics
Result
Pass
Pass
Details
Test Summary
Test Summary
Item
T1
T2
T3
T4
T5
T6
Test Item
Voltage verification
Solenoid valve driver
PT interface test
Temperature sensor interface
Arm/fire sequences
AODCS interface
Test Result
Pass
Details
Test Sample List
Test Sample List
No.
1
S/N
UMS-0660-FM
Pack Group
UMS-0660-FM
1- Visual Inspection
1- Visual Inspection
Item
P1
Test Item
Visual Inspection
Test Specification
Inspect the board for any deformation, discontinuity in visible traces, and cracks on the boards. look for missing components, misplaced components and cracked/ broken/ bent components.
Judge Criteria
There shall be no such defects or flaws stated in the test specifications in any of the received boards.
Samples
3
Test Period:
Test Equipment:
Major Problem:
Warning:
Recommendation:
Verification Activities:
11/12/2025 to 11/12/2025
FM Thruster boards ( UMS-0660)
None
Use the ESD safe mat for all these inspections
None
2- Measurement of physical characteristics
2- Measurement of physical characteristics
Item
P2
Test Item
Measurement of physical characteristics
Test Specification
The Width and the height of the board must be measured and recorded. The thickness of the boards must be recorded . The height of the highest component must be measured and recorded. The mass of all the boards must be measured and recorded.
Judge Criteria
Width: 90±0.25 mm
Height: 90±0.25 mm
Thickness: 1.59±0.25 mm
Highest component(R1):
7.75±0.1 mm
Samples
3
Test Period:
Test Equipment:
Major Problem:
Warning:
Recommendation:
Verification Activities:
11/12/2025 to 11/12/2025
FM Thruster board( UMS-0660), caliper
None
Use the ESD safe mat for all these inspections
None
Raw Data:
3- Voltage Verification
3- Voltage Verification
Item
T1-1
Test Item
Input Power Applied (Bus voltage=6.4V)
Test Specification
Connect a bench DC supply to the thruster board. Set Vbus = 6.4 V (current limit set to a safe value for first power-on).Power ON the board and observe input voltage to the board is equal to the bus voltage. Ensure no external loads are connected except measurement equipment.
Judge Criteria
Vbus at board input = 6.4 V ±5% (6.08–6.72 V). No abnormal behavior (no smoke/overheat).
Samples
1
Test Period:
Test Equipment:
Major Problem:
Warning:
Recommendation:
Verification Activities:
11/12/2025 to 11/12/2025
FM Thruster board( UMS-0660), variable power supply, Multimeter
None
Use the ESD safe mat for all these inspections
None
R-LIB-TRS-015
Item
T1-2
Test Item
Spike Voltage Verification (12 V)
Test Specification
Measure spike voltage rail at designated test point(C11) using measurement equipment.
Judge Criteria
Spike voltage = 12 V ±5% (11.4 V – 12.6 V).
Samples
1
Test Period:
Test Equipment:
Major Problem:
Warning:
Recommendation:
Verification Activities:
11/12/2025 to 11/12/2025
FM Thruster board( UMS-0660), variable power supply, Multimeter
None
Use the ESD safe mat for all these inspections
None
R-LIB-TRS-014, R-LIB-TRS-016
Item
T1-3
Test Item
Hold Voltage Verification (2.5 V)
Test Specification
Measure hold voltage rail at designated test point(C33) using measurement equipment.
Judge Criteria
Hold voltage = 2.5 V ±5% (2.375 V – 2.625 V).
Samples
1
Test Period:
Test Equipment:
Major Problem:
Warning:
Recommendation:
Verification Activities:
11/12/2025 to 11/12/2025
FM Thruster board( UMS-0660), variable power supply, Multimeter
None
Use the ESD safe mat for all these inspections
None
R-LIB-TRS-014, R-LIB-TRS-017
Item
T1-4
Test Item
MCU Supply Voltage Verification (3.3 V)
Test Specification
Measure MCU supply rail at MCU VDD test point(C6) using measurement equipment.
Judge Criteria
MCU supply voltage = 3.3 V ±5% (3.135 V – 3.465 V)
Samples
1
Test Period:
Test Equipment:
Major Problem:
Warning:
Recommendation:
Verification Activities:
11/12/2025 to 11/12/2025
FM Thruster board( UMS-0660), variable power supply, Multimeter
None
Use the ESD safe mat for all these inspections
None
R-LIB-TRS-014, R-LIB-TRS-018
Item
T1-5
Test Item
Pressure Sensor Supply Voltage (5 V)
Test Specification
Measure pressure sensor supply rail at test point(C9) using measurement equipment.
Judge Criteria
Pressure sensor supply voltage = 5.0 V ±5% (4.75 V – 5.25 V)
Samples
1
Test Period:
Test Equipment:
Major Problem:
Warning:
Recommendation:
Verification Activities:
11/12/2025 to 11/12/2025
FM Thruster board( UMS-0660), variable power supply, Multimeter
None
Use the ESD safe mat for all these inspections
None
R-LIB-TRS-009, R-LIB-TRS-019
Item
T1-6
Test Item
Reaction Wheel Supply Voltage (5 V)
Test Specification
Measure reaction wheel supply rail at output connector pin 1 of RW1,RW2,RW3,RW4 using measurement equipment.
Judge Criteria
Reaction wheel supply voltage = 5.0 V ±5% (4.75 V – 5.25 V).
Samples
1
Test Period:
Test Equipment:
Major Problem:
Warning:
Recommendation:
Verification Activities:
11/12/2025 to 11/12/2025
FM Thruster board( UMS-0660), variable power supply, Multimeter
None
Use the ESD safe mat for all these inspections
None
R-LIB-TRS-020
4- SV Driver
4- SV Driver
Item
T3
Test Item
Verify driver can actuate the solenoid valve (functional actuation)
Test Specification
Follow the instructions provided below for driver to verify its functionality
Judge Criteria
Coil voltage within design limits during actuation(12 V spike and 1.6 hold voltage)
Coil current within design limits (<
2 A).
Valve opens within ≤2.5 ms of fire command.
Samples
1
Test Period:
Test Equipment:
Major Problem:
Warning:
Recommendation:
Verification Activities:
14/11/2025 to 17/11/2025
board assemblies, power supply, digital oscilloscope, Solenoid valve
None
Use the ESD safe mat for all these inspections
None
R-LIB-TRS-014
Raw Data:
Detailed Instructions:
Apply board nominal input power.
Command the driver to fire the valve with the nominal spike/hold profile.
Measure coil voltage/current at the valve connector.
Confirm pressure-vent actuation.
Repeat for 10 consecutive actuations with a 5 s cool-down between cycles.
5- PT interface test
5- PT interface test
Item
T1
Test Item
Verify the pressure transducer interface and ADC measurement functionality .
Test Specification
Follow the instructions provided below to verify the functionality.
Judge Criteria
The test PASS if:
• Sensor supply voltage is within nominal range (5.0 V)
• ADC reading changes with increasing/ decreasing pressure.
• Measured pressure value error ≤ ±1% of full-scale across the test range. Otherwise, Fail.
Samples
Test Period:
Test Equipment:
Major Problem:
Warning:
Recommendation:
Verification Activities:
14/11/2025 to 17/11/2025
FM Thruster board( UMS-0660), FM pressure transducer( UMS- 0743), variable power supply, fixed 5V power supply, thermometer
None
Use the ESD safe mat for all these inspections
None
R-LIB-TRS-009
Raw Data:
Board Assembly:
Detailed Instructions:
Connect the pressure transducer to the PCB.
Power up the board and ensure the sensor supply voltage is within specification.
Apply known pressure values (e.g., 0%, 25%, 50%, 75%, 100% of full-scale) using a calibrated pressure pump or reference gauge.
Log the corresponding ADC raw counts and the converted pressure values from telemetry.
6- Thermistor interface
6- Thermistor interface
Item
T2
Test Item
Verify temperature transducer interface and ADC conversion.
Test Specification
Follow the instructions provided below for temperature sensor to verify their functionality. Use a thermometer as a truth measurement and compare the measured temperatures.
Judge Criteria
The temperature readings shall agree with the thermometer value with 5% accuracy.
Samples
Test Period:
Test Equipment:
Major Problem:
Warning:
Recommendation:
Verification Activities:
14/11/2025 to 17/11/2025
FM Thruster board( UMS-0660), variable power supply, fixed 5V power supply, Thermistors, thermometer.
None
Use the ESD safe mat for all these inspections
None
R-LIB-TRS-012
Raw Data:
Detailed Instructions:
Connect the temperature sensor to the board.
Power up the board; confirm sensor excitation/bias voltage.
Apply three or more known points equivalent resistances per datasheet.
Log ADC counts and computed temperature .
7-Arm/Firing
7-Arm/Firing
Item
T4
Test Item
Verify two-stage activation sequence (Arming then Firing)
Test Specification
Follow the instructions provided below to verify arming/firing sequences
Judge Criteria
Inhibited: With ARMED=0, FIRE command does not energize the coil
Sequenced: With ARMED=1 and valid FIRE, coil is energized
Samples
1
Test Period:
Test Equipment:
Major Problem:
Warning:
Recommendation:
Verification Activities:
14/11/2025 to 17/11/2025
board assemblies, power supply, multimeter, digital oscilloscope, Solenoid valve
None
Use the ESD safe mat for all these inspections
None
R-LIB-TRS-008
Raw Data:
Detailed Instructions:
With board powered, attempt Firing without Arming: issue FIRE command only.
Arm the driver (ARM command/switch input). Verify ARM status line/telemetry.
Issue FIRE command.
Monitor: PWM, ARM status line, and coil V.
Attempt disarm and confirm that firing is inhibited until re-armed.
8- AODCS interface
8- AODCS interface
Item
T4
Test Item
Verify UART communication interface between thruster board and AODCS
Test Specification
Follow the instructions provided below to verify the communication.
Judge Criteria
UART TX and RX signals are present and meet logic voltage thresholds.
Communication baud rate and framing match between AODCS and thruster board.
For valid commands, thruster board sends correct and complete response messages.
For invalid or corrupted commands, the thruster board rejects the command or sends an error code without system hang.
Samples
1
Test Period:
Test Equipment:
Major Problem:
Warning:
Recommendation:
Verification Activities:
14/11/2025 to 21/11/2025
Board assemblies, variable power supply, fixedpower supply, electronic load, multimeter, oscilloscope or logic analyzer, AODCS board, UART cables
None
Use the ESD safe mat for all these tests
None
R-LIB-TRS-002
Raw Data:
Board Assembly:
Detailed Instructions:
Connect the AODCS board to the thruster board using the UART interface as defined in the ICD.
Power both boards with nominal voltages .
From AODCS, send command packets to the thruster board (Thrust, Time, ARM, FIRE).
Monitor UART TX/RX lines using an oscilloscope to verify correct signal levels, and data framing.
Confirm that the thruster board responds with appropriate status packets and acknowledgements.
Repeat the test for a sequence of valid and invalid command packets to verify robustness.
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