Tests | Jam Guard

Testing Jam Guard

We put Jam Guard through various tests to validate the predetermined engineering and marketing requirements.

ST: GPS Receiver Board

Objective: Confirm the Adafruit GPS receiver can maintain a consistent lock on

Procedure: Connect the GPS module to RPI via UART (Universal Asynchronous Receiver/Transmitter) and run python program to read data from the module

Conclusion: Ultimate GPS Breakout v3 GPS receiver functions properly with accurate longitude and latitude to our location after GPS lock on

FT: Measuring Return Loss

Objective: To confirm the RF return loss of Jam Guard is less than 10 dB (ER 2.2)

Procedure: Use the RF Demo kit to calibrate the cable. Connect the calibrated cable to the thru port on Jam Guard. Measure S11

Conclusion: Jam Guard meets the requirement for less than 10 dB return loss

ST: Jam Guard GPS Lock-on

Objective: To confirm that Jam Guard can be easily installed to GPS receiver as well as send GPS L1 signal through the connection to a Raspberry PI 4B (MR 2/MR 6)

Procedure: Connect the PCB to 5V and 3.3V power. Connect the board to the GPS module. Power on the board and monitor response from the RPI

Conclusion: We confirmed that our PCB is able to receive GPS L1 and transmit it through the GPS module to the RPI

FT: Measure Initialization Time

Objective: To confirm the initialization time of the PIC is under 100μS (ER 6.2)

Procedure: Run the code and measure the time between initialization and the first codebook row

Conclusion: Microcontroller is ready to scan under 41 μs which meets the requirement

FT: Measuring Power Condumption

Objective: Measure the total current being consumed by our device (ER5/MR5)

Procedure: Power Jam Guard using a bench supply (5V and 3.3V) and observe the current measurement shown on the supply

Conclusion: Jam Guard comfortably sits within the specs and met the requirement