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Production testing of the AD-SYNCHRONA14-EBZ
The production testing is quite simple. Since each board has been completely characterized, and we know the layout is good, we can just look for gross errors.
There are multiple test files for the different boards. (all in GitHub)
The tests and test parameters are in the production testing file. This is broken down into the following sections:
Front panel output channels
Back panel input channels
ports and SPI
Creating an AD-SYNCHRONA14-EBZ SD test card
Firstly, write the latest available SD card image found to a spare card to boot into Linux.
Creating a Raspberry Pi SD test card
The SD image used is based on Raspbian with Desktop.
Make sure you have added a wire to V
_IO select on the BR-068851 and also a jumper on EN pins. See below photo for reference.
Connect an Ethernet cable between the Pi and Synchrona
Add the scanner and keyboard USBs to the Raspberry Pi, and also an external display
Connect the Dymo LabelWriter450 label printer to the Raspberry Pi via USB
Power on the Raspberry Pi by plugging in the USB
-C power supply
Power on the Synchrona board by pressing the power button on the front panel an wait ~30sec
Firstly, make sure all the required steps from the setup explained above are completed. Once the setup is ready, testing should be done using the following steps:
For channels 11-14, attach the front panel cable to the Twinax to SMA adapter. Use the new probe to test.
The next step is testing the inputs, on the back panel. Use the SMA cable for back panel and attach it one at a time to REF IN, PPS, CH2 and CH3. For CH2 and CH3 inputs you only need to connect to one of the SMA connectors, P or N. On the input (P or N) you are not connecting the SMA cable place a SMA 50 Ohm terminator.
In order to test the UART
COMM 01, 02 and the SPI
Communication, attach a BR-068851 to the GPIO
port on the back panel.
Make sure to reboot the board in order to perform clean-up.
Make sure you have connected the Dymo LabelWriter 450 printer via USB
to the Rasperry Pi. A label will be printed that must be placed on the back of the board. See below image for reference.