Matt H. requested that we verify the ISS PDs were still connected in vacuum. I was able to get to the all 16 cables and tested each pair. They all tested fine with a reading of approximately .384VDC Anode to Cathode and OPEN Cathode to Anode on my Fluke 87V set to diode test. The last set I tested seemed to be reversed so I left them disconnected until I can have better access to the chassis under the chamber behind the HEPI support Structure.
Below is the instructions I received from Peter K and passed on. Thanks Richard for doing this
The only way to test all the diodes without laser light is to use the diode
tester function of a multimeter. To do that you'll have to disconnect the
cables from the electronics that's where they were when we put the array
in. With the multimeter on diode test, the negative (black) lead goes to the
cables/connector labelled cathode. The positive (red) lead goes to the ones
labelled anode. Touch the centre pins of the cable SMA connectors. If
everything is okay you'll get a buzz and a voltage reading just over 0.3 V
(either 0.38 or 0.34, don't remember exactly which).