I do not think this is correct. The IRIG almost certainly refers to the Apollo Inertial Reference Integrating Gyro, which you can see in this video along with one of the PSA trays Adrian’s contraption is supposed to be testing:
https://youtu.be/lXe2OS4nwnQ BTW I got my Apollo IRIG at the same auction that Adrian got the Apollo PSA tester from. Marc From: cctalk <cctalk-boun...@classiccmp.org> on behalf of "cctalk@classiccmp.org" <cctalk@classiccmp.org> Reply-To: Jon Elson <el...@pico-systems.com>, "cctalk@classiccmp.org" <cctalk@classiccmp.org> Date: Sunday, May 19, 2019 at 7:46 AM To: Adrian Stoness <tdk.kni...@gmail.com>, <gene...@ezwind.net>, "cctalk@classiccmp.org" <cctalk@classiccmp.org> Subject: Re: apollo psa test point adaptor On 05/18/2019 10:08 PM, Adrian Stoness via cctalk wrote: anyone know where i could find manual or drawings on this im up in northern manitoba canada picked it up at a rr auction to experiment with as a audio interface not sure if the jacks on the side are the weird pins nasa had or another standard i can find? https://www.flickr.com/photos/1ajs/albums/72157705166193482 There's a switch labeled "IRIG" which stands for Inter Range Instrumentation Group, and refers to a standard for telemetry encoding. There is a standard for time code, a standard for modulating analog signas onto a bunch of FM carriers, and a standard for multiplexing several analog signals onto one FM carrier. Apollo documents are probably VERY hard to come by these days. Jon