apollo psa test point adaptor

Adrian Stoness tdk.knight at gmail.com
Tue May 21 11:53:59 CDT 2019

pritty much lol

On Tue, May 21, 2019 at 9:50 AM Jon Elson via cctalk <cctalk at classiccmp.org>

> On 05/20/2019 05:38 PM, Carl Claunch via cctalk wrote:
> > On 05/19/2019 09:46 AM, Jon Elson via cctalk wrote:
> >> 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.
> > In this case IRIG stands for Inertial Reference Integrating Gyroscope,
> one
> > of three inside the Intertial Measurement Unit of the spacecraft.
> Good GRIEF!  Clashing acronyms.  And, NASA certainly knew
> about the other IRIG, as they used IRIG standards on a lot
> of telemetry and radar systems.
> Jon

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