This alignment procedure is an alternate from the factory manual ver 1.1, page 13. It uses levels that are more in line with the Authur's specifications and definitions. This might work for you as well. Otherwise, the factory manual and procedure is downloadable from their web site.
The voter takes in eight separate signals from remote receivers. It "listens" to a audio portion of those eight inputs and converts them to DC levels to drive a microprocessor. Quieting for a channel is indirectly proportional to this DC level. Therefore, a DC voltage around 0 is either a full quite signal or no signal (standby condition). A DC voltage around 3-5 is a noisy or full noise (open squelch) signal/channel. (Obviously there's no signal with full noise, but we are calling it that for sake of explanation, here).
When converted inside the microprocessor and viewed on the front panel screen these figures are reversed and shown in three digits. For example an inactive channel will show a "000". A rather noisy signal will be around a "100", while a full quite signal will be around a "255" on the panel. A graph for one of the channels was ploted, which is on the first page of this article. Keep in mind the voter is looking at flat audio from the receivers.
Issues and Notes
There were some errors, then later, changes, to some of the component circuit designators. For example, most of the adjustment pot's label were changed. Original designators were R17 through R24 for the "AUD" adjustments and R41 through R48 for the "Noise" adjustments for schematic Revision 2.0. These were change to VR1 through VR8 and VR9 through VR16 respectively for schematic Revision 3.2. The latter makes better sense to the Author as well. Therefore, the following alignment will reflect the last change for these adjustments.
This is an 8-channel voter. There are 8 adjustment pots for the 8 audio inputs called "AUD-x". There are also 8 adjustment pots for the 8 AF-DC conversion levels called "Noise-x". You will be adjusting the "AUD"s first, then the "Noise"s. Do this for each of the 8 channels. Refer to the factory manual for the locations these test points on the PCB. For this alignment it's assumed you have the RVS-8 on the bench with a test receiver. A single test receiver can be used to set up each channel. Otherwise, the same procedure can be performed at the site, using the existing equipment (receivers). Presently, SRGs system has the voter at the MCP, which also is a shop therefore, extremely convenient for test equipment access.
Another tip, (pun intended) is to modify the test prob tip so it will "sit" in the PCBs eyelite. One of the issues not covered above is each "AUD" test point (TP) on the board is too close to the related adjustment pot, plus the fact these TP holes are not large enough for a conventional pin to be insterted, to free up a hand. The Author ground down this tip for this purpose. If you wish a much closer view of this one image click on it. It's not a perfect grind but gets the job done.
In the case of the "Noise-x" TP and pots, they are properly spaced apart for easy adjustment. Front and back views, here.
As mentioned the "AUD-x" TPs are not so friendly. Set the level for a -5 dbm; the Author used a "flat meter" or otherwise known as the H/P 3555B meter.
For the rest of operational features, the manual is adequate and correct. Happy voting!