Partyline: Why does the MS-702 have 3-pin XLR outputs and the RS-602 have 6-pin inputs?

Question:  Why does the MS-702 ch A/B have 3-pin XLR outputs when the RS-602 have 6-pin inputs? We are purchasing this system for camera operators, but do not understand why there is no 6-pin output on the main station. What are the purposes to have three XLR outputs - do they each supply a separate RS-602 with all the call features available on the front of the MS-702?

Answer:  The reason why the MS-702 has 3-pin XLR outputs……
Normally the MS-702 would be for a Director/Stage Manager’s position so he can access both channels/ “both production groups”.
Channel A would be for the Sound crew and Channel B would be for the Lighting crew.
The sound guys and the lighting guys would normally be using RS-601 single channel Belt Packs
These single channel Belt Packs would be 3-pin XLR
Hence two separate channels as normally the sound guys don’t need communications with the lighting crew guys……….
People that would need to access BOTH channels (i.e. Floor Manager in video) would use a 2 Channel Belt Pack (the RS-602) to have the same channel access as the Stage Manager/Director (MS-702). To connect the RS-602 to a MS-702 so that it can access both channels you will need a YC-36 cable (the YC-36 adapter cable has 2x XLR-3 connectors and 1x XLR-6 connector)
Now doing film….. what are the channel assignments of the MS-702?
I have seen
MS-702 Channel Assignment:
Channel A = Production Party-line
Channel B = Program Channel
From the Belt Pack aspect:
Channel A would be for talking to the Production Crew and
Channel B would be the Program Audio of the shoot (Channel B would be a “Listen Only” channel)
Another configuration could be
MS-702 Channel Assignment
Channel A = Production Party-line A group
Channel B = Production Party-line B group
Program Audio would be feed to each RS-602 Individually
From the Belt Pack aspect:
Channel A = Production Party-line A Group
Channel B = Production Party-line B Group
And you could feed program individually to each beltpack (via pins 5 and 6 of the 6pin XLR)
Controlling the Program Level with the little knob on the bottom of the RS-602.
The YC-36 Does Not have the individual Program Input option
(need to add a cable to the YC-36 for individual Program Input, stock YC-36 is only Channel A and Channel B)
Another way you can get Program audio to people is to feed the Program Audio into the Program Input of the MS-702 and feed that signal to one of the Intercom Channels and set a Ratio of Program Audio vs “Intercom Chatter”
(this program would then feed to everyone connected to that channel, but Not individually adjustable at the Belt Pack)

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