Interfacing Rm-Hp250Au With Common Intercom System - JVC GY-HD250U Reference Manual

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Interfacing RM-HP250AU with common Intercom system

The RM-HP250AU can be connected either a two wire balanced or two wire unbalanced intercom system. The table below
lists common intercom systems, audio type (balanced or unbalanced), system impedance and manufacture.
Intercom System
TM
RTS
Clear-Com
Audiocom®
The RM-HP250AU has three terminals that are used to interface with balanced and unbalanced two wire audio intercom
systems. These terminals are labeled G (ground) C (cold) H (hot).
The table below shows the signals carried on the 3 pin XLR microphone cables used by the most common intercom system
providers.
Pin # RTS
Pin-1 GND
CH1 Unbalanced Audio
Pin-2
+ DC Power (+30V)
Pin-3 CH2 Unbalanced Audio
Audio type
Unbalanced
Unbalanced
Balanced
RM-HP250AU REAR PANEL
TM
Clear-Com
GND
DC Power (+30V)
Unbalanced Audio
Termination Spec
200Ω
Telex Communications, Inc.
200Ω
Clear-Com Intercom Systems
300Ω
Telex Communications, Inc.
Audiocom®
GND
Balanced Audio(C)
+ DC Power
Balanced Audio(H)
+ DC Power
Manufacturer
1 2
3
XLR-3pin Male
(on Cable)
Version 1.12
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