Grass Valley Adder II - Manual (Page 25)

21
Adder II
User Guide
Intercom Modules
The 882i Intercom module can house up to 4 ADDR-AUX modules:
• Balanced 4-wire
• Clear-Com 2-wire
• RTS/Telex compatible 2-wire
Fig. 2-22: 882i Intercom Modules
Intercoms can be of any type in any location in the assembly. However, for proper operation
of the intercom channels, the same placement order must be followed at the other side of
the system. A 2-wire system can be interconnected with a 4-wire system at another Adder
II, but not all intercom functions will work (for example, calling).
4-wire (balanced)
4-wire Auxiliary (balanced) intercoms use an individual 5-pin XLR on each of the two
channels in each module (see
Figure 2-21 ). XLR pin functions are given in the following
table. Intercom Module Gain is 0 dB.
Fig. 2-23: Intercom Module: 4-Wire Auxiliary (balanced)
PIN FUNCTION IMPEDENCE SIGNALS
1 Ground
2 Input (+) 600 Ohm input Line: +8 dBm
3 Input (-) 600 Ohm input Mic: -32 dBm
4 Out (+) >=600 Ohm load +8 dBm
5 Out (-) >=600 Ohm load +8 dBm