15
NOTE:
When using a Clear-Com external power supply, pin 3 termination must
be lifted on the power supply to prevent motor-boating.
Clear-Com operations are optimized by the use of the front panel adjustments
shown in Figure 9 and listed below:
• Input Gain, ±10 dB
• Output Gain, ±10 dB
• Null
Switches are also provided for:
•Dry/unpowered (d), or Wet/powered (w) PORTS
•200 Ohm on or off terminations TERM
Figure 9: Clear-Com 2-Wire intercom Module
The Telecast Clear-Com interface is compatible with powered and unpowered
belt packs as well as fixed equipment. You may power 5 to10 belt packs with
each intercom module from theViper’s internal power supply. Many more belt
packs can be added if powered externally. Refer to your intercom manufacturer’s
documentation for additional system details.
For operation with a belt pack, set the PORTS to w (wet/powered), the TERM to
ON and then center each of the INPUT gain, OUTPUT gain and NULL controls.
Re-adjust these controls to optimize performance as required.
RTS/Telex
RTS modules provide one two-channel intercom on a single 3-pin XLR
connector. This Telecast module fully supports the RTS signaling protocol and
signal levels.
RTS operations are optimized by the use of front panel adjustments as shown in
Figure 10 and listed below.
• Input Gain, ± 10 dB
• Output Gain, ± 10 dB
• Null
