Clear-Com CS-702 - Manual (Page 22)

C S - 7 0 2 T W O - C H A N N E L M A I N S T A T I O N 2 - 6
INTERCONNECTION SETUP
After determining system configuration and channel assignment, pick a
location for the CS-702; it can be anywhere as long as it is provided with a
source of AC power.
1. Use standard shielded mic cable (refer to the section “Cable
Considerations”). Always avoid sharp bends in the cabling; allow at
least 3 in. (7.62 cm) behind rack-mount units for cable extending from
rear panels.
2. Route all cables from the main station to the remote stations. Pin
assignments on all 3-pin intercom connectors are:
Pin #1 --- Common
Pin #2 --- DC Power
Pin #3 --- Intercom audio
3. Route cables away from heavy AC power sources, such as lighting
panels, electric motors, or power transformers.
4. In permanent installations, be sure to install the system in accordance
with approved local building code.
5. If program monitoring is required, connect the external signal to the
program input (3-pin female) connector on the CS-702 rear panel. The
station operator can hear the program in the headset mixed with intercom
activity or the program can be sent to either intercom line. The program
pre-amp’s gain is switch-selectable (on the rear panel) for either mic level
or line-level and the input is balanced.
6. If the stage announce function is to be used, connect to the announce
output (3-pin male XLR) connector on the CS-702 rear panel and the
output is transformer balanced. If the output is to be used as an
unbalanced source, connect one side to common (pin #2 to pin #1).
If the Stage Announce relay is to be used, connect to the appropriate
screw-lug terminals (N/O or N/C) depending on what action is needed for
the external equipment to be controlled. The relay is a Form C (break
before make) contact.
Note: The contact rating of the relays is 1 ampere resistive at 24 VDC or
0.5 ampere(s) resistive at 120 VAC.
7. Turn on power switch on the rear panel. The call buttons illuminate blue
when the unit is initially turned on and receiving power. Plug in a headset,
and set intercom, program, and sidetone levels as desired.
HEADSETS
The following is a description of a recommended headset:
Mic Type --- Dynamic; see technical specifications for details.
Wiring:
Pin #1 --- Mic common
Pin #2 --- Mic hot