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CABLE FUNCTIONS
POS (RED) 13.8 VDC - May measure from 11V to 13.8V with respect to 0V
depending on voltage drop due to cable length.
NEG (BLACK) 0 VDC
TC TIMER CONTROL - Holds receiving stations on line for period controlled
by initiating station. Normally low. Goes high when
(SHIELDED GREY) chime activated or call initiated from any station.
Stays high until chime or call is reset.
VLC VOLTAGE LEVEL CONTROL - Carries different voltage levels generated
by initiating station to allow targeting of calls
(SHIELDED YELLOW) etc. Voltage is present for duration of button
press or chime activation.
COM1 (WHITE)
COMMUNICATION LINES - Carries balanced audio signal for Chimes,
Private Calls & Paging Calls.
COM2 (BLUE)
MUS1 (GREEN)
MUSIC/ MONITOR LINES - Carries balanced audio signal for Music
and Monitoring.
MUS2 (ORANGE)
AUX AUXILIARY OUTPUT CONTROL - Carries different voltage levels generated
at initiating station, to control specific
(SINGLE CORE) outputs on Auxiliary Output boards.
NOTE: Shielded cable recommended for TC and VLC Lines to prevent spikes caused
by rising and falling control signals being induced onto audio lines.
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