Controls And Indicators, Terminals And Connectors - Valcom V-5328020 Installation And Use Manual

Controls and Indicators, Terminals and Connectors

Figure 9. AmpliCenter Controls and Indicators, Terminals and Connectors
Table 2. Controls and Indicators, Terminals and Connectors
1. AC Power in: 105 - 120 VAC, 210-240 VAC, 5OW Hz, (voltage auto-selectable within unit).
2. 0 dBm out, an auxiliary output that differs from the main 70.7V output in that it is a low level
(0 dB), 600 ohm balanced output used for driving a remote or off-premises amplifier.
3. DC Power, and 70V audio out to Controller (used only if Controller is also installed).
4. Low frequency cut-off screw-type adjustment pot. Attenuates low frequencies so that horns and small
speakers are not overdriven by excessive bass energy. Cut off frequency is adjustable from 50 Hz (full
CCW) to 400 Hz (full CCW).
5. Music In: left and/or right channels with ground.
Paging In: redundant paging input (ground, C1, tip, and ring).
70V Out: Balanced output used for terminating the loudspeaker wiring.
6. Screw adjustable potentiometers: VOX sensitivity level, Music ducking (mute level for music during
voice page). Music level for various music sources.
7. LEDs:
8. Telephone system mode switch: dry loop 600 ohms, dry loop Hi Z, ground start, or loop start.
9. Page input from host telephone system or Controller RJ11 connector: paging audio and control.
Figure 9 shows the controls and indicators, terminals and connectors on the rear
panel of the AmpliCenter. Table 2 identifies them by function.
TO
CONTROLLER
0 dBm
UNIT
OUT
Green - power on, lights when AC line voltage is applied to AmpliCenter.
Red - overload, lights when the AmpliCenter output exceeds its output power rating. This
can occur when total speaker load is greater than the output rating, or when speaker wiring
is shorted.
Red - unbalanced output, indicates when one speaker lead is accidentally shorted to ground.
Green - page accessed, lights when voice paging is active.
7
PAGING IN MUSIC IN
70V OUT
LOW FREQ
CUT-OFF
+
-
C1
PAGE
INPUT
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