LAN IN
EMC
IN
AUX
IN
LINE
OUT
COM
HOT
INPUT
EMCCOM HOT
OUTPUT
OUTPUT
100V
-
+
INPUT
100V
-
+
MUTE
SHORT
IN
BACKUP
AMPLIFIER
INPUT
THREE-WIRE OVERRIDE
MAIN
AMPLIFIER
OUTPUT
4. NOMENCLATURE AND FUCTIONS
4.2 Rear panel
7
1. AC power input;
2. Case grounding pole;
3. The 100V input port of the standby amplifier is connected to the 100V output terminal of the
amplifier;
4. The 100V signal output port of the amplifier can be connected to an external 100V constant voltage
speaker;
5. The input port of the three-wire alarm override amplifier is connected to the output end of the
amplifier;
6. Three-wire override alarm interface, connect to external three-wire volume controller;
7. Short-circuit signal input port; used to trigger preset voice prompts (or alarms), and can also be
used to control access control linkage input short circuit signal
8. The silent potentiometer, when rotated to the rightmost, the mute intensity is the largest, and vice
versa.
9. AUX IN — audio source input, unbalanced connection port;
10. EMC—emergency alarm music signal input, once a signal is input to this port, the machine will
automatically play the music signal of this channel first;
11. LINE OUT—2-channel line outputs, unbalanced connection port;
12. LAN IN—The network cable connects to the Ethernet port/switch.
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8
9
10
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※ Instruction for using the backup function:
1. Power-off backup function: When the device is powered off, it will automatically switch to the
100V backup input channel.
2. Disconnected network backup function. To realize this function, two conditions need to be met:
① There is no signal input locally (such as AUN IN/EMC/MIC, etc.);
②The machine is in a disconnected state.
When the above conditions are met, the machine will automatically switch to the 100V backup
input channel.
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