2.3 INPUTS AND OUTPUTS
2.3.1 MIC
It allows the connection of an external dynamic microphone. More precisely, this input is a
3.5mm (1/4 ") mini-jack input.
This input has three terminals for the connection of an unbalanced mono input signal, where one
of the terminals has no connection.
The connection is made through a male mini-jack type connector with 3 contacts of 1/4 ".
Mark
Description
Type
Signs
Activation
1
Audio signal unbalanced
Input
+
Configuration (see 4.4.3)
2
No connected
NC
3
GND
Input
┴
Table 1: Input External microphone
2.3.2 INPUT / OUTPUT FOR PUBLIC ADDRESS AND VOICE ALARM SYSTEM (“ACSI” LOOP)
The equipment has two connections for distributed elements in Public Address systems. It
consists of a line level audio input plus control signals for connecting up to 8 devices in 'daisy
chain' bus, where each device is connected to the next. Both connections are identical and
interconnected. The ACSI bus supplies remote power to the equipment, see chapter 4
The connection is done through a standard Ethernet T568B cable. Maximum connection
distance for all the bus is 1000m (3280ft).
Mark
Description
Type
Signals Activation
ACSI
BUS
Line level balanced audio.
Control and power bus.
Input
Protocol
N/A
Table 2:Bus ACSI connection
NOTE: This connection is not compatible with standard ethernet.
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Picture 3: Inputs and Outputs
