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Galaxy Dimension Installer Manual
MUX Module
The MUX Module allows four additional audio channels to be connected. It is connected to the RS485
Audio Bus and acts as a slave module to the Audio Interface.
Each audio channel can have three standard speaker-mic devices such as the TP800 connected.
Jumper lead
RS485
termination
Engineer Header
Audio Bus
SPARE
RS485
Audio
DC Supply
from Master
+12V
or from
GND
local PSU
Addressing
The Mux Module must be given a unique address before it is connected to a power supply. This address is
selected using the 16-way Rotary address Switch (SW1). Valid addresses are 0 - 7.
Connecting the MUX Module to the Audio Interface
The MUX Module is connected to the Audio Interface via the RS485 Audio Bus. The following table shows
the connections.
NOTE: The MUX module can either be supplied with DC power from the Audio Interface or from a local
Power Supply Unit (eg Smart). See Figure 3-8.
Connecting Microphones and Speakers
The MUX module is connected to microphones and speakers as per the Audio Interface. See table 3-8.
GND
Figure 3-8. Mux Module PCB
Audio Interface
RS485 Bus
GND
Audio A
Audio B
Table 3-10. Mux Connections
Audio Control (cont'd)
Audio Expansion
Off-wall Tamper
Header (for future
Fuse for
microswitch
product development)
+4.5V
Rotary
Address
Switch
SW1
MUX RS485
Audio Bus
GND
Audio A
Audio B
3-15
CMD 4
TMP 4
SPK 4
MIC 4
GND
+4.5V
CMD 3
TMP 3
SPK 3
MIC 3
Audi Channel
Terminals (4)
CMD 2
TMP 2
SPK 2
MIC 3
GND
+4.5V
CMD 1
TMP 1
SPK 1
MIC 1
Diagnostic
LED's
- Quick Links:
- Pcb Layout
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