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Operation
Table 16 Function Channel selection
Relay activation is governed by the setting in the service module and must be determined in agreement
with the manufacturer of the music system. Possible settings are:
1. "CHANNEL CONTROL EXTERNAL: BCD"
2. "CHANNEL CONTROL EXTERNAL: DECIMAL"
3. "CHANNEL CONTROL EXTERNAL: PULSE"
External channels are selected by means of pulses at relay 1 or relay 2. Pulse duration in this case is 100
ms. If channel 1 is selected, a pulse sequence (pulse / pause duration 100 ms each) matching the number
of external channels set will be transmitted for synchronisation.
channel selected relay 4 relay 3 relay 2 relay 1
Channel 1 open open open open
Channel 2 open open open closed
Channel 3 open open closed open
Channel 4 open open closed closed
Channel 5 open closed open open
Channel 6 open closed open closed
Channel 7 open closed closed open
Channel 8 open closed closed closed
Channel 9 closed open open open
Channel 10 closed open open closed
Channel 11 closed open closed open
Channel 12 closed open closed closed
Channel 13 closed closed open open
Channel 14 closed closed open closed
Channel 15 closed closed closed open
Channel 16 closed closed closed closed
channel selected relay 4 relay 3 relay 2 relay 1
Channel 1 open open open closed
Channel 2 open open closed open
Channel 3 open closed open open
Channel 4 closed open open open
channel selected relay 4 relay 3 relay 2 relay 1
Channel 1 open open pulse sequence open
Channel UP open open open one pulse
Channel DOWN open open one pulse open
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