BSS Audio BLU-50 Install Guide - Manual (Page 15)

9
Opto Output
In addition to the six standard LOGIC OUTPUTS, there is an isolated output, which fails safe (open circuit) if the
unit becomes faulty�
switch
2-wire mode
relay
LED
relay
3600R
1800R
1200R
unconnected
ladder
+supply voltage
47kOhm
log
potentiometer
10K-100kOhm
linear
potentiometer
switch
1k
1k
1k
ladder
1k
ground
4k7
3-wire mode
470R