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Commander Installation Guide
Page 44 of 81 Trilogy Communications Limited
Issue 9
Headset - 5 Pin XLR Fixed Socket (front
panel)
Pin Function
1 Mic IN (Screen)
2 Mic IN
3 Headset Gnd
4 Headset Out
5 Headset Out
Foot Switch - D9 Fixed Socket
Pin Function
1 Foot Switch Input
2 No Connection
3 Chassis Ground
4 No Connection
5 No Connection
6 Ground
7 No Connection
8 No Connection
9 No Connection
GPIO (Local logic in and out) - D9 Fixed Socket
Pin Function Notes
1 Ground
2 Logic Input 1
3 Logic Input 2
4 Logic 2 Out Common
5 Internal +5V (Out) Protected with series 44R & 1N4002 diode.
6 Logic Output 1
7 Logic 1 Out Common
8 Logic Output 2
9 Logic Input +VCC NB Pin 9 may be driven by external voltage (With dropper
resistor if greater than 5V), or by internal +5V via pin 5.
Audio I/O – D15 Fixed Socket
Pin Function Notes
1 Slave Mic Input Line level, un-balanced
2 +15V Out (for slave mic panel) NOT protected!
3 Clean Mic Out + Line level, balanced, pair with 11
4 Ext CUT Input (for slave mic panel) Parallel function to front panel Cut
Switch. Ground to activate
5 Chassis Ground
6 No connection
7 External Input to LS Amp - Line level, balanced, pair with 14
8 Matrix Audio Input to Panel / parallel output - Line level, balanced, pair with 15
9 Ext Mic Cut output (to slave panel) Normally grounded. O/P is open
circuit when front panel cut selected.
10 -15V Out (for Slave mic panel) NOT protected
11 Clean Mic Out - Line level, balanced, pair with 3
12 Mic Ground
13 Loudspeaker Output 8 ohm loudspeaker
14 External Input to LS Amp + Line level, balanced, pair with 7
15 Matrix Audio Input to Panel / parallel output + Line level, balanced, pair with 8
NB 15V supplies are also used to derive 12V for panel. (Thermally Fused @ 0.7A)