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Duality Installation Guide
C – Connector Pinouts Appendices
Centre section Connectors – Continued
RED LIGHT / TALKBACK / GPI/O
Location: Center section Rear Panel – Lower
Connector Type: 25-way D-type female
Pin Description Notes
1 Red Light Relay contact 'A' Normally open – follows Red Light switch
14 Red Light Relay contact 'B'
2 0V
15 GP Input 1 Not used
3 GP Input 2 (not used)
16 Monitor Cut Forces Cut when active
4 Monitor Dim Forces Dim when active
17 Slate Switch
5 Listen Switch
18 Red Light Switch
6 TB All Switch
19 FB A Switch
7 FB B Switch
20 Ext TB Switch
8 +4V Max current 200mA (fused)
21 Slate Tally
9 Listen Tally
22 Red Light Tally
10 TB All Tally
23 FB A Tally
11 FB B Tally
24 Ext TB Tally
12 n/c
25 n/c
13 n/c
Serial 1 & 2
Location: Center section Rear Panel – Lower
Connector Type: 9-way D-type Male
Pin Description Notes
1 0V Connector case connected to chassis
6 0V
2 Tx Data
7 0V
3 Rx Data
8 n/c
4 n/c
9 n/c
5 0V
Notes:
1. Inputs are active low (connect to 0V to activate).
Inputs are pulled high to +4V via an internal 3k9Ω resistor and are diode clamped high and low.
2. Tally outputs are open-collector pull down with series 47Ω resistor.