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Page A-76
G900X/G950 Installation and Maintenance Manual – Pinouts
Revision D
190-00719-00
A.8.3 Serial
Data
A.8.3.1 RS-232
Pin Name
Connector
Pin
I/O
RS-232 OUT 1
P4751
1
Out
RS-232 IN 1
P4751
2
In
RS-232 OUT 2
P4751
3
Out
RS-232 IN 2
P4751
4
In
The RS-232 outputs conform to EIA Standard RS-232C with an output voltage swing of at least ±5V
when driving a standard RS-232 load.
A.8.4 Lighting
Pin Name
Connector
Pin
I/O
LIGHTING BUS HI
P4751
11
In
LIGHTING BUS LO
P4751
12
In
The GCU 476 can be configured to track a 28 VDC, 14 VDC, 5 VDC, or 5 VAC lighting bus using these
inputs. The GCU 476 can also automatically adjust for ambient lighting conditions based on photocell
input.