ACR Electronics 2662 - Manual (Page 32)

3.12 Communication Cable RS232 (Sub-D 50 Socket)
Cable 2635 (NAU-B502) includes a RS232 SUB-DB9 connector for PC communication and flying leads
for connection to a Blue Sign Switch (user-provided and Single throw On/Off required.)
WARNING - DO NOT APPLY POWER TO THE SWITCH LEADS!
CH15_RxD 32
CH15_TxD 15
CH15_gnd 49
Communication
PC
RS232
SUB-DB9
3
2
5
BlueSign Switch 28
BlueSign Switch 44
28 Y1-03-0212H