ARM Electronics C4TMX - Manual (Page 8)

Rear Panel Definition
1~4 : Camera Input Port
5~8 : Camera Looping
9 : VCR S-VHS OUT (S-Video)
10 : VCR S-VHS IN (S-Video)
11 : VCR IN (BNC)
12 : VCR OUT (BNC)
13 : Main Monitor (BNC)
14 : Remote Control – RS232 Port (DB-9)
15 : Alarm Port (DB-9)
16 : 5V DC Power Input
17 : CH1~CH4 75 Ohm switcher
6
OFF - Looping out
ON - No Looping out