5
VMA 191
Part N
o
: 9228.8x/ .9x
Audio/ Video Modulator
A/V
→
ATV (AM)
A
LINE
5.4 Rear view
5.5 9-pin D-SUB connector configuration (alarm contact)
5.6 Audio socket
Pin assignment
External control of the audio mode
9228.82/ .91/ .92:
9228.85:
Mono
Pins 6/ 8: Connection open
Mono L
Pins 6/ 8: Connection open
Pins 7/ 8: Connection closed
Pins 7/ 8: Connection closed
or
Stereo
Pins 6/ 8: Connection closed
Pins 6/ 8: Connection closed
Pins 7/ 8: Connection open
Pins 7/ 8: Connection closed
or
Dual
Pins 6/ 8: Connection closed
Pins 6/ 8: Connection open
Pins 7/ 8: Connection closed
Pins 7/ 8: Connection open
or
Pins 6/ 8: Connection open
Mono L+R
Pins 6/ 8: Connection closed
Pins 7/ 8: Connection open
Pins 7/ 8: Connection open
1 2 3 4 5
6 7 8 9
Alarm active:
Pin 8 and Pin 9 are closed
Pin 8 and Pin 7 are open
Normal operation
Pin 8 and Pin 9 are open
Pin 8 and Pin 7 are closed
FUSE OF DEVICE ALARM LAN / WAN
POWER
FACTORY SET RF-OUT AUDIO-IN VIDEO-IN IF-IN IF-OUT
1 stereo left+ / dual A+ / mono+
2 screening / earth
3 stereo right+ / dual B+
4 stereo left- / dual A- / mono-
5 stereo right- / dual B-
6 control line contact 1
7 control line contact 2
8 control line return path (earth)
5 3 7
4 1 6
8
2
