DETEWE OpenCom 130 Mounting And Commissioning Manual page 41

Porting of Audio Adapter
Port for
1 Ear cap,
second handset,
headset,
active speaker box or
microphone
2 Recording device; relay
contact produces sig-
nal to start and stop
recording
3 Not used on
OpenCom 130
4 Door display
Electrical data of ports
Port
Microphone,
microphone of second handset,
headset microphone
Ear cap,
loudspeaker of second handset,
headset, headset loudspeaker
Active speaker box
Installation
Socket Assignment
RJ-10 1: microphone -
(4-pin
2: speaker box +
Western
socket)
3: speaker box -
4: microphone +
Stereo jack, 1 (GND): recording
3.5 mm signal, relay contact 1
2 (peak): recording signal +
3 (ring): relay contact 1
Round power -
socket
(4 mm)
RJ-11 or 4, 5: relay contact 2
RJ-12
1, 2, 3, 6: NC
(6-pin
Western
socket)
Connection values
Electret microphone
Typical sensitivity: 10 mV/Pa
Power feed: I < 300 µA at 1.5 V
Typical impedance: 150 ±30 ohms
Typical sensitivity: 94 dB/1 mW
(0 dB = 20 µPa)
Max. output voltage: 1 V
at input impedance > 10 kohms
Accessories and Adapters
rms
39