Siemens HiPath 3000 Series, Service Documentation

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HiPath 3000/5000 V9, Service documentation
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optiPoint 500
10.5.3.4 optiPoint acoustic adapter
The optiPoint acoustic adapter is used for connecting
●
a headset (121 TR 9-5) (see Section 10.8.2)
●
an active loudspeaker box and a desk microphone via the Y cable
●
busy display/door opener and secondary bell/light paging, etc. (each with its own power
supply) via floating contacts (not supported when using the adapter on optiPoint 410 and
optiPoint 420).
Notes on the optiPoint acoustic adapter
●
Section 10.5.4 contains details on a possible additional external power supply.
●
The internal components of the optiPoint terminal are deactivated in speakerphone mode
if an external microphone and an external loudspeaker are used (sense lead).
●
optiPoint 500 basic does not support the connection of an external microphone to the op-
tiPoint acoustic adapter.
●
The speakerphone mode selection is independent of whether the internal or an external
speakerphone is used. External speakerphones have precedence over internal speaker-
phones with the exception of manual intercom and signaling procedures.
●
The internal microphone, the transmitter inset and any microphone connected to the opti-
Point acoustic adapter are muted in the “Mute” audio state.
Figure 10-49 optiPoint acoustic adapter
Assignment of the three connection jacks:
1 Connecting a headset with the following electrical
values (121 TR 9-5):
●
Microphone (electret interface):
–
max. power: 400 µA,
– supply voltage: 5 V ± 10%
– series resistor: 5 k
Ω
± 10%
●
Acoustic transformer:
–
Impedance: 150
Ω
± 10%
– EBD: 13 dB ± 2.5 dB
2 Connecting a loudspeaker and microphone using Y
cable (see Figure 10-50)
3 Floating contacts (see Table 10-7), load capacity of
max. 5 W at 24 Vac or 60 VDC
3 1 2