3 connector xin signals, 4 microphone, 5 speaker – SIGMA BENEFON TDP-52-SN3 User Manual
Page 127: 6 hook, 3 connector xin signals - 38, 5 speaker - 38, 6 hook - 38
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27.1.1999
8HDS50GB_fm5.f
38
Product: HDS-50 (Ext. Handset With Cradle) /
7.4.3 Connector XIN Signals
7.4.4 Microphone
7.4.5 Speaker
7.4.6 Hook
The hook operation is done by use of a reed switch. Hook operation is connected to
the handset earphone terminal.
The operation is as follows:
1
ERP
earphone input, HOOK state
2
GND
ground
3
GND
ground
4
MIC
microphone output
Sensitivity:
-43 dB ± 6 dB
Vendor and part no:
Hosiden KUC2023 or KUB2023
RF decoupling capacitor:
33 pF; Size: 0805; Mounted on the microphone
element.
Sensitivity
95 dB ± 5 dB
Vendor and part no:
Hosiden KDR0928-IE-0030
Impedance:
min 120 ohm
Resistance (DC):
max 3 kohm
ON_HOOK
HIGH DC IMPEDANCE (SWITCH OPEN)
OFF_HOOK
LOW DC IMPEDANCE (SWITCH CLOSED), 2.2 KOHM RESIS-
TANCE
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