Connector Xin Signals; Microphone; Speaker; Hook - Benefon SIGMA GOLD TDP-52-SN3 Service Manual

7.4.3 Connector XIN Signals

1
2
3
4

7.4.4 Microphone

Sensitivity:
Vendor and part no:
RF decoupling capacitor:

7.4.5 Speaker

Sensitivity
Vendor and part no:
Impedance:
Resistance (DC):

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:
ON_HOOK
OFF_HOOK
8HDS50GB_fm5.f
ERP
GND
GND
MIC
-43 dB ± 6 dB
Hosiden KUC2023 or KUB2023
33 pF; Size: 0805; Mounted on the microphone
element.
95 dB ± 5 dB
Hosiden KDR0928-IE-0030
min 120 ohm
max 3 kohm
HIGH DC IMPEDANCE (SWITCH OPEN)
LOW DC IMPEDANCE (SWITCH CLOSED), 2.2 KOHM RESIS-
TANCE
Product: HDS-50 (Ext. Handset With Cradle) /
27.1.1999
earphone input, HOOK state
ground
ground
microphone output
38