User Guide

NHB–3
Technical Documentation
PAMS
HF Desktop Charger CHH–8P
Original 26/97 Page 8
Technical Specifications
Modes of Operation
Power off mode: If the unit doesn’t receive power supply to the d.c.
connector there isn’t any voltage on the module.
Standby mode: The unit receives supply voltage to the d.c. connector.
The processor is running but because there isn’t any
phone or spare battery on the cradle, the charger is off
and the audio functions are inactive.
Active mode: The telephone or spare battery is on the cradle so the
charging functions are active. Normally the handsfree
speaker is muted. During a call and during the key
beeps or alarming tones the speaker and corresponding
audio switches are open.
External/Internal Signals and Connections
The charger has four external and three internal connectors, the AC fast char-
ger connector, the spare battery connector, phone system connector, the data
accessory connector, internal system connector, internal speaker connector
and internal microphone connector.
AC Fast Charger Connector X100
Pin: Line: Function:
1 VDC Supply voltage
2 DGND Power supply ground
Spare Battery Connector X101
Pin: Line: Function:
1, 2, 3 GND Supply power ground
4 BTEMP Battery temperature sensing
5 BSI Battery size identification
6, 7, 8 VBAT Charging voltage