User Guide

After Sales
Technical Documentation
Desktop Charger CHH–6
Page 10 Original, 11/94
Environmental Conditions
Temperature Conditions
Table 11. Allowed Ambient Temperature (functional)
ENVIRONMENTAL PARAMETER VALUE
Low air temperature + 5°C
High air temperature +45°C
Table 12. Allowed Ambient Temperature (transportation and storage)
ENVIRONMENTAL PARAMETER VALUE
Low air temperature –40°C
High air temperature in unventilated enclosures 1) +85°C
High air temperature in ventilated enclosures or outdoor air +40°C
The high temperature also includes the effect of solar radiation through a
window or other opening and heat radiation.
Warnings and Restrictions
Operation with the LCH–2 Cigarrette Lighter Charger is possible but not
recommended because of confusing operation of the LCH–2 charge LED.
It is not possible to use the Desktop Charger with the Travel Charger
(ACH–3).
Functional Description
The Desktop Charger consists of microcomputer based control logic for
spare battery charging and discharging.
Charging is controlled by processor D1. Processor D1 is a single–chip
type controller incorporating RAM, ROM, A/D converter, and a
multifunction timer/counter.
Table 13. Processor Input/Output Signals:
SIGNAL NAME NOTES
PA0 Phone LED control, green: ”1”
PA1 Phone LED control, red: ”1”
PA2 Spare battery LED control, green: ”1”
PA3 Spare battery LED control, red: ”1”
PA4/DBIN Discharge button input,
”0”: start discharge