1 4. Back-up Power
1 With power supplied directly from the car battery, the micro computer continues operating even when the power
switch is OFF. Current drain is very low. approximately 25 mA.
2 If you wish to retain the memories even when moving the unit between the car and the fixed station, utilize a battery
back-up system. Otherwise, all the memories are cleared when the power cord is disconnected.
(1)
Use four AA NiCad batteries, available Locally.
(2)
Open the lower cover of the transceiver.
(3)
Install the batteries into the battery case located on the left
side. making sure that polarity is correct.
(4)
The batteries are charged when the power switch is turned
ON.
Charging current is about 30 mA. The battery back-up function
operates only when the power cord is disconnected.
3. Back-up is available for about 3 to 5 days. To extend the
back-up period, connect the (optional) BC-1 to the external
back-up terminal.
Note:
1. Employ the same brand batteries in the same charge condition.
2. Take the batteries away if you don't use them for a long period.
Fig. 1-4 Battery Back-up
