T&D TR-81 User Manual - Replacing The Battery
12
Getting Ready
Replacing the Battery
Time to change the battery
* Once the BAT lamp appears on the display make sure to change the battery as
soon as possible. If you change the battery before the BAT lamp begins to blink,
recording will continue uninterrupted and without any loss of data.
* If the batteries go completely dead, all recorded data and recording settings will
be lost, so please be attentive to the BAT lamp.
* The following chart can give you a general idea as to battery life.
Recording Int. of more than 2 sec’
s
Recording Int. of 1 second
Time before BAT lamp (warning) appears.
Maximum 8 months
Maximum 5 months
- The main unit can remain in working condition for about 2 minutes without a battery.
- Battery life depends on many conditions including the recording environment, the recording interval, the amount
of communication, the surrounding temperature, and others. This explanation is based on using a new battery
and in no way should be taken as a guarantee of battery life.
After changing the battery
* If you changed the battery when the BAT lamp was on.
Change battery
Returns to same condition as before lamp
appeared. Recording continues without
trouble.
* If you changed the battery when the BAT lamp was blinking.
Change battery
The power automatically goes off. Make
sure to turn back on.
Note:
If the BAT lamp is blinking make sure to download all data as soon as possible. If you press the [REC/
STOP] button on the main unit a new recording session will begin and all previously recorded data will
be automatically deleted.