Denso BHT-400B-CE - Manual (Page 118)

Backup Battery Discharge Counter
On the System Properties window, pressing the 0 key with the SF key
held down calls up the screen shown at left.
This screen displays the discharge count of the backup battery.
If you replace the backup battery, tap the Reset button to reset the
discharge counter to zero.
Only after the discharge count reaches 200, the counter can be
reset to zero.
ActiveSync automatic connection
On the System Properties window, pressing the 1 key with the SF key
held down calls up the screen shown at left.
On the ActiveSync page, select “Infrared” or “USB” in the “Automatic
Connection” group box.
Infrared: Turns on automatic connection via the infrared port
USB: Turns on automatic connection via the USB port
Tapping the OK button validates the setting.
Automatic connection is disabled by default.
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