Troxler RoadReader Plus 3450, Manual Of Operation And Instruction

Page: 151 / 201

Appendix C–18
BATTERIES
The Model 3450 is equipped with three sets of batteries: one set of
NiCad batteries (pack of four Sub-C batteries), and two sets of AA
alkaline batteries. Each set of alkaline batteries contains three
batteries. All six alkaline batteries should be replaced together.
NOTE
Do not remove the alkaline batteries for more than one
hour. Do not attempt to operate the gauge with the
alkaline batteries removed. Loss of all project, setup,
and calibration data may result. Change the NiCad and
alkaline batteries separately to prevent data loss.
The primary batteries are the rechargeable NiCad batteries. Under
standard conditions, fully charged NiCad batteries can power the
gauge for about four weeks of average operation (150 one-minute
readings per week). Standard conditions assume that the operator
does not use the backlight or external beeper, and that the sleep
mode is set to 30 seconds.
The alkaline batteries provide backup for the NiCad batteries and
RAM. Under average operating conditions, the six alkaline batteries
should be replaced yearly.
When the NiCad batteries drop below 4 V, the gauge switches to the
alkaline batteries. The operator can finish the day’s measurements,
then recharge the NiCad batteries. In fact, the alkaline batteries can
power the gauge for about ten weeks of average operation.
However, Troxler recommends that the operator recharge the NiCad
batteries and use the alkaline batteries only as a backup. The NiCad
batteries can be fully recharged in only four hours. Note that the
backlight will not operate when the gauge is powered by the
alkaline batteries.