Bird Technologies AT-500-Manual - Manual (Page 58)

Bird AT-500 Antenna Tester
40
Fully charged batteries will provide a minimum of 2
hours continuous operation with the backlight on.
Charging time is typically 8 hours. The batteries are
being charged when the Antenna Tester is connected to
AC, with the AC mains adapter, or DC, with the auto-
mobile cigarette lighter adapter. The unit does not have
to be on to charge the batteries.
Note:
For optimum battery life, charge the
batteries only after the low battery indication is
displayed.
Batteries and Long Term Storage
Do not store the instrument for long periods of time
without recharging the batteries. When the instru-
ment is stored for long periods of time without use, the
batteries will loose their charge and also loose the abil-
ity to reach full charge when put into service. To
restore the battery charge, perform a full charge for 8
hours. If the batteries are not fully charged after eight
hours, completely discharge the batteries then per-
form a full charge again. If necessary, repeat this dis-
charge and charge cycle up to three times. If the
batteries do not remain charged after three discharge-
charge cycles, replace the batteries.
CAUTION
Follow guidelines for battery charging.
Avoid constant charging of batteries for long periods
of time. Overcharging can result in reduced battery
efficiency, service life, and possible permanent
damage.
CAUTION
If subjected to an ESD spike directly to the metal
portion of the case the unit may go into an
interrogative state. A power cycle of the unit may be
required to return to normal operation. See “Power
On/Off” on page 9.