Introduction
Acterna ANT-5 Page 23
WARNING: The ANT-5 must only be operated from its internal battery or from
the included PPS power supply. Ensure that the correct power supply is
connected to the appropriate ANT-5. Refer to section 1.5, 1.6 and 1.7 for further
details.
1.9.1 Battery charging
The internal NiMH battery is charged automatically when the instrument is connected
to a live external power supply. An adequate charge will be reached within 3 hours if
the instrument remains switched off whilst charging. It will automatically switch to a
trickle charge mode when fully charged or when the instrument is switched on.
Note: If the temperature of the operating environment is too high, the instrument will
automatically select trickle charge mode to avoid overheating.
Before the instrument is used for the first time it is recommended that the battery is
conditioned by running through two full discharge/recharge cycles as described in
Section 7.6.1, Battery conditioning. This procedure will also establish the initial
conditions for the battery charge indicator.
1.9.2 Low battery
When no external power supply is connected and the battery charge is getting low, the
battery LED, , above the screen will come on as a steady red light and the
instrument will emit an audible warning. As the battery gets very low the battery LED
will start to flash and further audible warnings will be emitted. An external power
supply should now be connected as the instrument will switch itself off approximately
90 seconds after the battery LED starts to flash.
1.9.3 Displaying the battery charge indicator
An on-screen display showing battery charge level is activated by selecting Battery
Level from the Tools menu. This display can be cancelled by pressing the Esc key.
Note: If the Battery Level indicator shows the warning ‘Reading may be inaccurate’,
the battery conditioning procedure described in Section 7.6.1 should be followed.
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