Viavi T-BERD 4000 Base Unit User Manual page 37

Charging
If the instrument is fitted with a battery, on connection to the mains:
– if the user does not press
case, the Charge indicator will be lit in red.
– when the user presses the
battery will charge during use (Charge indicator in solid red).
Once the battery is fully charged, the Charge indicator lamp is solid
green.
When the Charge indicator is blinking red, this mean the power supply is
not compatible with the battery used. Charge is disabled.
It is essential to wait until charging is complete to ensure maximum
independent operating time, which may otherwise be considerably
reduced.
Voltage must be superior to 14V to correctly charge the 9 cells battery
(11V).
Only the 6 cells battery can be charged using the cigarette lighter adapter
(provided on option). When this adapter is used with a 9 cells battery, the
equipment can be used but the battery will not be charged (except if the
vehicle is started).
Battery charging time
If the battery is completely discharged, the time taken to recharge is:
– approximately 5.5 hours, if the apparatus is not in use (Charge indi-
cator solid red)
– about 12 hours if the instrument is used during charging (Charge
indicator lit in solid red).
Battery endurance
A 6 cells battery is only guaranteed to deliver 20W and a 9 cells battery
30W, at ambient temperature. During discharge, battery increases its
temperature.
Above 20W/30W at ambient temperature, the message Battery too
hot, please turn power off may be displayed on the screen,
inviting the user to shut off the equipment.
The user may or may not shutt off the product but the product may shut
off later by itself, without warning.
User Manual 77000000206 Rev. 007
O
, the battery will start the charge. In this
N
O
key, the instrument starts up and the
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Chapter 2 Starting up
Battery management
15