Sokkia RADIAN IS, Operation Manual

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Using the Radian IS Chapter 4
RADIAN™IS 31
4.1.7 Insufficient power
If either the internal batteries or the external power input
voltage are below minimum operating parameters (in other
words, if the Radian IS experiences drained batteries or power
failure) the Radian IS will turn off and become inactive.
If this happens, the Radian IS will not be able to turn back on
until proper power is restored.
In the event of power failure, the Radian IS power output is
disabled on both COM ports and the Radian IS will not resume
operations for COM activity or even if the power button is
pressed.
To return to normal operation, charge the internal batteries or
connect a valid external power input to the Radian IS. When
sufficient power is resumed, the COM ports will provide power
(if they did before the power failure), and the system will
automatically turn on when it detects COM activity or if the
power button is pressed.
4.2 Display Panel Operations
The following sections explain the operation of the options on
the Radian IS display panel.
4.2.1 Power button
CAUTION
The Radian IS may also become inactive if the external power
input is greater than the power specified. See Section 1.7,
Radian IS Usage Cautions, Page 9 for more information.