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138 ProMark2 User’s Guide
again unless you turn off the receiver and turn it back on.
Extreme Low Power
The Extreme Low Power alarm, Figure 4.28, appears when the receiver feels it can no longer
guarantee continued, uninterrupted operation. At the appearance of this alarm, the receiver
closes the active survey data file and shuts down after 10 seconds.
Figure 4.27 Low Battery Alarm
Figure 4.28 Extreme Low Power Alarm