Newcon Optik LRB 3000PRO - Manual (Page 14)

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 Standard 9V battery may be used as a short term
solution. It will last for about 30-45 minutes of
continuous operation.
 A 9V Lithium non-magnetic battery guarantees over
5,000 shots at room temperature. It is recommended for
the field usage. In addition, this battery does not
influence the internal compass.
Note: Metal housing of the battery may degrade the compass
accuracy.
Measurement procedure
The LRB 3000PRO operational procedures are design to allow
the user to use most applicable options in the fastest time
possible. To activate it, press and hold Action button (6, Fig.1)
for one second. At start the unit comes into Ready to Measure
mode indicated by the word ‘READY’ on the display visible
through the eyepiece.
Pressing Action button (6, Fig. 1) again will initiate
measurement procedure. The results of measurement are
displayed in default form of Distance (M) and Azimuth (mils)
measurement parameters, which also can be modified to user
preference (see
Operation and service modes ).
If results of measurement are unreliable four dashes (‘----‘) will
be displayed in the area (4, Fig. 3). For successful measurement
the target must be at least 10m away.
Pressing Mode button (3, Fig. 1) gives the user the options to
change settings from Factory default to specific modes required