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7. PREPARING FOR USE
7.1. Choose an observation post.
7.2. Rotate the objective frame to bring the reticle to sharp focus.
7.3. Check the battery voltage and the rangefinder before
operation.
7.3.1. To analyze the battery voltage, set the ON-OFF selector
switch to the ON position and check if the Low Battery indicator
glows red in the left-hand eyepiece. If it does, replace the
battery.
SET SELECTOR TO OFF BEFORE REPLACING THE
BATTERY!
7.3.2. To check the rangefinder for proper functioning, proceed
as follows:
- Aim the rangefinder on the target with known distance to it;
- Set the ON-OFF selector switch to ON;
- Press and release the MEASURE 1 button;
- As the readiness indicator turns on, release the MEASURE 1
button and read the measured range;
- Compare the range measurement result with the actual distance.
The rangefinder is in good working order if the range
measurement is accurate to 5 m.
If there is no available target with known distance to it, the
rangefinder is checked for proper functioning by measuring the
range to the same target three times. The rangefinder is
functioning properly, if the measurements differ within 5 m
maximum.
10.2. Maintenance Service Types and Intervals.
10.2.1. While in use, the rangefinder is subject to the following
types of maintenance services:
- check inspection;
- daily (routine) service;
- in-service maintenance.
10.2.2. The same servicing intervals are established for the
component parts and the entire rangefinder.
Check inspection is carried out before using the rangefinder.
Daily servicing is performed after each use. If the rangefinder is
not used for a while, the servicing within daily scope may be
substituted to biweekly visual inspection of the dehydrator
condition and, if is needed, replacement of the silica gel and the
rechargeable battery.
In-service maintenance is performed every six months and
before placing the rangefinder in short-term storage.
10.3. Check Inspection.
10.3.1. During the Check Inspection the serviceable condition of
the rangefinder is checked as directed in Steps 1 through 7 in the
Table 9.1.
10.3.2. The check inspection scope is outlined in the Table 10.1.