User guide

Trimble M3 Total Station User Guide 119
Checking and Adjustment 10
11. Calculate the average of all the values of RP, and the average of all the values of
RQ.
12. Compare the value of PQ to averaged RP + averaged RQ. The difference should
be within the specified range of error for the instrument (±23 mm + 2 ppm ×
distance).
At 100 m distance, the error range is ±23.2 mm. If the error is out of range,
contact your dealer.
10.1Checking and adjusting the compensator (C) and index (I)
1. To activate the Adjustment C&I program from
any screen that shows the
CHCK softkey, press
[F3].
The electric level is shown in graphic format.
2. Do one of the following:
– To go to the angle adjustment screen, press
[F1] c/i, see Vertical index and HA
collimation, page 119.
– To go to compensator adjustment, press
[F3] Comp, see Compensator adjustment,
page 120.
– To turn the compensator adjustment on or
off, press
[F4] C-no/C-yes.
B
Tip – Before starting this procedure, level the instrument
precisely.
100.1 Vertical index and HA collimation
1. To open the Adjustment C&I screen, press
[F1] c/i in the Adjust. C&I screen. The
Adjustment C&I screen shows the current sight
axis correction and vertical index correction will
be shown.
2. Do one of the following:
–To reset
c to zero, press [F1] c=0.
–To reset
i to zero, press [F3] i=0.
– To return to the previous screen, press
[ESC].
3. To take an angle measurement on Face-1, press
[MEAS/ENT].