User's Manual

6 Checking and Adjusting
120 Spectra Precision Focus 4 Total Station User Guide
Adjusting the calibration
1. Press [MENU] and [7]. The calibration screen
appears.
2. The Focus 4 total station has two-axis level
compensation. Take an F1 measurement to a
target on the horizon. Press
[ENT].
The calibration fields for F1 are:
The vertical angle is shown in the V0 dir= Horiz setting.
When you have taken the measurement, the
message on the bottom line changes from
DO
NOT TOUCH! to Turn to F2.
3. Take an F2 measurement to the same target.
Press
[ENT].
The calibration values for F2 are:
When the observation on F2 is completed, four
parameters are displayed.
4. Do one of the following:
– To return to the first observation screen,
press
[ESC] or select the Redo softkey.
– To set parameters on the instrument, press
[ENT] or select the OK softkey.
5. If ACV, ACH, or Tilt is out of range, OVER
appears. Press any key to return to the first
observation screen.
VA1 Face-1 vertical angle (tilt-off value)
HA1 Face-1 horizontal angle (tilt-off
value)
X1 Face-1 X-axis tilt value
Y1 Face-1 Y-axis tilt value
VA2 Face-2 vertical angle (tilt-off value)
HA2 Face-2 horizontal angle (tilt-off
value)
X2 Face-2 X-axis tilt value
Y2 Face-2 Y-axis tilt value