Chapter 6
Adjustment and Verification
Focus 30/35 Service Manual 6 - 78 P/N 79000035_SM, Version 1.5
EDM offset determination
Note – The offset determination for EDM High Precision 1mm needs baselines, that have to be
calibrated with a reference instrument specified better then 1mm+1ppm. Use Trimble S8 Reference
instrument from Regional Service Center.
Performance
Fig. 6-64 Frequency measurement
4 Correct the TCXO
frequency.
A. Type in the measured
frequency and push
the
Enter button.
B. Repeat measurement
A until the measured
frequency value is in
tolerance.
C. Click
Save Correction
button.
A new
correction value
will be
calculated and
the TCXO
corrected.
Tolerance:
±2 Hz
5 Exit software. Click
Exit button.
Item Performance Action Result Notes
1 Start up instrument /
PASS.
See page 7-3 how to set-
up the instrument. Mount
the instrument on the
Baseline pillar and level
the instrument.
Tolerance:
<10cc in both
directions
Item Performance Action Result Notes
TCXO
Ground
Measure
frequency
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