Trimble S - Page 454

Chapter 6
Adjustment and verification
Trimble S, VX, SPS & RTS Service Manual6 - 118 P/N 57150002, Revision 5.0
F
5 Check crosstalk. A. Mount the Light trap
tool on the front lens.
B. Select
Cross talk check
check box.
C. Click
Cross talk
measure
.
D. Click
Stop to finnish
test.
3 Clean the front lens
and make sure the
Light trap tool is
cleaned. Dust and
fingerprints can affect
the result.
If value is still too
high:
Check the transmitter
and receiver
adjustment, see page
6-90.
Check if APD is
tighten with screw,
see Fig. 5-94 on page
5-97 .
Check adjustment of
receiver fibre to APD
signal maximum, see
see page 6-105.
6 Check signal/noise
ratio.
A. Mount the Light Cover
Front lens.
B. Select
Signal noise
check
check box.
C. Click
Signal noise
measurement
.
> 10 If value out of
tolerance, check
receiver APD value
and reference signal.
7 Distance measurement
in DR mode.
A. Aim to the 2,5 meter
DR target.
B. Select
Distance
measurement
check
box.
C. Click
DR measure
button.
D. Click
Stop to finnish
test.
<3mm The red spot of
transmitter should
blinking periodically.
If no measurement is
possible, or the value
is out of tolerance,
check the transmitter/
laser pointer
adjustment, see Fig.
6-107 on page 6-96
and run EDM offset
determination, see
page 6-120.
Item Performance Description Result Notes