17-4
17 CHECK AND ADJUSTMENT
● Vertical direction confirmation (Do not move Horizontal direction).
15) Carry out as Horizontal direction confirmation.
Compare the reading vertical angle of center of prism and calculated average value.
If the difference is within 2', no problem for use.
[Example] Lower side of prism 90°12'30"
Upper side of prism 90°04'30"
Average 90°08'30"
Reading to prism center 90°08'50"
Difference 20"
If the difference is more than mentioned value, contact with your Topcon dealer or Topcon.
● For non-prism mode
If the instrument is in the hold mode, press the [F4](HOLD) key to release the hold mode.
16)Press the [F3](NP/P) key to change the non-
prism mode.
17)Collimate the center of the prism.
18)Press the [F4](hold) key to hold the quantity of
the light.
The mark "#" will appear on the right side of the
signal level indicator.
19)Repeat above procedure 6 to 15 in the same
way in the non-prism mode.
If the difference is within 2', no problem for use.
If the difference is more than mentioned value,
contact with your Topcon dealer or Topcon.
Reticle
Prism
V: 90
°
10'10"
HR: 00
°
04'20"
N
P
SIGNAL:[❙ ❙ ❙ ❙ ❙] #
EXIT NP/P HOLD
V: 90
°
10'10"
HR: 00
°
04'20"
N
P
SIGNAL:[❙ ❙ ❙ ❙ ❙] #
EXIT NP/P HOLD
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