Topcon DS-101AC, Instruction Manual

Page: 59 / 176

53
10. TARGET SIGHTING
PROCEDURE
1. Select "Motor" in <Configuration>.
Set Auto Pointing functions in the Configuration
tab.
Set "Search Setting" to "Search".
Items set and options (*: Factory setting)
(1) AUTO AIM
&
: Fine/Rapid*
(2) Search Setting : None/Search*
(3) TURN
&
: 5"/10"*/20"/30"/60"
&
AUTO AIM
When the target enters the field-of-view within the set limit for Auto Pointing completion (the limit
differs between "Fine" and "Rapid"), the instrument starts acquiring data (the amount of data
differs between "Fine" and "Rapid") then completes the Auto Pointing by calculating the data.
Set to "Fine" for greater accuracy during Auto Pointing. Make sure that the prism is securely
mounted on a tripod etc.
Set to "Rapid" when supporting the pole by hand.
When "Fine" is set the instrument checks that the prism position is stable, then searches for the
prism direction. Once the instrument confirms that the prism is sighted at the approximate center
of the field-of-view, Auto Pointing is complete. Although this setting provides greater accuracy,
when supporting the pole by hand, hand movements will result in Auto Pointing taking too long
to complete and a "Time out" error will occur.
When "Rapid" is set however, Auto Pointing can be performed even with slight instability of prism
position or minor shifts of target position in the field-of-view. The instrument will use the data
obtained to determine the direction of the target.
Auto Pointing performed using the "Rapid" setting can be completed in a much quicker time than
the "Fine" setting.
"Fine" is recommended when a high level of measurement accuracy is needed. The range for
the offset between the target and reticle after Auto Pointing completed changes as shown below
depending on the Srch. accuracy setting.
10.1 Auto Pointing Settings