3 AUTOMATIC TRACKING / AUTOMATIC COLLIMATION (GPT-8000A series)
3-6
2) Search Range
The search range is the area to searched for the prism by rotating the telescope and body in
Searching. The Search range is decided from the point where the prism lost, and the values will
be set to plus and minus directions in horizontal and vertical.
Select search pattern first, and set the search range to the selected search pattern. Also it is
enable to set each search pattern separately.
[Example] SEARCH RANGE: 10º in horizontal, 5º in vertical
-10
°
+10
°
-5
°
+5
°
20
°
10
°
Search range
Point where prism lost
Setting Search range requires consideration. The items to think about: optical path interrupted by
other objects; collimated point from GPT-8000A series to prism is shifted after Turning and
Searching Command; possible other prisms, targets, or other objects to interfere with tracking the
desired prism; and many other examples all play a role in determining the search range.
Note: This search range is only for auto-tracking function. The search range of auto-collimating is
fixed as ±5••• in both directions horizontal and vertical.
3) Wait Time
The time the prism is lost before GPT-8000A series starts the searching. Setting time is 1second
step maximum 60 minutes.
If the mode is set to [HOLD], mode will not change to searching.
4) Tracking Speed
The tracking accuracy (aiming accuracy) shall be determined in the best condition by the relation-
ship of moving speed of the prism and the distance between GPT-8000A series and the prism at
the field. Since the tracking speed represents the rotating speed of GPT-8000A series, if the
prism’s traveling speed is high, yet the distance of the prism is far from the GPT-8000A series, the
tracking speed can be low.
SURVEY
●
In case requiring auto aiming in high accuracy to the prism which is still.
●
Suitable for fixed point observation, management of landslides, surveying
displacement of dam.
●
When beginning auto-tracking, the instrument needs to collimate stable prism.
MACHINE
CONTROL
●
Suitable for controlling of construction machinery or real time surveying of variety
traveling objects.
●
When beginning auto-tracking, the instrument can track a prism, even if the prism is
moving.
5) Reflector type
You can choose a reflector type according to reflective objects such as Prism-2 or reflector tape.
This setting will reduce incorrect tracking.
Summary of Contents for GPT-8000 Series
Page 89: ...5 PROGRAM MODES 5 28 ...
Page 124: ...11 SETTING ATMOSPHERIC CORRECTION 11 4 ...
