1-7
1 NOMENCLATURE AND FUNCTIONS
Adjustment the contrast (0 to 9) of the display
This enable you to adjust the contrast of the display.
Press the up or down arrow keys to adjust the contrast.
Adjustment the reticle illumination (1 to 9)
This enable you to adjust the reticle illumination.
Turn the display back light ON/OFF
To turn the back light ON, press the [F1] key. Press [F1] again to turn the back light OFF.
Tilt correction
The tilt setting mode performed here will not be memorized after powering OFF. To set TILT
correction in the initialized setting (it is memorized after powering OFF), see Section 6.4.3 “Vertical
and Horizontal Angle Tilt correction (Tilt ON/OFF)”.
Set audio mode
The light acceptance quantity level (Signal level) is displayed in this mode.
When reflected light from the prism is received, a buzzer sounds. This function is good for easy
collimation when the target is difficult to find.
Press the [F4] key to view the set audio screen.
(1) To stop the buzzer, refer to Chapter 16 “SELECTING MODE”.
(2) Also, it is possible to display the signal level in Distance Measuring Mode.
The temperature, pressure, PPM, and PSM can be viewed in set audio mode.
Refer to Chapter 10 “SET AUDIO MODE”, Chapter 11 “SETTING THE PRISM CONSTANT VALUE”
and Chapter 12 “SETTING ATMOSPHERIC CORRECTION”, for further instructions.
1.6 Serial signal RS-232C connector
The serial signal connector is used for connecting the GTS-250 series with a computer or TOPCON
Data Collector, which enables the computer to receive measured data from the GTS-250 series or to
send preset data of horizontal angle, etc. to it.
The following data will be output at each mode.
The display and the output at the coarse mode are the same as the contents above.
Output at the tracking mode is displayed as distance data only.
The details necessary for the connection with the GTS-250 Series are obtained from its Interface
Manual which is optionally available. Please refer to the manual.
Mode
Output
Angle mode (V, HR or HL)
V, HR (or HL)
Horizontal distance mode (HR, HD, VD)
V, HR, HD, VD
Slope distance mode (V, HR, SD)
V, HR, SD, HD
Coordinate mode
N, E, Z, HR (or V, HR, SD, N, E, Z)
