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LTI MapStar TruAngle User’s Manual 3rd Edition
Section #3 - Using the TruAngle
Page 7
Fine Adjust and Friction Lock
•
The Fine Adjust wheel lets you precisely control the encoder’s rotation. Movement of the wheel results in
small angle update measurements. The Fine Adjust ratio is 66:1.
•
Tightening the Friction Lock keeps the encoder from rotating by adding friction to the base plate and to
the brake shoe which is attached to the chassis. Adjust as needed.
Button Names and Functions
Power ON the TruAngle
To power on the TruAngle, long press the ON button. Briefly, the LCD should look like Figure #8 and
the backlight will also be on. Next the LCD should look like Figure #9, prompting you to index the
encoder
.
Button
Function
Figure #7
ON
Long press powers on the TruAngle.
Shows the Display Test at power on until the
button is released
.
BL
When the TruAngle is already powered on, long
press to turn on / off the backlight.
OK
Short press to accept orientation and reference
the TruAngle at the value displayed.
ZERO
Long press to activate the Zero Mode.
BS
Short press to activate the Backsight Mode.
Press and hold both buttons until the TruAngle
powers off.
This manual simplifies the button names to relate to current function
instead of matching the TruAngle’s label. For example, instead of
“Press
the ON BL OK button to activate the backlight”
, this manual would state
“Press the BL button to activate the backlight”
.
Figure #8
Figure #9