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? Vertical plate angle specification ( “
i”
angle) and its 0 set
Check
? After mounting and leveling, power on the instrument. Aim the telescope at any
clear target A to get the reading L the vertical plate leftward.
? Turn the telescope and aim at target A again to get the reading R the vertical
plate rightward.
? If vertical angle is in the zenith angle mode, then i=(L+R- 360°) /2.
If in the vertical angle mode, then i=(L+R-540°)/2.
If in the height angle mode, then i=(L–R)/2
? If the specification errors |i|=20?, 0 reset of the vertical plate is necessary.
Adjustment
? After leveling precisely, power on the instrument. Press V/% key once, the
request of zero-set of vertical angle is displayed.
? Rotate the telescope slowly in the horizontal direction of the left vertical plate
until the vertical angle is displayed. Press FUNC key once, then press V/% key. The
instrument displays as follows:
? Rotate the instrument and precisely aim at the clear and stable target A as high
as the instrument in the distance. Press 0SET key, the instrument displays as
follows:
? Turn the telescope and aim the right of the vertical plate at the same target A.
Press 0SET key and the instrument backs to the angle measurement mode after
the setting.
?
Check the specification error i to see whether it accords with the requires. If not,
check whether do the right adjusting procedures, or whether the aim of the
target is precisely, etc.
?
Send to the factory for repair after operations repeated many times without any
effect.
