8
DXA/DXC/SDXSERIESAZIMUTH ROTATOR
CALIBRATION
AzimuthOffsetNull
rBefore calibrate the Rotator, check to see that the GS-
232A’s DIP switch (switch 5) must be “ON” position.
rFrom the Controller panel, set the Rotator fully counter-
clockwise (set to 0°).
rPress [O]Ž[↵](the letter “oh”, and “ENTER”) on the
computer keyboard to activate the azimuth calibration
routine. The computer display should show AZaaaa =
bbbb returned from the Interface Board, where aaaa
and bbbb are four-digit numbers padded at the left with
zeroes.
rAdjust the AZ trimmer (located on the bottom case of
the GS-232A) while watching the computer display,until
the four-digit numbers aaaa and bbbb are the same
(the precise values are not important).
rTurn off the GS-232A’s POWER switch to exit the azi-
muth calibration routine, then turn on the GS-232A’s
POWER switch again.
AzimuthA-DCalibration
rFrom the Controller panel, set the Rotator fully clock-
wise (to the right).
rPress [F]Ž[↵](“F” and “ENTER”) on the computer key-
board to activate the Control Interface’s azimuth A-D
converter calibration routine. The computer’s display
should show +aaaa, where aaaa is a four-digit num-
ber which indicates the azimuth heading in degrees.
rAdjust the OUT VOL ADJ potentiometer on Controller
rear panel so as to get a reading of “0450” on the
computer’s display. This reading (“450 degrees”) corre-
sponds to the actual beam heading you established when
you pointed the azimuth rotator to the East.
rTurn off the GS-232A’s POWER switch to exit the azi-
muthA-D converter calibration routine, then turn on the
GS-232A’s POWER switch again.
Imprtant Note !
If your controller’s indicator needle starts from the point except 0° (North) (such as the default setting of the USA
version), align the starting point of the controller’s indicator needle to 0° (North) before calibration.
When finish the calibration, set the controller’s indicator needle to the desired point. Refer to the rotator’s user manual
for details regarding the indicator needle alignment.
