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5.4.7. Set Backlash Value
Set the backlash of R.A axis and DEC axis. Although both R.A. and DEC worms have gap-free
structure, there still might be backlash or play between the reducing gears of a R.A. or DEC motor.
To set the backlash value, scroll down and select “Set Backlash Value”
Press ENTER. A R.A. anti-backlash screen will display:
To adjust steps move the cursor to each digit and use the number keys to input number directly. It is
about 0.10 arc seconds per step for R.A. backlash. Press ENTER – “DEC anti-backlash” will display:
Move the cursor to each digit and use the number keys to set the anti-backlash. It is about 0.12 arc
seconds per step for DEC backlash. Press ENTER to go back the previous screen. Press BACK button to
go back to main menu.
While viewing an object in the eyepiece, observe the responsiveness of each of the four arrow
buttons. Note which directions you see a pause in the star movement after the button has been pressed.
Working one axis at a time, adjust the backlash settings high enough to cause immediate movement without
resulting in a pronounced jump when pressing or releasing the button. The hand controller will remember
these values and use them each time it is turned on until they are changed.
5.4.8. Set Key Beep
Turn the key beep on/off.
5.4.9. Reset All
Reset all settings to factory default data.
5.4.10. Meridian Protection
The Meridian Flip can be turn on or off. If the Meridian Flip is turned off, there are two more options:
Meridian Protection ON or OFF.
R.A. anti-backlash:
0000 steps
Set up Local Time
Set up Observ. site
Set N/S hemisphere
Set display contrast
Set Eyepiece light
Set Backlight
Set Backlash Value
Set Key Beep
DEC anti-backlash:
0000 steps