Vixen SPHINX SXD Mount - Manual (Page 42)

Page 43
Setting the backlash compensation
(1) Press Menu to display the System Menu on the screen. Move the cursor to Backlash
Compensation with the keys and press Select to enter.
(2) The default values for backlash compensation are set to 0 both in R.A. and DEC.. Move
the cursor with the
keys and select your setting preference with the Value+, Value-
keys.
The values can be set between 0 and 100 both in R.A and DEC.
(3) Choose OK and press Select to enter.
Save the settings in order for the current settings to apply the next time the STAR BOOK is
used.
Tips on setting values of backlash compensation
Watch how the telescope moves when you increase the values. Start with setting an
initial reference value (10 for example), and double this value after checking the telescope
movement with the initial value. If the second value (20) is too small to compensate for the
backlash, enter the number doubled (40) as the second value. Likewise, increase the
number by doubling the value if necessary.
Example: Enter 20 for setting the backlash compensation. If this value is too weak for the
compensation, increase the value to 40. If it generates too strong compensation as a
result, decrease to the value halfway between 20 and 40. If the value of 30 is still
somewhat large for the compensation, decrease to 25. On the contrary if 30 is somewhat
small, increase to 35. In this way you can adjust the mount for the most effective
backlash compensation.