I just received a new Celestron Auto Focuser for my Evolution 6 telescope. The unit installed and calibrated without issue. The problem is when making moves. So using the Hand Controller, if you make a move using the move up/down it works correctly, so Jog one direction and it moves, Jog in the other direction and it moves. However if you make a goto type move, i.e. 10200 to 10400, it will move directly to 10400. From 10400 to 10600 it will move directly to 10600. Then however if one moves in the opposite direction, from 10400 to 10200, it moves first 500 units from the starting location, so in this example it moves to 9900, then reverses to the target 10200. So it always gets to the target in this particular direction, but makes a 500 unit detour before going there.
If I use the laptop software CPWI it has the same issue, you can jog or goto a new target in one direction directly, but if you try in the opposite direction it first makes that 500 unit jump then reverses to the new target.
This is also true with the SkyPortal App from a mobile device. In this case the graphical "Rotary Knob" will work directly in one direction, then have the 500 unit glitch in the other direction. Also true with the small incremental moves of +1 or +10 and -1 or -10 in the App. One direction will always increment +1 or +10 directly, the other direction will always first move 500 units then reverse and go to the -1 or -10 increment that was selected.
The Backlash setting was zero, but I tried setting it to 0, 10, 50 or 99 with no effect on the 500 unit jump. This feels like either a bad servo or some type of firmware issue. Has anyone seen anything like this?
Edited by Skoviak99, 03 December 2020 - 10:16 AM.