View Single Post
  #4 (permalink)  
Old 09-01-2006, 09:42 AM
wejones's Avatar
wejones wejones is offline
Cranky Crumudgeon
Expert
 
Join Date: Aug 2003
Location: MAINE
Posts: 2,758
Rep Power: 468
wejones is a splendid one to beholdwejones is a splendid one to beholdwejones is a splendid one to beholdwejones is a splendid one to beholdwejones is a splendid one to beholdwejones is a splendid one to beholdwejones is a splendid one to behold
Quote:
Originally Posted by onoves
I have a Motor SG2100 + diseq 3x1 with one exit (3 sat and 1 terrestial).

If I do a motor reset, the motor runs properly until
I switch off the receiver, the motor looses again the 0 position, and it doesn't
run automatically when I change the satellite in the receiver.

If anyone have an idea about what I can check ...

Thanks in advance !!
I have a question about the question...... I was curious about just what a "motor reset" actually does. I was reading the little sheet that passes for a manual for this motor, and a couple things caught my attention.

In the manual, it says that to do a reset, that you first have to drive the motor manually to it's zero position, and then do the reset, and it suggests that after the reset, that it's "current position" will then become the zero position. Ie if I read this right, a goto-zero command will go to a different position after a reset, because going manually to the zero position isn't a very accurate thing, seeing as you'd probably be lucky to be within a couple degrees when using the scale on the motor. Mine didn't even point to zero out of the box.

Anyway, I'm starting to think that the use of this reset thing could get you significantly out of "sync" if you are using USALS, but that fact could end up being an advantage, because my main complaint about the USALS thing is that it didn't seem to have a "resync" command, while the DiseqC 1.2 format DOES have a resync command. Ie there may be a good procedure for driving your dish to the proper zero position based on peaking your satellites, then use this position to reset your motor and resync the system. I'm going to have to experiment with this, as I still don't understand the workings of these motors enough to be sure I understand what they are doing all the time.

However I then became confused about just what is the difference between doing a motor reset, and doing a DiseqC 1.2 resync? Is this basically the same, except that the 1.2 resync doesn't erase the sat positions stored on the motor and replace them with the factory settings?

Also, does doing a DiseqC 1.2 "resync" affect the goto-zero position when using USALS?

ALSO, I'm curious about what happens if you give the motor a GOTO-zero command, and something interrupts the action, like a power failure? Ie does the place the motor stops at the power failure now become the new zero position?

Basically, I was previously under the impression, that the goto-zero command was an ABSOLUTE command, that was always the same in USALS, and that could be altered via DiseqC 1.2, but could be brought back to factory conditions with a reset. But on reading the manual, it looks like you cannot come back to factory conditions with a reset, and that a reset must be done very carefully, and may involve some undocumented procedures to do right.

Since the poster above seems to have done several resets, I'm curious what procedure was used, and what results were observed? And/or any of the more experienced users of these motors might provide their observations. This may all be an issue of the English translation of this manual may be confusing me, but it sure seems like this motor reset is NOT a reset to factory conditions, but a user calibration, which should be done with care.

Any comments?
__________________
Bill in Maine

Sadoun has censored my signature for no good reason, which is annoying.
Reply With Quote