Re: 1200GTO CP3 keypad lockup tonight


Jul 1, 2005

 


----------------------------

#13120 Jul 1, 2005

Hi,

Tonight I had my 1200GTO CP3 keypad lockup on me while preparing

to image M51 with the newly discovered supernova. I've had the mount

for about 4 months now and this is the first time I've had this

happen. At the time, I had slewed the scope to M51 using TheSky 5 and

was using the keypad to center it up, since M51 was to the west of the

meridian, and I usually image objects to the east since that direction

is less light polluted, and I haven't made my scope perfectly

orthogonal yet).

I had gotten M51 centered up, and was going to do a sync in case I

ended up wanting to shoot anything else in the western sky tonight. I

pressed 1 to sync, but the keypad didn't beep. Curious, I pressed the

menu key to cancel out of the object sync menu, but to no avail, the

keypad didn't respond. At this point I tried pressing various other

keys, still no dice, no response whatsoever. During this time the

keypad just displayed the "press 1 to sync object" prompt. I looked

at the power LED on the mount's CP3 control box, but it looked normal,

no yellow light indicating any trouble, no low power warning,

everything else looked normal. I checked that the keypad cable was

firmly attached and it too seemed completely fine. (hasn't been

removed in months, so there shouldn't be any mechanical wear or

contamination on the contacts either). Since I was unable to bring

the keypad back to life, I power cycled the mount, and when it came

back up, I just resumed from park, re-connected with TheSky 5, and

things were fine again and I picked up right where I left off. Since

I drive the mount from a dedicated 110V to 12V power supply rated for

30A, I expect that there was nothing power-wise that would have caused

this problem. Hopefully this was a very unusual glitch and isn't an

indication of anything unfortunate going on with my keypad hardware.

I was very pleased that the mount resumed from where I left it without

a hitch after power cycling. That made it much less of an issue

overall, and I've been imaging now for a couple hours with no hiccups

so far. Has anyone else experienced a keypad lockup like that?



John Stone



----------------------------

#13122 Jul 2, 2005

In a message dated 7/1/2005 11:32:37 PM Central Daylight Time,

johns@... writes:



> Since I was unable to bring

> the keypad back to life, I power cycled the mount,



If the keypad should do that again, simply unplug it and re-plug it into the

servo. No need to power cycle the entire mount.



We are aware of certain issues that can cause this problem and will advise

owners of these mounts shortly.



Roland Christen





[Non-text portions of this message have been removed]



----------------------------

#13127 Jul 2, 2005

Roland,

Thanks for the info, I didn't realize it was safe to re-plug

the keypad while the mount is powered up. Everything is going

smoothly so far tonight. Two clear nights in a row in Illinois,

unbelievable! :)



John Stone

--- In ap-gto@yahoogroups.com, chris1011@a... wrote:

> In a message dated 7/1/2005 11:32:37 PM Central Daylight Time,

> johns@m... writes:

>

>

> > Since I was unable to bring

> > the keypad back to life, I power cycled the mount,

>

> If the keypad should do that again, simply unplug it and re-plug it

into the

> servo. No need to power cycle the entire mount.

>

> We are aware of certain issues that can cause this problem and will

advise

> owners of these mounts shortly.

>

> Roland Christen

>

>

> [Non-text portions of this message have been removed]



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