Date: Tue, 6 Nov 2001 17:09:08 -1000 (HST)
From: Tony Denault <denault@irtf.ifa.hawaii.edu>
To: rayner@galileo.ifa.hawaii.edu
Subject: Re: rotator

On Tue, 6 Nov 2001 rayner@galileo.ifa.hawaii.edu wrote:

> 
> Tony,
> 
> I've finished testing. Everything is consistent with
> a calibration problem. Please go ahead and measure 
> the steps then gibe me a call.
> 

Did some test on the rotator. It acts like 1 rotation of the
mechanism is about 715500 steps.

1. Clockwise homing into limit (stops at 2.66 volts).

     715443 
     715509
     715669
     715509
     715507

     average size is 715527.

2. Counter Clockwise homing into limit (stops at ~2.66 volts).

     720000 - 4453  = 715547
     720000 - 4380  = 715620
     720000 - 4408  = 715592 

     average size is 715586.

3. Peaking up at ~4.25
   Moving 1 rotation, then peeking on voltage.

   I get about 715500

I will modified the code on wed (tomorror).

Tony


/-------------------------------------------------------------------------\
| Tony Denault                       | Email: denault@irtf.ifa.hawaii.edu |
| NASA IRTF, Institute for Astronomy |              Phone: (808) 933-0893 |
| 640 North Aohoku Place             |                Fax: (808) 933-0737 |
| Hilo, Hawaii 96720                 |                                    |
\-------------------------------------------------------------------------/