Date: Thu, 29 Nov 2001 11:51:44 -1000 (HST)
From: Tony Denault <denault@jeans.ifa.hawaii.edu>
To: John Rayner <rayner@jeans.ifa.hawaii.edu>
Cc: techgroup@jeans.ifa.hawaii.edu
Subject: Spex's Rotator

Hi John,

I finished testing the rotator (doing measurement of the number of
steps per rotation using the comparator trigger).

Here are today's results:

  measuring home-to-home in positive direction:
  
     719211
     720021
     720020
     
  measuring home-to-home in negative direction:

     720000+27
     720000-50
     720000+10

Other that the 1st measurement, the rest seem to indicate the
wheel is very close to its ~720000. 

Before the rotator failure and fix, these are the steps per rotation
measurements:

  positive direction:

     715443
     715509
     715669
     715509
     715507

     average size is 715527.

  negtive direction.

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

     average size is 715586.


Tony

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| Tony Denault                       | Email: denault@irtf.ifa.hawaii.edu |
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