• accuracy: 5mm  + 5ppm
• range: 1km (1prism)
• measurement time: 1,5 sec
• production year: 1989-2001
  

Azimuth angles to use when aligning the distomats.  (top)

1. distomats 1,6  (corner T12) move the azimuth to 92.87, 272.87, or 452.87 degrees (whichever is closer)
2. distomats 2,3 (corner T4) move the azimuth to 32.87, 212.87, or 392.87 degrees (whichever is closer).
3. distomats 4,5 (corner T8) move the azimuth to  152.87, 332.87 or 512.87 degrees (whichever is closer).

Some things to keep in mind.

• Make sure the tiedowns are tracking the average height of the platform before you start the adjustments.  Look at the tiedown Status display in the control room. The mode should be tieTrk for all 3 tiedowns. If it does not say this, ask the operators to do a tietrk command
• The platform should be close to the reference position. Look on the laser ranging display  (the plot of height versus hour of day to the left of the observers workstation). On the upper right it has the time, platform position, and the platform reference position. The time should be within the last 3 or 4 minutes. The last position should be within .05 feet of the reference position.
• If the software tries to take a measurement while you are adjusting the distomat, it may get a no reading. In that case it will switch and use the temperature to position the tiedowns. This is probably not a problem.

History

• 2010
  
• 20sep10: distomat 2 replaced with spare.
  
• 17sep10: distomat 2 has been failing a lot. when window removed rcvd signal goes from 1 to 5. today replaced window with a window that was on the kronos time system in building 1. rcv signal with window on is now 2-2.5.. close to what other distomats have. (but distomat continued to fail). Willy says there is an error registering on the distomat.
  
• 20oct08: new reflectors at 2,3,4,5 installed
• 10oct08: new reflectors at 6,1 installed
• 10jan07: all dists window cleaned. dist2,3 were realigned
• 2007
  
• 24jan07: distomat 5 failed (sn 101115) with error 72. Replaced with spare (sn 101036?).
• apr07: some distomats were covered by the containment for a few days. Probably need to realign the distomats when painting done. For apr07->jul07 data was used even when ch not in stow position. This was needed since the painting did not leave the ch at stow.
• jul07: distomat 4 and 5 were off for a long time because of the painting containment.
• aug,sept.. some distomats covered by painting containment.
• 2006
  
• 13nov06: dist 3( sn xxx) was replaced with s/n 10115) from leica. The external window was replaced with a new one.
• 02oct06: dist5 window cleaned and realigned around 13:45
• 02oct06: dist6 (sn: 101115) was replaced by sn:10037. Cleaned and then realigned.
• 11sep06: all distomat  windows cleaned with fuller anti-fog.
•  07sep06: morning. replaced distomat 5 (sn 100337) with distomat back from maintenance (sn 101036).
• 06jul06: dist 4 (sn 101036) replaced by dist (sn 101075) and then realigned. sn 101036 will be sent back to fab for maintenance.
• 05jul06: all distomat windows cleaned.
• 21apr06: realigned D4. Looks like it got knocked out of alignment by the previous days work. D5 was also realigned.
• 20apr06: d1 switched out for maintenance. It was replaced with the spare that just came back from leica. windows cleaned and fans turned on for distomats: 1,2,3,4 (5,6 will be done tomorrow).
• 17mar06:d1 window cleaned inside,out with anti fog spray 14:00.
• 16mar06:d2 window changed 11:25.
• 14mar06: d1 window changed, realigned. Used a different glue with this window :flexible silicone adhesive silver plate aluminum from chomerics.
• 06mar06: d1,d2,d3 exterior window cleaned with anti fog.
• 23feb06: distomat 2,3  outside window cleaned with EXXENE antifog.
• 07feb06: new windows distomats: 3,4,5.
• 06feb06: new window distomat 6.
• 27jan06: afternoon all fans turned off. lenses cleaned.
• 19jan06: fan installed dist5
• 18jan06: fan installed dist 4
• 17jan06: fan installed dist 3
• 13jan06: fans installed dist 1 and 2.
• 11jan06: put fan in distomat 6 to try and improve temperature circulation inside canister.
• 2005
  
• 30may05 6pm distomat 4 stopped working. When examined, the heater was off. Probably no power getting to distomat. On next day found that the filter for the ac line that is right inside where the acpower enters the distomat canister was toast...
• 31jan05:    all distomats realigned.

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