| Date: | 2014-03-25 21:37:22 | |
| Sender: | ”Dr. Tom Varghese” <tom7911@gmail.com> | |
| Subject: | [RapidServiceMail] No.63: Re: (HITU) 7-8 ms time bias in Haleakala data | |
| Content: | Dan, 1. I do see 7-8 milliseconds of consistent time bias. 2. What was the cable rerouting done? 3. Can you tell me what was the configuration before and what we have now? 4. Do you see the time bias in your tracking by any chance? 5. Did you bump any time bias during this process? Tom From: Daniel O´Gara [mailto:danielogaraifa@gmail.com] Sent: Tuesday, March 25, 2014 5:29 PM To: Toshimichi Otsubo Cc: Dan OGara; Craig Foreman; RapidServiceMail; Thomas Varghese; Oldham, Thomas - IS.CONTRACTOR Subject: Re: (HITU) 7-8 ms time bias in Haleakala data Hi Toshi, We had a failure of our Time Code Generator. There was re-routing of frequency output cables and some testing done on March 22 from 18:30UT to 22:30UT. Unfortunately we had bad weather and could not track until March 24 UT. The changes should not have effected the station time. We will look into this today. aloha, Dan... On Tue, Mar 25, 2014 at 6:20 AM, Toshimichi Otsubo wrote: Dear Dan and Haleakala Station (cc: RapidServiceMail) Our quality check analysis has just detected a large time bias in Haleakala (7119)´s data since 24 March. It´s 7 to 8 msec. Please have a look at http://geo.science.hit-u.ac.jp/slr/bias/ (Go to the latest report) and check your timing system. Can you give me a quick reply please? Best Regards, Toshi ----- Toshimichi Otsubo Hitotsubashi University Web http://geo.science.hit-u.ac.jp/ Tel & Fax +81-42-580-8968 -- ----------------------------------------------------------------------- Daniel O´Gara |Voice: 808 573 9505(Office) Haleakala Observatories | 808 870 3295(Cell) Site Superintendent | Fax: 808 573 9557 | University of Hawaii | Institute for Astronomy | 34 Ohia Ku St. |email: ogara@ifa.hawaii.edu Pukalani, HI. 96768 ----------------------------------------------------------- |