DQR ID | Subject | Data Streams Affected |
---|---|---|
D050826.1 | TWP/TSI/C1 - obstruction in lens | twptsiC1.00, twptsimovieC1.a1, twptsicldmaskC1.a1, twptsiskycoverC1.b1, twptsiskyimageC1.a1 |
D060203.1 | TWP/TSI/C1 - signal cable problem | twptsiC1.00, twptsimovieC1.a1, twptsicldmaskC1.a1, twptsiskycoverC1.b1, twptsiskyimageC1.a1 |
D060718.4 | TWP/TSI/C1 - Shadowband continuosly rotating | twptsiC1.00, twptsimovieC1.a1, twptsicldmaskC1.a1, twptsiskycoverC1.b1, twptsiskyimageC1.a1 |
D060915.2 | TWP/TSI/C1 - solar shadowband inoperative | twptsimovieC1.a1, twptsicldmaskC1.a1, twptsiskycoverC1.b1, twptsiskyimageC1.a1 |
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/20/2005 | 0000 | 03/23/2006 | 0618 |
Subject: | TWP/TSI/C1 - obstruction in lens |
DataStreams: | twptsiC1.00, twptsimovieC1.a1, twptsicldmaskC1.a1, twptsiskycoverC1.b1, twptsiskyimageC1.a1 |
Description: | The TSI at Manus has been able to remain dry and produces an image but the percentage of cloud cover is determined to be 100% even on cloud free days. Moisture in the camera lens and neutral density filter was corrupting the sky images. The lens and filter were cleaned, the moisure seals checked, the camera housing sealed, and desiccant added to both the camera housing and main electronics enclosure. On 3/23/2006, the lens was replaced and the sky images were significantly improved. |
Measurements: | twptsiC1.00:
twptsicldmaskC1.a1:
twptsimovieC1.a1:
twptsiskyimageC1.a1:
twptsiskycoverC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/22/2006 | 0900 | 02/24/2006 | 2250 |
Subject: | TWP/TSI/C1 - signal cable problem |
DataStreams: | twptsiC1.00, twptsimovieC1.a1, twptsicldmaskC1.a1, twptsiskycoverC1.b1, twptsiskyimageC1.a1 |
Description: | Communication was lost with the TSI. The connectors on each end of the cable between the camera and the 4-port hub was replaced. |
Measurements: | twptsiC1.00:
twptsicldmaskC1.a1:
twptsimovieC1.a1:
twptsiskyimageC1.a1:
twptsiskycoverC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
07/18/2006 | 2000 | 07/25/2006 | 0350 |
Subject: | TWP/TSI/C1 - Shadowband continuosly rotating |
DataStreams: | twptsiC1.00, twptsimovieC1.a1, twptsicldmaskC1.a1, twptsiskycoverC1.b1, twptsiskyimageC1.a1 |
Description: | The mirror was continuously spinning during different periods of the day, usually in the afternoon, causing the shadowband to not properly block the sun. This problem was corrected by removing the real-time-clock integrated circuit DSI306, or EEPROM U10, from the control board and reloading the position and time parameters. |
Measurements: | twptsiC1.00:
twptsicldmaskC1.a1:
twptsimovieC1.a1:
twptsiskyimageC1.a1:
twptsiskycoverC1.b1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
08/29/2006 | 1900 | 01/30/2007 | 0010 |
Subject: | TWP/TSI/C1 - solar shadowband inoperative |
DataStreams: | twptsimovieC1.a1, twptsicldmaskC1.a1, twptsiskycoverC1.b1, twptsiskyimageC1.a1 |
Description: | The mirror/shadowband was not turning and there was no communication with the control board. The shadowband was stuck in the position of 0 degrees from 8/29 to 9/20/2006. On 10/12/2006, the mirror was replaced, the real-time clock chip was removed and heat sinks were added to the control board, and the Ethernet hub and serial adaptor were replaced. On 1/8/2007, the slip clutch assembly, timing pulley, and timing belt were replaced (which were damaged when the mirror was replaced). These actions did not correct the problem. The instrument was swapped with the unit from Darwin so that the control board could be repaired and tested in Darwin. Several images were collected in the iterim that should be ignored. These images include periods when the sun was not masked by the shadowband or the camera lens was covered by tape to protect the CCD from direct exposure to the sun. There are also extended periods of missing data when the instrument was shutdown, waiting for parts. |
Measurements: | twptsicldmaskC1.a1:
twptsimovieC1.a1:
twptsiskyimageC1.a1:
twptsiskycoverC1.b1:
|