DQR ID | Subject | Data Streams Affected |
---|---|---|
D050124.3 | TWP/MMCR/C3 - Instrument failure | twpmmcrC3.00, twpmmcrcalC3.00, twpmmcrcalC3.a1, twpmmcrmonC3.00, twpmmcrmonC3.a1, twpmmcrpowC3.00, twpmmcrpowC3.a1 |
D050427.1 | TWP/MMCR/C3 - MMCR Inoperative | twpmmcrC3.00, twpmmcrcalC3.00, twpmmcrcalC3.a1, twpmmcrmomentsC3.00, twpmmcrmomentsC3.a1, twpmmcrmonC3.00, twpmmcrmonC3.a1, twpmmcrpowC3.00, twpmmcrpowC3.a1 |
D050620.1 | TWP/MMCR/C3 - Reprocess: Calibration | twpmmcrcalC3.a1 |
D060220.3 | TWP/MMCR/C3 - MMCR Power Monitor failure | twpmmcrcalC3.a1, twpmmcrpowC3.a1 |
Start Date | Start Time | End Date | End Time |
---|---|---|---|
03/01/2005 | 0000 | 03/07/2005 | 2030 |
Subject: | TWP/MMCR/C3 - Instrument failure |
DataStreams: | twpmmcrC3.00, twpmmcrcalC3.00, twpmmcrcalC3.a1, twpmmcrmonC3.00, twpmmcrmonC3.a1, twpmmcrpowC3.00, twpmmcrpowC3.a1 |
Description: | The TWTA failed. |
Measurements: | twpmmcrcalC3.00:
twpmmcrC3.00:
twpmmcrmonC3.a1:
twpmmcrpowC3.00:
twpmmcrpowC3.a1:
twpmmcrcalC3.a1:
twpmmcrmonC3.00:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
01/30/2003 | 0000 | 02/01/2005 | 0100 |
Subject: | TWP/MMCR/C3 - MMCR Inoperative |
DataStreams: | twpmmcrC3.00, twpmmcrcalC3.00, twpmmcrcalC3.a1, twpmmcrmomentsC3.00, twpmmcrmomentsC3.a1, twpmmcrmonC3.00, twpmmcrmonC3.a1, twpmmcrpowC3.00, twpmmcrpowC3.a1 |
Description: | During this period, the MMCR at Darwin was cannibalized routinely to keep the Manus and Nauru MMCRs operational. The largest downtime during this period was due to the replacement and repair of the antenna. During attempts to "rebuild" the MMCR, data files may have been generated that are of no use. |
Measurements: | twpmmcrcalC3.00:
twpmmcrC3.00:
twpmmcrmonC3.a1:
twpmmcrmomentsC3.00:
twpmmcrpowC3.a1:
twpmmcrpowC3.00:
twpmmcrcalC3.a1:
twpmmcrmonC3.00:
twpmmcrmomentsC3.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/01/2005 | 0100 | 06/19/2005 | 2145 |
Subject: | TWP/MMCR/C3 - Reprocess: Calibration |
DataStreams: | twpmmcrcalC3.a1 |
Description: | The Solaris computer was changed out in late January. The antenna parameters were not changed when this happened so that the SGP's antenna gain and beamwidths were used to calculate the radar constant. This results in an underestimation of 4.69 dB in reflectivity. The difference in antenna gain is 57.2-52.73 dB or 4.47 dB. Since the gain is squared in the denominator of the radar constant, this results in an error of 8.94 dB due to the antenna gain alone. The difference in beamwidth is 0.19 to 0.31. 20log(.19/.31) = -4.25 dB. Total reflectivity error = 8.94 dB - 4.25 dB = 4.69 dB |
Measurements: | twpmmcrcalC3.a1:
|
Start Date | Start Time | End Date | End Time |
---|---|---|---|
02/01/2005 | 0100 | 11/04/2005 | 0600 |
Subject: | TWP/MMCR/C3 - MMCR Power Monitor failure |
DataStreams: | twpmmcrcalC3.a1, twpmmcrpowC3.a1 |
Description: | During this period, the transmit power monitor on the TWTA was not working. This resulted in the power level reading staying at a steady state (approximately 49 dBm). Normal transmitter fluctuations are expected to be on the order of +/- 0.3 dBm. |
Measurements: | twpmmcrcalC3.a1:
twpmmcrpowC3.a1:
|