| DQR ID | Subject | Data Streams Affected |
|---|---|---|
| D070301.1 | SGP/NIMFR/C1 - Tube heater not functioning | sgpnimfrC1.b1, sgpnimfrC1.a0 |
| D081020.1 | SGP/NIMFR/C1 - Intermittent noise, 500nm | sgpnimfrC1.a0, sgpnimfrC1.b1, sgpnimfrlangleyC1.c1, sgpnimfrlangplotC1.c1 |
| D091010.1 | SGP/NIMFR/C1 - Noise in 500nm channel | sgpnimfrC1.a0, sgpnimfrC1.b1, sgpnimfrlangleyC1.c1, sgpnimfrlangplotC1.c1 |
| D091216.5 | SGP/NIMFR/C1 - Tube heater | sgpnimfrC1.a0, sgpnimfrC1.b1, sgpnimfrlangleyC1.c1, sgpnimfrlangplotC1.c1 |
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 06/12/2006 | 1100 | 01/08/2008 | 2100 |
| Subject: | SGP/NIMFR/C1 - Tube heater not functioning |
| DataStreams: | sgpnimfrC1.b1, sgpnimfrC1.a0 |
| Description: | The tube heater is not functioning properly. On 6/27/06, site operations personnel indicated the heater plug was found to be disconnected (The heater became disconnected on 6/12/06). It was reconnected and while the head temperature returned to normal, the tube temperatures are still bad. The purpose of the tube heater is to help prevent condensation from forming on the window. The mentor has not noticed any problems with the data resulting from the tube heater malfunction. However, since the instrument is technically not fully functional, this DQR is being issued. A repair attempt was made on June 7, 2007 that resulted in the tube temperatures reaching at times into the upper 50s and sometimes even the lower 60s. The high tube temps influenced the head temperature causing it to move into the upper 40s and sometimes the lower 50s. The heater was repaired on Oct 11, 2007. Though repaired, the instrument was configured to keep the tube temp in the lower 20s (deg C). This is acceptable, though to keep with instrument specifications the setting was adjusted to keep the temps in the upper 30s (deg C). This occurred on 8 Jan, 2008. |
| Measurements: | sgpnimfrC1.a0:
sgpnimfrC1.b1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 10/16/2008 | 2000 | 11/01/2008 | 2359 |
| Subject: | SGP/NIMFR/C1 - Intermittent noise, 500nm |
| DataStreams: | sgpnimfrC1.a0, sgpnimfrC1.b1, sgpnimfrlangleyC1.c1, sgpnimfrlangplotC1.c1 |
| Description: | Values of direct_normal_narrowband_filter2 (500 nm) were erratic at times, likely the result of a poor connection in the signal. The erratic behavior is last seen on 20081101, before the connectors were cleaned. |
| Measurements: | sgpnimfrlangplotC1.c1:
sgpnimfrC1.a0:
sgpnimfrlangleyC1.c1:
sgpnimfrC1.b1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 08/23/2009 | 1200 | 10/31/2009 | 2000 |
| Subject: | SGP/NIMFR/C1 - Noise in 500nm channel |
| DataStreams: | sgpnimfrC1.a0, sgpnimfrC1.b1, sgpnimfrlangleyC1.c1, sgpnimfrlangplotC1.c1 |
| Description: | The 500nm channel data were noisy at times, and at other times output "steps down" a notch. On 10/14, maintenance was performed to re-seat connection. On 10/31, the noise returned briefly, so the end-date has been extended through that date. |
| Measurements: | sgpnimfrlangplotC1.c1:
sgpnimfrC1.a0:
sgpnimfrlangleyC1.c1:
sgpnimfrC1.b1:
|
| Start Date | Start Time | End Date | End Time |
|---|---|---|---|
| 10/14/2009 | 1608 | 12/03/2009 | 2216 |
| Subject: | SGP/NIMFR/C1 - Tube heater |
| DataStreams: | sgpnimfrC1.a0, sgpnimfrC1.b1, sgpnimfrlangleyC1.c1, sgpnimfrlangplotC1.c1 |
| Description: | The function of the tube heater is to prevent dew from forming on the front window. During this period the tube heater was not functioning, there were no reports of dew, and there were no indications in the data that dew on the window was affecting data. |
| Measurements: | sgpnimfrlangplotC1.c1:
sgpnimfrC1.a0:
sgpnimfrC1.b1:
sgpnimfrlangleyC1.c1:
|