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COS FUV High Voltage History Segment A

DateTimeHV Level (counts)HV Level (volts)Description
3/27/03 00:00 178-5292.82FUV02 installed; voltage value not verified
6/4/09 21:05 0-2500.00First HV turn on: HVON
6/5/09 16:55 100-4069.00HV Ramp up to HVLOW
6/6/09 20:51 154-4916.26HV Ramp Up Step 1
6/8/09 17:32 160-5010.40HV Ramp Up Step 2
6/10/09 19:23 166-5104.54HV Ramp Up Step 3
6/12/09 17:25 172-5198.68HV Ramp Up Step 4
6/14/09 19:00 178-5292.82HV Ramp Up to HVNOM
8/5/09 00:00 169-5151.61Lowered both segments to decrease modal gain
8/6/09 12:00 178-5292.82Return to nominal value
8/12/09 00:00 169-5151.61Changed HVNOM to 169/167 from 178/175
12/21/10 04:00 178-5292.82Temporary HV increase to original values
12/21/10 09:29 169-5151.61Return to nominal value
2/27/12 12:00 143-4743.67HV Sweep with wavecal at new lifetime position
2/27/12 12:20 147-4806.43HV Sweep with wavecal at new lifetime position
2/27/12 12:40 152-4884.88HV Sweep with wavecal at new lifetime position
2/27/12 12:49 157-4963.33HV Sweep with wavecal at new lifetime position
2/27/12 13:04 169-5151.61HV Sweep with wavecal at new lifetime position
2/27/12 13:20 175-5245.75HV Sweep with wavecal at new lifetime position
2/27/12 13:39 169-5151.61Return to nominal value
2/28/12 03:29 155-4931.95HV Sweep with deuterium lamp at new lifetime position
2/28/12 07:59 169-5151.61Return to nominal value
3/19/12 00:00 143-4743.67HV Sweep with wavecal at new lifetime position
3/19/12 00:40 147-4806.43HV Sweep with wavecal at new lifetime position
3/19/12 00:55 152-4884.88HV Sweep with wavecal at new lifetime position
3/19/12 01:10 157-4963.33HV Sweep with wavecal at new lifetime position
3/19/12 01:30 163-5057.47HV Sweep with wavecal at new lifetime position
3/19/12 02:00 169-5151.61Return to nominal value
3/19/12 06:00 143-4743.67HV Sweep with wavecal at new lifetime position
3/19/12 06:15 147-4806.43HV Sweep with wavecal at new lifetime position
3/19/12 07:00 152-4884.88HV Sweep with wavecal at new lifetime position
3/19/12 07:30 157-4963.33HV Sweep with wavecal at new lifetime position
3/19/12 08:00 163-5057.47HV Sweep with wavecal at new lifetime position
3/19/12 09:00 169-5151.61Return to nominal value
3/19/12 18:10 143-4743.67HV Sweep with wavecal at new lifetime position
3/19/12 18:55 147-4806.43HV Sweep with wavecal at new lifetime position
3/19/12 21:00 152-4884.88HV Sweep with wavecal at new lifetime position
3/19/12 21:20 157-4963.33HV Sweep with wavecal at new lifetime position
3/19/12 21:50 163-5057.47HV Sweep with wavecal at new lifetime position
3/19/12 22:30 142-4727.98HV Sweep with deuterium lamp at new lifetime position
3/20/12 04:00 143-4743.67HV Sweep with wavecal at new lifetime position
3/20/12 04:15 147-4806.43HV Sweep with wavecal at new lifetime position
3/20/12 04:45 152-4884.88HV Sweep with wavecal at new lifetime position
3/20/12 05:30 157-4963.33HV Sweep with wavecal at new lifetime position
3/20/12 06:10 163-5057.47HV Sweep with wavecal at new lifetime position
3/20/12 06:30 169-5151.61Return to nominal value
3/22/12 20:00 147-4806.43HV Sweep with deuterium lamp at new lifetime position
3/23/12 01:00 169-5151.61Return to nominal value
3/25/12 00:00 162-5041.78HV Sweep with deuterium lamp at new lifetime position
3/25/12 18:00 169-5151.61Return to nominal value
3/26/12 00:00 178-5292.82Increased HV to compensate for gain sag
4/16/12 00:00 167-5120.23Target ACQ testing at new lifetime position
4/16/12 09:00 178-5292.82Return to nominal value
4/17/12 04:00 167-5120.23G140L Focus Sweep at new lifetime position
4/17/12 08:00 178-5292.82Return to nominal value
5/24/12 00:00 100-4069.00HV Recovery - Day 1
5/25/12 00:00 154-4916.26HV Recovery Day 2 - QE grid off
5/29/30 00:00 100-4069.00HV Recovery Day 3 - QE grid off
5/30/12 00:00 160-5010.40HV Recovery Day 4 - QE grid off
5/31/12 00:00 154-4916.26HV Recovery Day 5 - QE grid off
6/1/12 00:00 166-5104.54HV Recovery Day 6 - QE grid off
6/4/12 00:00 160-5010.40HV Recovery Day 7 - QE grid off
6/5/12 00:00 172-5198.68HV Recovery Day 8 - QE grid off
6/7/12 00:00 166-5104.54HV Recovery Day 9 - QE grid off
6/8/12 00:00 178-5292.82HV Recovery Day 10 - QE grid off
6/11/12 00:00 172-5198.68HV Recovery Day 11 - QE grid off
6/12/12 00:00 178-5292.82HV Recovery Day 12 - QE grid off; back to HVNOM
6/17/12 19:00 167-5120.23Target ACQ testing at new lifetime position
6/19/12 02:00 178-5292.82Return to nominal value
7/23/12 00:00 167-5120.23New nominal HV value of 167 at second lifetime position
8/15/12 22:00 178-5292.82TDS old G130M/G140L target at old position
8/16/12 01:00 167-5120.23Return to nominal values
8/24/12 11:00 178-5292.82TDS old G160M target at old position
8/27/12 09:00 143-4743.67HV Sweep with wavecal at same postion as previous test
8/27/12 10:05 147-4806.43HV Sweep with wavecal at same postion as previous test
8/27/12 10:15 152-4884.88HV Sweep with wavecal at same postion as previous test
8/27/12 10:30 157-4963.33HV Sweep with wavecal at same postion as previous test
8/27/12 10:45 169-5151.61HV Sweep with wavecal at same postion as previous test
8/27/12 11:00 175-5245.75HV Sweep with wavecal at same postion as previous test
8/28/12 03:00 157-4963.33HV Sweep with wavecal at same postion as previous test
8/28/12 03:20 167-5120.23HV Sweep with wavecal at same postion as previous test
8/28/12 03:30 169-5151.61HV Sweep with wavecal at same postion as previous test
8/28/12 03:50 172-5198.68HV Sweep with wavecal at same postion as previous test
8/28/12 04:00 175-5245.75HV Sweep with wavecal at same postion as previous test
8/28/12 04:45 178-5292.82HV Sweep with wavecal at same postion as previous test
8/28/12 18:30 147-4806.43HV Sweep with wavecal above the new lifetime position
8/28/12 18:40 157-4963.33HV Sweep with wavecal above the new lifetime position
8/28/12 19:00 167-5120.23HV Sweep with wavecal above the new lifetime position
8/28/12 19:20 172-5198.68HV Sweep with wavecal above the new lifetime position
8/28/12 20:00 175-5245.75HV Sweep with wavecal above the new lifetime position
8/28/12 20:30 178-5292.82HV Sweep with wavecal above the new lifetime position
8/28/12 21:00 167-5120.23Return to nominal values
1/6/14 04:00 171-5182.99Characterization of gain at LP3 (LOP1)
1/6/14 06:30 167-5120.23Return to nominal values
2/4/14 09:00 171-5182.99Testing placement of spectra at LP3 (LOP2)
2/4/1414:50 167-5120.23Return to nominal values
7/7/140:00 178-5292.82Testing new HV Management (LENA4/13637)
7/7/1411:57 167-5120.23Testing new HV Management (LENA4/13637)
7/7/14 12:04178-5292.82Testing new HV Management (LENA4/13637)
7/7/14 12:32167-5120.23Testing new HV Management (LENA4/13637)
7/7/14 12:40178-5292.82Testing new HV Management (LENA4/13637)
7/7/1413:08 167-5120.23Testing new HV Management (LENA4/13637)
7/7/14 13:15178-5292.82Testing new HV Management (LENA4/13637)
7/7/1414:00 167-5120.23Return to nominal values

Last Modified: 21/08/2012