PTC Power-Up Test
OBSID 0x50000141, 2009-05-30 (Commissioning Phase)
1. Test Basics
Data were downloaded from ops_1@chesterfield on 2009 Jun 3 with
the export utility from HIPE (BUILDNUM 229). Converted format
was selected.
- bias voltages in NHK: 31.1, 31.3, 31.4, 127.6 mV (PSW, PMW, PLW, PTC)
- bias frequency in NHK: 131.1 Hz
- phases in NHK: 179.3, 179.3, 182.1, 207.5 deg (PSW, PMW, PLW, PTC)
Minor problem: Large forward-and-back, two-sample timing jumps in
PHOTF/TIME at changes in heater setting.
Minor problem: Readout of NHK/TCHTRV saturates at 2.4 V (32767 ADU),
although applied heater voltage clearly exceeds that in this test.
2. Data Processing
Not much more than adding PHOTOFF/PHOTOFFxxx in to the PHOT/PHOTFARRAYxxx,
using PHOT/TIME and PHOTOFF/TIME to time coordinate.
3. Results
- 50000141.pdf, 8 fixed non-zero voltages applied
to TCHTRV with approx. 1000 sec wait time
4. Conclusions
Looks like it worked OK.
CDD, 2009 Jun 4