HST Keyword Dictionary

Space Telescope Science Institute

3700 San Martin Drive

Baltimore, MD 21212

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Keyword Definitions for the

Faint Object Camera
Unique Data Log Header

dated 14-APR-94

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XCijjKVt: CEHT i voltage sensor; Datatype: REAL*4 Units: Kilovolts; This parameter monitors both the CEHT 1 and CEHT2. The sensors (jj) monitor the 12kV and 36kV junctions. This parameter reports both the "Fine" and "Course" voltage measures. "Fine" refers to the resolution of the readout. When the voltage is low, XCijjKVC gives an estimate of the value and XCijjKVF is not useful; when the voltage is close to nominal, XCijjKVF gives a more accurate value.
NIijjKVt reports the minimum voltage OIijjKVt reports the maximum voltage For normal operations this parameter should be within: Red Yellow Yellow Red Mode Minimum Minimum Maximum Maximum Oper 48 -9.99 10.07 10.48 10.96 XC112KV Oper 96 -9.99 10.18 10.59 11.07 XC212KV

Source : PDB 40D, OMS 12.0

XCiLEDSL: Name of internal LED; Datatype: CHARACTER*08 Units: Name; One of the following names identifying the lamp: LED off None Yellow Red Blue Red Green Yellow 2

Source : PDB 40D

XCiLEDIT: internal LED intensity; Datatype: REAL*4 Units: Volts; Source : PDB 40D

XCAMiTjj: CAM i temperature; Datatype: REAL*4 Units: Degrees; NCAMiTjj reports the minimum value of the temperature at sensor jj OCAMiTjj reports the maximum value of the temperature at sensor jj For normal operations this parameter should be within: Yellow Yellow Mode Minimum Maximum Oper 48 16.00 25.71 XCAM1TP6 Oper 48 16.00 28.93 XCAM1TP8 Oper 48 16.00 23.33 XCAM1T12 Oper 48 16.00 25.71 XCAM2TP6 Oper 48 16.00 28.93 XCAM2TP8 Oper 48 16.00 23.33 XCAM2T12

Source : PDB 40D, OMS 12.0

XCEiARFS: CEHT i analog reference signal.; Datatype: Units:; Source :

XCEUiTPj: CEU i temperature; Datatype: REAL*4 Units: Degrees; NCEUiTPj reports the minimum value of the temperature at sensor j OCEUiTPj reports the maximum value of the temperature at sensor j For normal operations this parameter should be within: Yellow Yellow Mode Minimum Maximum Oper 48 -99.90 26.43 XCEU1TP1 Oper 96 -99.90 26.43 XCEU2TP1 Oper 48 -99.90 25.00 XCEU1TP2 Oper 96 -99.90 25.00 XCEU2TP2

Source : PDB 40D, OMS 12.0

XCUiFCSC: CEUi focus coil current; Datatype: REAL*4 Units: milliamps; NCUiFCSC reports the minimum value of the current OCUiFCSC reports the maximum value of the current For normal operations this parameter should be within: Yellow Yellow Mode Minimum Maximum Oper 48 65.96 72.47 XCU1FCSC Oper 96 67.18 76.86 XCU2FCSC

Source : PDB 40D, OMS 12.0

XCUiGjVL: CEUi voltage at monitor point j; Datatype: REAL*4 Units: volts; NCUiGjVL reports the minimum voltage at monitor point j OCUiGjVL reports the maximum voltage at monitor point j For normal operations this parameter should be within: Red Yellow Yellow Red Mode Minimum Minimum Maximum Maximum Oper 48 -99.99 -56.15 -51.80 -44.36 XCU1G1VL Oper 96 -99.99 -44.36 XCU1G1VL Oper 48 284.70 999.90 XCU1G2VL Oper 48 762.00 957.00 XCU1G4VL Oper 96 -47.10 -42.40 XCU2G1VL Oper 96 284.70 999.90 XCU2G2VL Oper 96 697.00 1011.00 XCU2G4VL

Source : PDB 40D, OMS 12.0

XCUiG2CR: CEU1 G2 current; Datatype: REAL*4 Units: Milliamps; NCUiG2CR reports the minimum current OCUiG2CR reports the maximum current

Source :

XCUijALC: CEUi horizontal/vertical alignment coil current; Datatype: REAL*4 Units: Milliamps; NCUiHALC reports the minimum Horizontal coil current OCUiHALC reports the maximum Horizontal coil current NCUiHALC reports the minimum Vertical coil current OCUiHALC reports the maximum Vertical coil current For normal operations this parameter should be within: Yellow Yellow Mode Minimum Maximum Oper 48 -10.60 -4.00 XCU1HALC Oper 48 11.10 17.80 XCU1VALC Oper 96 21.20 28.80 XCU2HALC Oper 96 46.20 999.90 XCU2VALC

Source : PDB 40D, OMS 12.0

XCUiHTRC: CEUi camera tube filament current; Datatype: REAL*4 Units: Milliamps; NCUiHTRC reports the minimum current OCUiHTRC reports the maximum current For normal operations this parameter should be within: Yellow Yellow Mode Minimum Maximum Oper 48 116.20 184.40 XCU1HTRC Oper 96 117.30 182.70 XCU2HTRC

Source : PDB 40D, OMS 12.0

XCUiPMTR: CEUi photomultiplier assembly trim coil current; Datatype: REAL*4 Units: Milliamps; NCUiPMTR reports the minimum current OCUiPMTR reports the maximum current For normal operations this parameter should be within: Yellow Yellow Mode Minimum Maximum Oper 48 128.30 158.00 XCU1PMTR Oper 96 131.40 161.10 XCU2PMTR

Source : PDB 40D, OMS 12.0

XCUiTRGT: CEUi target voltage; Datatype: REAL*4 Units: Volts; NCUiTRGT reports the minimum voltage OCUiTRGT reports the maximum voltage For normal operations this parameter should be within: Yellow Yellow Mode Minimum Maximum Oper 48 6.81 8.00 XCU1TRGT Oper 96 6.76 8.00 XCU2TRGT

Source : PDB 40D, OMS 12.0

XEBATMP7: EBA temperature 7 sink sensor; Datatype: REAL*4 Units: Degrees; NEBATMP7 reports the minimum temperature OEBATMP7 reports the maximum temperature For normal operations this parameter should be within: Red Yellow Yellow Red Mode Minimum Minimum Maximum Maximum Oper 48 -41.37 -41.37 -8.53 20.52 Oper 96 -41.37 -41.37 -8.53 20.52

Source : PDB 40D, OMS 12.0

XEBATMP8: EBA housekeeping temperature 8; Datatype: REAL*4 Units: Degrees; NEBATMP8 reports the minimum value of the temperature OEBATMP8 reports the maximum value of the temperature For normal operations this parameter should be within: Yellow Yellow Mode Minimum Maximum Oper 48 -31.14 5.66 Oper 96 -31.14 5.66

Source : PDB 40D, OMS 12.0

XIijjKVt: IEHT i voltage sensor; Datatype: REAL*4 Units: Kilovolts; This parameter monitors both the IEHT 1 and IEHT2. The sensors (jj) monitor the 12kV and 36kV junctions. This parameter reports both the "Fine" and "Course" voltage measures. "Fine" refers to the resolution of the readout. When the voltage is low, XIijjKVC gives an estimate of the value and XIijjKVF is not useful; when the voltage is close to nominal, XIijjKVF gives a more accurate value.
NIijjKVt reports the minimum voltage OIijjKVt reports the maximum voltage For normal operations this parameter should be within: Yellow Yellow Mode Minimum Maximum Oper 48 10.27 10.47 XI112KVt Oper 48 36.19 36.79 XI136KVt Oper 96 10.13 10.43 XI212KVt Oper 96 36.10 36.70 XI236KVt

Source : PDB 40D, OMS 12.0

XINTiTPj: INT i temperature at sensor j; Datatype: REAL*4 Units: Degrees; This parameter monitors both the INT 1 and INT 2 temperatures at four sensor points.
NINTiTPj reports the minimum temperature OINTiTPj reports the maximum temperature For normal operations this parameter should be within: Yellow Yellow Mode Minimum Maximum Oper 48 16.00 20.33 XINT1TP1 Oper 48 16.00 20.33 XINT1TP2 Oper 48 16.00 20.33 XINT1TP3 Oper 48 16.00 21.00 XINT1TP4 Oper 96 16.00 20.33 XINT2TP1 Oper 96 16.00 20.33 XINT2TP2 Oper 96 16.00 20.33 XINT2TP3 Oper 96 16.00 21.00 XINT2TP4

Source : PDB 40D, OMS 12.0

XOBETMPj: OBE housekeeping temperature at sensor j; Datatype: REAL*4 Units: Degrees; NOBETMPj reports the minimum temperature OOBETMPj reports the maximum temperature For normal operations this parameter should be within: Red Yellow Yellow Red Mode Minimum Minimum Maximum Maximum Oper 48 7.17 16.25 17.74 22.75 XOBETMP1 Oper 96 7.17 16.25 17.74 22.75 XOBETMP1 Oper 48 16.25 17.74 XOBETMP2 Oper 96 16.25 17.74 XOBETMP2 Oper 48 16.25 17.74 XOBETMP3 Oper 96 16.25 17.74 XOBETMP3 Oper 48 7.17 16.25 17.74 22.75 XOBETMP4 Oper 96 7.17 16.25 17.74 22.75 XOBETMP4 Oper 48 16.25 17.74 XOBETMP5 Oper 96 16.25 17.74 XOBETMP5 Oper 48 7.17 16.25 17.74 22.75 XOBETMP6 Oper 96 7.17 16.25 17.74 22.75 XOBETMP6

Source : PDB 40D, OMS 12.0

XPDATMjj: photon detector unit housekeeping temperature at sensor j; Datatype: REAL*4 Units: Degrees; NPDATMjj reports the minimum temperature at sensor jj OPDATMjj reports the maximum temperature at sensor jj For normal operations this parameter should be within: Red Yellow Yellow Red Mode Minimum Minimum Maximum Maximum Oper 48 -9.90 -15.31 20.00 32.58 XPDATMP9 Oper 96 -9.90 -15.31 20.00 32.58 XPDATMP9 Oper 48 -25.22 10.30 XPDATM10 Oper 96 -25.22 10.30 XPDATM10

Source : PDB 40D, OMS 12.0

XRIUiTMP: RIU i housekeeping temperature; Datatype: REAL*4 Units: Degrees; NRIUiTMP reports the minimum temperature ORIUiTMP reports the maximum temperature For normal operations this parameter should be within: Red Yellow Yellow Red Mode Minimum Minimum Maximum Maximum Oper 48 -40.10 -25.65 13.85 40.20 XRIUATMP Oper 96 -40.10 -25.65 13.85 40.20 XRIUATMP Oper 48 -40.10 -25.65 13.85 40.20 XRIUBTMP Oper 96 -40.10 -25.65 13.85 40.20 XRIUBTMP

Source : PDB 40D, OMS 12.0

XSDSiVLT: SDS2 (science data store) housekeeping voltage; Datatype: REAL*4 Units: Volts; NSDSiVLT reports the minimum voltage OSDSiVLT reports the maximum voltage For normal operations this parameter should be within: Yellow Yellow Mode Minimum Maximum Oper 48 4.34 4.88 XSDS1VLT Oper 96 0.00 0.62 XSDS1VLT Oper 48 0.00 0.62 XSDS2VLT Oper 96 4.34 4.88 XSDS2VLT

Source : PDB 40D, OMS 12.0

XViTHARM: VPU1 (video processing unit) threshold arming level; Datatype: REAL*4 Units: Volts; NViTHARM reports the minimum voltage OViTHARM reports the maximum voltage For normal operations this parameter should be within: Yellow Yellow Mode Minimum Maximum Oper 48 0.28 0.70 XV1THARM Oper 96 0.28 0.70 XV2THARM

Source : PDB 40D, OMS 12.0

XViTHEXT: VPU1 (video processing unit) threshold extent level; Datatype: REAL*4 Units: Volts; NViTHEXT reports the minimum voltage OViTHEXT reports the maximum voltage For normal operations this parameter should be within: Yellow Yellow Mode Minimum Maximum Oper 48 0.28 0.76 XV1THEXT Oper 96 0.28 0.76 XV2THEXT

Source : PDB 40D, OMS 12.0

XVPiPRLT: VPU i (video processing unit) PRL temperature; Datatype: REAL*4 Units: Degrees; This parameter monitors both the VPU 1 and VPU 2 temperatures.
NVPiPRLT reports the minimum temperature OVPiPRLT reports the maximum temperature For normal operations this parameter should be within: Yellow Yellow Mode Minimum Maximum Oper 48 -99.90 38.90 XVP1PRLT Oper 96 -99.90 38.90 XVP2PRLT

Source : PDB 40D, OMS 12.0

XC48RFMP: Focussing mirror position for the f/48 relay.; Datatype: INTEGER*4 Units: Position; The integer values range over approximately 0 to 225, each step corresponding to 0.083 mm in mirror position, which is 0.166 mm in optical path length. This is at f/48 if COSTAR is not in use or f/75 if COSTAR is used.
Source : PDB 40D, OMS 12.0

XC96RFMP: Focussing mirror position for the f/96 relay.; Datatype: INTEGER*4 Units: Position; The integer values range over approximately 0 to 225, each step corresponding to 0.083 mm in mirror position, which is 0.166 mm in optical path length. This is at f/96 if COSTAR is not in use or f/151 if COSTAR is used.
Source : PDB 40D, OMS 12.0

XNPSBjjS: Power status buffer expected status.; Datatype: INTEGER*4 Units: Status Code; This parameter reports the expected status of both the power status buffers.
Source :

XEXPTMnn: exposure stop time 1 (sc clock counts); Datatype: INTEGER*4 Units:; Telemetered values to determine the actual exposure time nn=odd: Exposure start or restart time nn=even: Exposure stop time.
Source :

HST Keyword Dictionary: 14-APR-94: (rose@stsci.edu)