PSP FIELDS Digital Fields Board (DFB), Differential Voltage data:
The DFB is the low frequency, less than 75 kHz, component of the FIELDS experiment on the Parker Solar Probe spacecraft, see reference [1] below. For a full description of the FIELDS experiment, see reference [2]. For a description of the DFB, see reference [3].
DFB burst waveform data consist of short bursts of time-series data from various FIELDS sensors. These data have been filtered by both analog and digital filters [3]. These data are pre-sorted by onboard competitive selection algorithms described in [3] before storage by FIELDS. A subset of this stored burst data is telemetered to Earth for scientist-selected regions of interest.
The Level 2 data products contained in this data file have been calibrated for:
Calibrations for the FIELDS voltage sensor preamplifiers have not been implemented as the preamplifier response is flat and equal to one through the DFB frequency range. Corrections for plasma sheath impedance gain and antenna effective length have not been applied to voltage sensor signals. These corrections will be applied in the Level 3 DFB data products. Therefore, all voltage sensor quantities when present in these Level 2 data products are expressed by using units of Volts. Likewise, all magnetic field quantities when present in these Level 2 data products are expressed by using units of nT.
The Level 2 voltage data products when present in these data files are expressed in sensor coordinates: [dV12,dV34] for voltage measurements. Likewise, the Level 2 search coil magnetomete data products when present in these data files are expressed in sensor coordinates: [u,v,w] for magnetic field measurements.
The time resolution of the DFB burst waveform data can vary by multiples of 2^N. During encounter when PSP is within 0.25 AU of the Sun, the DFB burst waveform data cadence is typically 150,000 samples/s. This rate is the sample rate of the analog to digital converters, ADC, and data taken at this rate do not pass through a digital filter.
References:
Version:2.3.1
PSP FIELDS Digital Fields Board (DFB), Differential Voltage data:
The DFB is the low frequency, less than 75 kHz, component of the FIELDS experiment on the Parker Solar Probe spacecraft, see reference [1] below. For a full description of the FIELDS experiment, see reference [2]. For a description of the DFB, see reference [3].
DFB burst waveform data consist of short bursts of time-series data from various FIELDS sensors. These data have been filtered by both analog and digital filters [3]. These data are pre-sorted by onboard competitive selection algorithms described in [3] before storage by FIELDS. A subset of this stored burst data is telemetered to Earth for scientist-selected regions of interest.
The Level 2 data products contained in this data file have been calibrated for:
Calibrations for the FIELDS voltage sensor preamplifiers have not been implemented as the preamplifier response is flat and equal to one through the DFB frequency range. Corrections for plasma sheath impedance gain and antenna effective length have not been applied to voltage sensor signals. These corrections will be applied in the Level 3 DFB data products. Therefore, all voltage sensor quantities when present in these Level 2 data products are expressed by using units of Volts. Likewise, all magnetic field quantities when present in these Level 2 data products are expressed by using units of nT.
The Level 2 voltage data products when present in these data files are expressed in sensor coordinates: [dV12,dV34] for voltage measurements. Likewise, the Level 2 search coil magnetomete data products when present in these data files are expressed in sensor coordinates: [u,v,w] for magnetic field measurements.
The time resolution of the DFB burst waveform data can vary by multiples of 2^N. During encounter when PSP is within 0.25 AU of the Sun, the DFB burst waveform data cadence is typically 150,000 samples/s. This rate is the sample rate of the analog to digital converters, ADC, and data taken at this rate do not pass through a digital filter.
References:
| Role | Person | |
|---|---|---|
| 1. | PrincipalInvestigator | spase://SMWG/Person/Stuart.D.Bale |
| 2. | MetadataContact | spase://SMWG/Person/Robert.M.Candey |
| 3. | MetadataContact | spase://SMWG/Person/Lee.Frost.Bargatze |
Parker Solar Probe, PSP, FIELDS Instrument Suite Description: Bale, S.D., Goetz, K., Harvey, P.R. et al., The FIELDS Instrument Suite for Solar Probe Plus, Space Sci Rev 204, 49–82 (2016)
Parker Solar Probe, PSP, FIELDS Instrument Suite, Digital Fields Board, DFB, Description: Malaspina, D.M., Ergun, R.E., Bolton, M. et al., The Digital Fields Board for the FIELDS Instrument Suite on the Solar Probe Plus Mission: Analog and Digital signal Processing, JGR Space Physics, 121, 5088-5096 (2016)
Parker Solar Probe, PSP, FIELDS Instrument Suite, Data Description, Spacecraft Operations Center, SOC, Web Site, UC Berkeley
Parker Solar Probe, PSP, FIELDS Instrument Suite, Rules of the Road, Spacecraft Operations Center, SOC, Web Site, UC Berkeley
Parker Solar Probe, PSP, Mission Overview, hosted by the Applied Physics Laboratory, Johns Hopkins University
Access to Data in CDF Format via ftp from SPDF
Access to Data in CDF Format via http from SPDF
Access to ASCII, CDF, and Plots via NASA/GSFC CDAWeb
Epoch Time Tags in Terrestrial Time 2000, TT2000, for Digital Fields Board, DFB, Burst Memory, DBM, AC-coupled Waveform data
FIELDS Digital Fields Board, DFB, Burst Memory, DBM, Sample Rate for AC-coupled Differential Voltage Waveform data
FIELDS Digital Fields Board, DFB, Burst Memory, DBM, Differential Voltage Waveform Time relative to the start of the burst expressed by using Terrestrial Time 2000, TT2000
FIELDS Digital Fields Board, DFB, Burst Memory, DBM, Differential Voltage Waveform Time relative to the start of the burst measured in seconds
FIELDS Digital Fields Board, DFB, Burst Memory, DBM, AC-coupled Differential Voltage Sensors 1-2 Antenna pair, Dipole Mode data
FIELDS Digital Fields Board, DFB, Burst Memory, DBM, AC-coupled Differential Voltage Sensors 1-2 Antenna pair, Dipole Mode data, root mean square, rms, burst value
FIELDS Digital Fields Board, DFB, Burst Memory, DBM, AC-coupled Differential Voltage Sensors 1-2 Antenna pair, Dipole Mode data, maximum burst value
FIELDS Digital Fields Board, DFB, Burst Memory, DBM, AC-coupled Differential Voltage Sensors 1-2 Antenna pair, Dipole Mode data, maximum burst value
FIELDS Digital Fields Board, DFB, Burst Memory, DBM, AC-coupled Differential Voltage Sensors 1-2 Antenna pair, Dipole Mode data, minimum burst value
FIELDS Digital Fields Board, DFB, Burst Memory, DBM, AC-coupled Differential Voltage Sensors 3-4 Antenna pair, Dipole Mode data
FIELDS Digital Fields Board, DFB, Burst Memory, DBM, AC-coupled Differential Voltage Sensors 3-4 Antenna pair, Dipole Mode data, root mean square, rms, burst value
FIELDS Digital Fields Board, DFB, Burst Memory, DBM, AC-coupled Differential Voltage Sensors 3-4 Antenna pair, Dipole Mode data, maximum burst value
FIELDS Digital Fields Board, DFB, Burst Memory, DBM, AC-coupled Differential Voltage Sensors 3-4 Antenna pair, Dipole Mode data, maximum burst value
FIELDS Digital Fields Board, DFB, Burst Memory, DBM, AC-coupled Differential Voltage Sensors 3-4 Antenna pair, Dipole Mode data, minimum burst value
FIELDS Digital Fields Board, DFB, Burst Memory, DBM, AC-coupled Differential Voltage Sensor 5 Antenna, Monopole Mode data
FIELDS Digital Fields Board, DFB, Burst Memory, DBM, AC-coupled Differential Voltage Sensor 5 Antenna, Monopole Mode data, root mean square, rms, burst value
FIELDS Digital Fields Board, DFB, Burst Memory, DBM, AC-coupled Differential Voltage Sensor 5 Antenna, Monopole Mode data, maximum burst value
FIELDS Digital Fields Board, DFB, Burst Memory, DBM, AC-coupled Differential Voltage Sensor 5 Antenna, Monopole Mode data, maximum burst value
FIELDS Digital Fields Board, DFB, Burst Memory, DBM, AC-coupled Differential Voltage Sensor 5 Antenna, Monopole Mode data, minimum burst value
Epoch Time Tags in Terrestrial Time 2000, TT2000, for FIELDS Instrument Suite Data Quality Flags
FIELDS Instrument Suite Data Quality Flags