Standard Survey Product
Single Axis AC Electric Field Spectra (Selectable between the U, V and W Axis)
Units: V2/m2 /Hz
82 logarithmically spaced frequency bins
Frequency range: 10 kHz to 486.97kHz (Band width:480 Hz to 23.231kHz)
Cadence: 1 spectra every 6 seconds
NOTE: E-field booms completed deployment on October 25, 2012, data before this date should be used with caution.
File Name: rbsp-<?>_HFR-spectra_emfisis-L2_<YYYYmmdd>_<version>.cdf
Epoch: TT2000 epoch, nanoseconds since 2000.
HFR_frequencies: Center band frequency for each frequency bin. Frequencies are logarithmically spaced.
HFR_Spectra: HFR spectra data.
HFR_bins: Number of bins in the original FFT spectra that are summed together on board to produce the current frequency bin.
HBGain: Attenuator select indicator for U and V axis. 0 – Off, 1 – On.
19 dB attenuator. L2 and greater data has the appropriate gains folded into the data to provide correct science units
HBSelect: Axis channel indicator for the HFR. 0 – U axis, 1 – V axis, 2 – W axis.
SPTT: Sun Pulse time tag. Epoch of the last sun pulse.
APID: Data APID (used to trace data source)