HIGH FREQUENCY WAVEFORM RECEIVER
Normal Telemetry Mode:
Samples/ Channel Filter Capture Rate Sampling Snapshot/ Snapshot Frequency* Selection Rate Once Every: Rate Channel Length Resolution 6 Channel 25 kHz 128.8 sec 71.43 kHz 2048 29 ms 34.9 Hz 6 Channel(def) 16 kHz 128.8 sec 35.71 kHz 2048 57 ms 17.4 Hz 6 Channel 2 kHz 128.8 sec 4.46 kHz 2048 459 ms 2.2 Hz 6 Channel 250 Hz 18.4 sec 558.00 Hz 216 387 ms 2.6 Hz 5 Channel 25 kHz 110.4 sec 71.43 kHz 2106 29 ms 33.9 Hz 5 Channel 16 kHz 110.4 sec 35.71 kHz 2106 59 ms 17.0 Hz 5 Channel 2 kHz 110.4 sec 4.46 kHz 2106 472 ms 2.1 Hz 5 Channel 250 Hz 18.4 sec 558.00 Hz 256 459 ms 2.2 Hz 4 Channel 25 kHz 92.0 sec 71.43 kHz 2194 31 ms 32.6 Hz 4 Channel 16 kHz 92.0 sec 35.71 kHz 2194 61 ms 16.3 Hz 4 Channel 2 kHz 92.0 sec 4.46 kHz 2194 492 ms 2.0 Hz 4 Channel 250 Hz 18.4 sec 558.00 Hz 256 459 ms 2.2 Hz 3 Channel 25 kHz 64.4 sec 71.43 kHz 2048 29 ms 34.9 Hz 3 Channel 16 kHz 64.4 sec 35.71 kHz 2048 57 ms 17.4 Hz 3 Channel 2 kHz 64.4 sec 4.46 kHz 2048 459 ms 2.2 Hz 3 Channel 250 Hz 18.4 sec 558.00 Hz 256 459 ms 2.2 Hz 2 Channel 25 kHz 46.0 sec 71.43 kHz 2194 31 ms 32.6 Hz 2 Channel 16 kHz 46.0 sec 35.71 kHz 2194 61 ms 16.3 Hz 2 Channel 2 kHz 46.0 sec 4.46 kHz 2194 492 ms 2.0 Hz 2 Channel 250 Hz 18.4 sec 558.00 Hz 512 918 ms 1.1 Hz 1 Channel 25 kHz 27.6 sec 71.43 kHz 2634 37 ms 27.1 Hz 1 Cahnnel 16 kHz 27.6 sec 35.71 kHz 2634 74 ms 13.6 Hz 1 Channel 2 kHz 27.6 sec 4.46 kHz 2634 591 ms 1.7 Hz 1 Channel 250 Hz 18.4 sec 558.00 Hz 1024 1835 ms 0.5 Hz* FREQUENCY RESOLUTIONS are nominal values. Actual frequency resolution will be a function of windowing effects, i.e., the number of points in the FFT.
High Rate Telemetry Mode (WBRI):
Channel Filter Capture Rate Sampling/ Samples/ Snapshot Selection Rate Once Every: Snapshot Snapshot Length 6 Channel 25 kHz 9.2 sec 71.43 kHz 31,817 0.45 sec 5 Channel 25 kHz 9.2 sec 71.43 kHz 38,180 0.53 sec 4 Channel 25 kHz 9.2 sec 71.43 kHz 47,725 0.67 sec 3 Channel 25 kHz 9.2 sec 71.43 kHz 63,633 0.89 sec 2 Channel 25 kHz 9.2 sec 71.43 kHz 95,450 1.34 sec 1 Channel 25 kHz 9.2 sec 71.43 kHz 190,900 2.67 sec((NOTE that the WBRI operates at 25 kHz ONLY))
Filter Modes:
FILTER RATES: The four filters available are rated as follows: 250 Hz, 2 kHz, 16 kHz and 25 kHz. FILTER DYNAMIC RANGE: The dynamic range of each of the four filters is 75 dB from A/D converters adjusted up to 102 dB by programmable gain amplifiers. FILTER CHANNELS AVAILABLE: Six channels are selectable by each of the four filters. The six channels and their corresponding antenna selections are as follows:
Channel Antenna Selection WFR1 Eu WFR2 Ev or Ev+ WFR3 Ez or Ev- WFR4 Bu WFR5 Bv WFR6 BzFILTER FREQUENCY RANGES: The frequency ranges of each of the four filters are as follows:
Filter Frequency Range 250 Hz(digital) 20 Hz - 250 Hz 2 kHz(digital) 20 Hz - 2 kHz 16 kHz(digital) 20 Hz - 16 kHz 25 kHz(analog) 20 Hz - 25 kHz((In the WFR Interferometry Mode, WFR2 and WFR3 are connected to Ev+ and Ev-))