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FFT ANALOG UNIT 8938 < Recorder < Products
Recorder Option (Input units for the MEMORY HiCORDER series)

FFT ANALOG UNIT 8938

CE
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Voltage input amplifier for FFT analysis
This UNIT is equipped with circuits for two independently usable input channels. Simply slot the 8938 into the MEMORY HiCORDER for use.
Basic specifications
Input Number of channels: 2, Connector: Insulated BNC
* Input isolated from output, inter-channel isolation
Measurement ranges 5 mV to 20 V/division, 12 ranges, the measurement resolution is 1/80 of range
AC voltage for possible measurement/display using the memory function: 280 V rms
* When attached to recorder where full-scale (f.s.) = 20 divisions
10 mV to 50 V/division, 12 ranges, the measurement resolution is 1/160 of range
AC voltage for possible measurement/display using the memory function: 280 V rms
* When attached to recorder where full-scale (f.s.) = 10 divisions
Low-pass filter: 5/500/5 k/100 kHz
Anti-aliasing filter Cutoff frequency 20/40/80/200/400/800/2 k/4 k/8 k/20 k/40 kHz auto-select (linked to frequency range)
Maximum sampling rate 1 MS/s (simultaneous sampling of two channels)
Accuracy DC amplitude: ±0.4 %f.s.   Zero-position: ±0.1 %f.s.
Zero-position -50 % to 150 %, 1 % step * With zero-adjustment function
Frequency characteristics DC to 400 kHz ±3 dB   with AC coupling: 7 Hz to 400 kHz ±3 dB
Max. allowable input 400 V DC   (upper voltage which when applied to between input pins does not damage them)
Max. rated voltage to earth 370 V AC, DC   (upper voltage which when applied to input channel casing or between input channels does not damage them)
Accessories None * The input cord is optional
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