Hioki 8938 FFT ANALOG UNIT

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