Features:

  • Powers model 731 seismic accelerometer
  • Ultra low noise
  • Amplifies signal x1, x10, x100
  • Switchable output: acceleration or velocity
  • Battery powered
  • Wide dynamic range
  • Switchable low pass filter, 450 Hz or 100 Hz
  • Low current draw
  • Battery test light
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Temperature Range

  • 0° to 55° C (32° to 130° F)

Humidity

  • 90% of Relative Humidity, Maximum

Accuracy

  • Gain Accuracy: ±0.25 dB

Sensitivity

  • Output Sensitivity (Acceleration): 10 to 1,000 V/g
  • Output Sensitivity (Velocity): 0.1 to 10 V/in/sec

Non Linearity

  • Amplitude Nonlinearity: <1%

Power Requirement

  • Internal Batteries: (2) 9 V Alkaline Batteries

Input

  • Current to Transducer, ±20%: 2.4 mA
  • Maximum Input Voltage (Gain = 1), Output Voltage: 3.5 V RMS
  • Voltage to Transducer: 18 Vdc

Load Impedance

  • Recommended Load Impedance: >250 KiloOhms

Output Impedence

  • Output Impedance, Nominal: 2.5 KiloOhms

Frequency

  • Frequency Response, -3 dB (Velocity): 0.8 to 150 Hz

Electrical Connectors

  • Signal Input: Amphenol Plug 31-225 Twinax
  • Signal Output: BNC Connector

Output

  • Maximum Output Voltage: 3.5 V RMS

Battery Life

  • >50 Hours

Noise

  • Spectral Noise, 1 to 10 Hz, Referred to Input: <-140 dB