F460 Four-channel Fast Current Measurement Device

Download Technical PDF

Summary

Fast current and charge measurement device – ideal for:

  • Quadrant photodiode readouts
  • Beam position monitors
  • Segmented Faraday cups

Units recently sold to NSRRC II.

Key Technical Features

Key technical features

  • 4 input channels – each with independent gain and offset control
  • 0.1 nA to 1 mA (bipolar) measurement range – 4 independently selectable ranges per channel
  • +/- 0.1% full scale absolute accuracy – maintained by integrated calibration sources
  • 16 bit digitisation per measurement range – signal to noise ratio maintained on each scale
  • 1 Hz to 250 kHz simultaneous sampling speed
  • 4 output channels – analogue (16 bit DAC, +/- 10V) or digital (TTL levels into 50Ω)
  • Digital filtering – box car averaging up to 250,000 samples
  • Buffering – 50,000 contiguous samples at any sample rate
  • External triggering – start, pause and stop acquisition

Options

  • PI servo feedback controller
  • Up to +/- 3kV auxiliary HV supply

Communications

  • Ethernet, RS-232/RS-485 and fibre optic interfaces
  • EPICS Interface provided by Brookhaven National Laboratory