I404 - 4 Channel Charge Integrating Digital Electrometer

The I404 is intended for the measurement of small charges or corresponding currents (from pA to µA) generated by devices such as ionization chambers, in-vacuum beam position monitors, proportional chambers, and photodiodes. Four input channels make the I404 particularly well-suited to four-quadrant electrode systems used for beam centering. The I404 includes an integrated high-voltage supply, suitable for biassing detectors.

See the I400 for an electrometer offering high voltage biased inputs, suitable for thimble ionization chambers.

See the IC101 for an electrometer with a single channel.


  • Four integrator channels with common gate
  • Dynamic range <1 pA to 200 µA
  • Integrated digitization and filtering
  • Fiber-optic, RS-232, and RS-485 interfaces
  • Integrated calibration current test source
  • Full control provided of integration modes
  • External trigger capability
  • Four independent analog monitor outputs configurable to show current or position
  • Four independent frequency monitor outputs (VFC)
  • Optional high voltage output
  • On-board calculation of position function in real time


  • Quadrant photodiode readout
  • Low current and charge measurement
  • Beam position monitors
HV emco

Integrated High Voltage

  • Avoids the need for a separate external HV supply.
  • Precise programmable voltage control.
  • Choice of polarity, positive or negative, and range up to 3000V depending on the product.
  • Shared ground with measurement electronics to eliminate ground loops.
  • Short circuit protection and redundant output voltage monitoring.

Fiber Optics

Measurement data is transmitted through state-of-the-art fiber-optic cables. The benefits are numerous compared to other forms of data transmission.

  • Fiber-optics are immune to electrical interference
  • Minimal attenuation of light through fibers
  • Fast messaging over enormous distances
  • Radiation hard fiber materials

IG2 EPICS Support

Integrate device data collection and configuration into an EPICS system, without writing a single line of code using IG2.

  • Runs on Windows and Debian Linux
  • Change PV names with simple XML configuration
  • Connect to multiple Pyramid devices at once
  • Add custom scale factors and offsets on a PV basis
  • Never have to recompile
  • Professional Pyramid support for bugs and features


Configurable EPICS channel access server for G2 and G1 devices

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Ly Faraday Lõi Rắn cho Hạt Có Sạc

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