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N1231B PCI Three-Axis High Performance Laser Board with External Sampling

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Prices for: United States

* Prices are subject to change without notice. Prices shown are Manufacturer's Suggested Retail Prices (MSRP). Prices shown are exclusive of taxes.

Key Features & Specifications


  • Platform and size: PC-PCI, 98 x 312 mm
  • Number of Axes per Board: 3
  • Resolution Extension: x1024
  • External Sample and Data Hold Inputs: 4 + 4

Operation with Plane Mirror Optics

  • Resolution: 0.15 nm
  • Maximum Velocity (also limited by laser head): 2800 mm/sec


  • Position Data Update Rate: 20 MHz
  • External Asynchronous Sample Uncertainty: ± 4 ns
  • Asynchronous Data Hold Uncertainty: ± 25 ns
  • Synchronous Data Hold Uncertainty: ± 1 ns

Special Features

  • Simple programming API (Windows NT4/2000/XP)
  • Flexible hardware interface
  • On board programmable sample/hold clocks


The Keysight N1231B PCI Three-Axis Laser Board with External Sampling is a register based PCI bus board that implements three axes of laser interferometer measurement for position monitoring and closed-loop servo control. There are four external sample inputs along with four data hold inputs that allow easy synchronization with user systems. Several threshold compare registers, with both hardware outputs and interrupt capability, can be used for travel limit and in window or out of window detection functions. The dual mode hardware position outputs, controlled by the hold inputs, provide either a 32-bits/axis parallel interface or a 36-bit multiplexed interface to the 36-bit axis position data at rates up to 20MHz. The user can programmatically access the externally sampled position and velocity data, as well as software sampled position and velocity data, over the PCI bus at rates up to 100kHz (3 axes of position and velocity) or 200kHz (position or velocity only).

  • Three axes of laser measurement on one 98x312mm board
  • Four external sample inputs (1 per axis and 1 system sample)
  • Four external data hold inputs (for hardware position outputs)
  • Flexible hardware interface
  • On board programmable sample/hold clocks
  • Simple programming API (Windows NT4/2000/XP)
  • 0.15nm (lambda/4096) using Plane Mirror interferometers
  • PCI Compliant