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Highlights

General

  • 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

Timing

  • 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
 

Key Specifications

Download Data Sheet
Bus
PC-PCI (33MHz) PCI local bus spec rev 2.2
Max Data rate for direct hardware outputs (kHz)
20000
Max Data rate over bus (kHz)
400 (I/O capability of board if reading one axis, ignoring SW and HW delay of controller)
Number of Axes per board
3
Plane Mirror (PM) Resolution (nm)
0.15
System PM velocity limit (mm/s) * depends on laser head, axis board and receiver capability
± 1107*
Bus
Max Data rate for direct hardware outputs (kHz)
Max Data rate over bus (kHz)
Number of Axes per board
Plane Mirror (PM) Resolution (nm)
System PM velocity limit (mm/s) * depends on laser head, axis board and receiver capability
PC-PCI (33MHz) PCI local bus spec rev 2.2
20000
400 (I/O capability of board if reading one axis, ignoring SW and HW delay of controller)
3
0.15
± 1107*
View More
Bus:
PC-PCI (33MHz) PCI local bus spec rev 2.2
Max Data rate for direct hardware outputs (kHz):
20000
Max Data rate over bus (kHz):
400 (I/O capability of board if reading one axis, ignoring SW and HW delay of controller)
Number of Axes per board:
3
Plane Mirror (PM) Resolution (nm):
0.15
System PM velocity limit (mm/s) * depends on laser head, axis board and receiver capability:
± 1107*
N1231B PCI Three-Axis Laser Board with External Sampling

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