N1225A 4-Channel High-Resolution Laser Axis Board for VME
Show Description
The Keysight N1225A VME 4-channel high resolution laser axis board provides ultrasensitive fiber optic receivers and high-resolution distance measurements for high performance positioning systems using laser interferometry with VMEbus systems. Multiple N1225A boards can be linked together for up to 31 axes of position measurement. Functionality includes “oscilloscope like” data capture using standard web browsers.
Introduction
With the release of the Keysight N1225A firmware revision B.40, the N1225A 4-channel high-resolution laser axis board for VME introduces additional functions. This application note provides general information and updated register maps for new functionality added by firmware revision B.40
N1225A Firmware B.40 Overview
The N1225A firmware revision B.40 adds the option to select two extra bits of position resolution (0.039nm LSB vs current 0.15nm LSB) for plane mirror applications, enhances cyclic error correction (for option 200 only) to compensate not only 1st term but also 2nd term cyclic error, and implements bug fixes for the socket interface and Auto Sample data age.