Difference between revisions of "HP 8703A"

Latest revision as of 12:56, 24 October 2011

This LCA goes from 130MHz to 20GHz with up to 1601 data points. The internal laser is at 1310 nm, but the internal modulator is compatible with 1550nm external inputs (it takes 2 hours for the modulator to "warm up" and auto-bias correctly). The Coldren group also has an 8703A with a 1550nm internal laser source.

HP 8703B users manual - similar to the 8703A

Cascade Microtech's guide to microwave measurements

Remote control[edit]

The programming guide can be found here.

To read the trace data in Matlab, run: File:Readtrace8703A.m. This saves the data in the workspace as a text variable. The File:Savetrace8703A.m converts that workspace data to numerical format and saves and plots it, but occasionally makes sign errors (maybe 1% of data points will be wrong).

To reset the GPIB bus after a communication error:

• Remove GPIB connection to computer

• Press Local

• Set to system controller

• • Sometimes it will not let you do this. If you saved the calibration data immediately after calibration, recall the data from whatever register it's in and continue with the next step. If you didn't save the data, you're screwed. Re-start the LCA.

• Use NI MAX on the computer to scan for instruments (won't find any/error message pops up)

• Set to talker/listener