I am trying to perform cable correction on the 4285A LCR using GPIB commands. Every time I send the command the correction starts going for a while then returns error 43 Measurement Failed. I don't know what the problem is, I am making sure to send a cable length of 1m first berfore performing correction. It happens when performing both open and short correction. Pressing the soft keys on the front of the instrument the measurement completes all the way through.