34401A GPIB Read and Write

[karaage2233]

Hello. How to do a write command in an HP 34401A multimeter using NI 488.2 Communicator command? I know that reading the string in the EEPROM uses CAL:STR? command, but I can't find the write counterpart to it (unlike 3458A that has CALSTR? and CALSTR"" commands for read and write, respectively). 

[Minions]

Using the manual here, one can update the 40-character Calibration Message by using the following:

CAL:STR ’CAL 15-JUL-2025’

As almost anything can be entered within the single quotes. Note, the display will only show the first 12-characters and truncate the rest.

I would recommend against trying to change the Calibration Security Code.