Technical data

6Repair Guide
110 N1911A/1912A P-Series Power Meters Service Guide
Replacing the PPMC Assembly
• The PPMC assembly is pre- programmed with N1912A firmware
• Always perform a firmware firmware to the instrument if the PPMC
assembly has been replaced
• Instrument serial number:
This can be stored in the PPMC assembly via the command:
SERV: SNUM <CHARACTER DATA>
• Instrument option(s):
This/these can be stored in the PPMC assembly via the command:
SERV: OPT “< CHARACTER DATA>”
Refer to the Programming Guide for further details on the use of these
commands.
NOTE
• Fitting a PPMC assembly that has been pre-programmed with N1912A firmware to an
N1911A power meter will generate errors; these errors will disappear once the firmware
upgrade procedure has been carried out.