Technical data
6Repair Guide
70 N1911A/1912A P-Series Power Meters Service Guide
PPMC (Processor PCI Mezzanine) Assembly
Keysight Part 
Number
Description Visual
N1911-66500 
(single-channel 
PPMC PCA)
N1912-66500 
(dual-channel PPMC 
PCA)
PPMC PCA
Note:
• The same assembly is used for both 
N1911A and N1912A models
• N1911-66500 (single-channel PPMC PCA) 
comes pre-programmed with N1911A 
firmware
• N1912-66500 (dual-channel PPMC PCA) 
comes pre-programmed with N1912A 
firmware
• Refurbished PPMC assemblies are not 
available
• The PPMC assembly must be programmed 
once it has been installed (see “Additional 
Repair Notes” on page 108)
• Ribbon cable 8121-1076 is supplied 
separately.
Top/ B o ttom  Vi e w s
8121-1076










