Keysight Technologies N5244/5B Service Manual page 585

Repair and Replacement Procedures
Removing and Replacing the A25 HMA26.5
Verify the Model/Version of HMA26.5 Installed
This upgrade kit contains components for use with PNA models using the
legacy HMA26.5 part number 5087-7765. If your PNA has the newer HMA26.5
part number N5240-60101 installed you may discard these parts:
— A26 splitter 5067-4086
— W52 N5245-20013
— W53 N5245-20023
— W54 N5245-20022
The new N5240-60101 HMA26.5 has the splitter integrated into the assembly.
Refer to Figure 7-20 on page 7-45.
Figure 7-20 Comparison of Legacy HMA26.5 (5087-7765) and New HMA26.5
(N5240-60101)
Keysight N5244B/45B Service Guide 7-45