Keysight Technologies N5244/5B Service Manual page 390

Replaceable Parts
Replaceable Parts Listings
b. Some PNA models have newer model A27/A28 mixer blocks installed. A68/A69 3 dB attenuators are only applicable to
instruments with legacy 5087-7323/5087-6323 mixer bricks. The new 5087-7417 mixer brick have the 3 dB pads
integrated into the mixer brick assembly. Legacy A27/A28 mixer bricks use the 5245-20021 semi-rigid cable. New mixer
bricks use the N5245-20191 semi-rigid cable.
c. The A26 splitter (5067-4086) and N5245-20013, N5245-20022, N5245-20023, N5245-20101, and N5245-20150 cables
are only used with a legacy HMA26.5 p/n: 5087-7765. If you are unclear which HMA26.5 assembly your PNA has installed,
refer to Chapter 7 Repairs and
option-model in Chapter 6 "2-Port Configurations, Serial Number Prefixes <6021" on page 6-34
Configuration, Serial Number Prefix <6021" on page
6-156
Figure 7-20 on page 45 and for details on A26 splitter and cabling , refer to your
6-129.
and
Keysight N5244B/45B Service Guide
"4-Port