Keysight N5221A/22A Service Guide 6-75
Replaceable Parts
Replaceable Parts Listings
4-Port Configuration, Option 417
Bottom Assemblies, 4-Port, Option 417
Reference
Designator
Part Number
a
Qty Description
A19 N5240-60163
Was N5245-60003
1 Test set motherboard
A20
N5240-60062
b
Was N5240-60045
1 IF multiplexer board
A21 5087-7765 1 LO Multiplier/amplifier 26.5 HMA26.5)
A22 5087-7139
5087-6139
1Splitter
A23
A24
5087-7829
Was 5087-7766
2Mixer brick
A25
A26
A27
A28
5087-7757 4 Test port 1 receiver coupler
Test port 3 receiver coupler
Test port 4 receiver coupler
Test port 2 receiver coupler
A29
A30
A31
A32
5087-7813 4 Test port 1 coupler
Test port 3 coupler
Test port 4 coupler
Test port 2 coupler
A33 5087-7758 1 Reference mixer switch
A34
A35
A36
A37
33321-60077 4 Test port 1 source attenuator
Test port 3 source attenuator
Test port 4 source attenuator
Test port 2 source attenuator
A42
A43
A44
A45
33321-60078 4 Port 1 receiver attenuator
Port 3 receiver attenuator
Port 4 receiver attenuator
Port 2 receiver attenuator
N5240-60058 2 Front panel LED board
a. Part numbers in italic typeface are for rebuilt exchange assemblies. Refer to “Rebuilt-Exchange Assemblies” on
page 6-4.
b. All new units built after August 2009, no longer use the N5242-60031 cable that was attached to connector
P1001 and Source 2. As a result of this change, the IF multiplexer boards have had their P1001 connectors
removed. If your instrument contains a N5242-60031 cable, remove it from your instrument.
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