Keysight X Series Installation Notes page 16

Upgrade Instructions
A21 Wideband Digital IF Removal
13.Referring to Figure
Digital IF assembly in the area shown (1).
14.Pull on the two board extractors (2) and remove the A21 Wideband Digital IF assembly from
the instrument. Be careful not to damage any of the cables that were unplugged.
Figure 9 A21 Wideband Digital IF Removal
If the instrument has Option R40, the A22 Ultra-Wideband Analog IF will also need to be
removed, as seen in
two assemblies do not need to be disconnected.
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9, unplug all the coax cables that are connected to the A21 Wideband
Figure 10. If done carefully, the cables that interconnect between these
Installation Note N9042-90012