Keysight Technologies MXA Series Installation Note page 31

Option EXM, External Mixing Upgrade Kit, Serial Prefix = MY/SG/US5233 or ≥ MY/SG/US5606
Reassembly
1. Refer to Figure 25. To replace the top brace (1), place it in the correct position and attach the
appropriate screws. Torque to 9 inch-pounds.
Figure 25 Top Brace Replacement
2. Remove the hole plug from the AUX IF OUT hole.
3. Attach the W23 External Reference cable to the rear panel and secure with a lock washer
(2190-0102) and nut (0590-2332). Torque to 21 inch-pounds using a 9/16" nut driver.
4. Attach the W39 Aux IF Out cable to the rear panel and secure with the lock washer and nut
that came with the cable. Torque to 9 inch-pounds with a 5/16" nut driver.
Installation Note N9020-90229 31