Installation Note N5222-90129 41
Installation Procedure for the Upgrade
Figure 21
Location of Cable Ties to Secure W48 (1400-0249, N5222-20101)
— W88 (reuse) (N5222-20004) A42 port 1 receiver attenuator to A23 mixer
brick (A)
— W13 (reuse) (N5222-20005) A25 port 1 receiver coupler to A33 reference
mixer switch
* If the screws that attach the reference mixer switch to the test set deck
were loosened, torque these screws now to 9 in-lbs.
— W10 (reuse) (N5222-20043) W9 to A28 port 2 receiver coupler
— W4 (reuse) (N5222-20040)W3 to A25 port 1 receiver coupler
Install New Cable(s) – A21 HMA26.5 to A23/A24 Mixer Brick
If your instrument has a new HMA26.5 (N5240-60101) installed:
If you have a legacy HMA26.5 (5087-7765) installed, you can discard this
cable.