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* Loosen 3x screws on A33 Reference Mixer Switch board, then slide the board to the rear of the
instrument to connect the following two cables (N5242-20042 and N5242-20043).
— W36 (reuse) (N5242-20042 or N5222-20032) Front-panel REF 1 RCVR R1 IN to A33
reference mixer switch
— W35 (reuse) (N5242-20043 or N5222-20033) A33 reference mixer switch to front-panel REF
1 SOURCE OUT
* Torque 3x Reference Mixer Switch board screws 0515-0372 to 9 in-lbs.
— W83 (reuse) (N5242-20002 or N5222-20001) A28 port 2 bridge to A37 port 2 source attenuator
— W25 (reuse) (N5242-20048 or N5222-20038) A28 port 2 bridge to front-panel REF 2 SOURCE
OUT
* Secure W25 (N5242-20048) to side of deck with 1x tie wrap (1400-0249)
— W110 (reuse) (N5242-20004 or N5242-20262) A49 port 2 source bypass switch to A28 port 2
bridge
* Use 1/4" wrench to hold source cable connectors when tightening mating semi-rigid cables
— W109 (reuse) (N5242-20019 or N5242-20268) W9 to A49 port 2 source bypass switch
— W79 (N5242-20002) A27 port 4 bridge to A36 port 4 source attenuator
— W106 (N5242-20261) A48 port 4 source bypass switch to A27 port 4 bridge
— W105 (N5242-20267) W7 to A48 port 4 source bypass switch
— W75 (N5222-20002) A26 port 3 bridge to A35 port 3 source attenuator
— W102 (N5242-20263) A47 port 3 source bypass switch to A26 port 3 bridge
— W17 (N5222-20023) A26 port 3 bridge to front-panel REF 3 SOURCE OUT
— W21 (N5222-20025) A27 port 4 bridge to front-panel REF 4 SOURCE OUT
— W90 (N5242-20306) A43 port 3 receiver attenuator to A24 mixer brick (C)
— W37 (reuse) (N5242-20009 or N5222-20003) A33 reference mixer switch to A23 mixer brick (R1)
* Secure W37 (N5242-20009) to side of deck with 3x tie wrap (1400-0249)
— W88 (reuse) (N5242-20010 or N5222-20004) A42 port 1 receiver attenuator to A23 mixer brick
(A)
— W71 (reuse) (N5242-20005 or N5222-20002) A25 port 1 bridge to A34 port 1 source attenuator
— W100 (reuse) (N5242-20008 or N5242-20265) A50 combiner to A46 port 1 source bypass
switch
— W96 (reuse) (N5242-20007 or N5242-20264) A46 port 1 source bypass switch to A25 port 1
bridge
— W13 (reuse) (N5242-20011 or N5222-20005) A25 port 1 bridge to A33 reference mixer switch
— W101 (reuse) (N5242-20017 or N5242-20266) W5 to A47 port 3 source bypass switch
— W95 (reuse) (N5242-20020 or N5242-20269) W3 to A46 port 1 source bypass switch
Installation Note N5242-90123
Installation Procedure for the Upgrade
32
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