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Description of the Upgrade
Installation Procedure for the Upgrade
These cables may be discarded - they will not be reinstalled.
3. Leave the gray flexible cables, the wire harnesses, and the ribbon cables
Step 7. Remove the A23 Mixer Brick Assembly
Remove the A23 mixer brick assembly from the PNA. For instructions, click the
Chapter 7 bookmark, "Removing and Replacing the A23 and A24 Mixer Bricks"
in the PDF Service Guide
20
Reference
Qty
a
Type
Designator
W141
SR
1
W143
SR
1
a. SR = semirigid coaxial cable.
—W70 (N5222-20073) A21 HMA26.5 to A23 mixer brick
—W48 (N5222-20003) A33 reference mixer switch to A23 mixer brick (R1)
—W12 (N5222-20068) A29 port 1 coupler to front-panel Port 1 CPLR THRU
—W14 (N5222-20070) A29 port 1 coupler to front-panel Port 1 CPLR ARM
—W24 (N5222-20069) A32 port 2 coupler to front-panel Port 2 CPLR THRU
—W26 (N5222-20071) A32 port 2 coupler to front-panel Port 2 CPLR ARM
—W64 (N5242-60025) A23 mixer brick (R1) to A20 IF multiplexer (P601)
—W65 (N5242-60026) A23 mixer brick (R2) to A20 IF multiplexer (P801)
—W149 (N5247-60023) A20 IF multiplexer board P603 to A12 SPAM board
J2 (2-port)
—W150 (N5247-60024) A20 IF multiplexer board P203 to A12 SPAM board
J5 (2-port)
connected where possible. Any that are removed should be labeled for
reconnection later.
1
1. See
"Downloading the Online PNA–X Service Guide" on page
Description
A55 noise downconverter to A7 noise receiver board LO
A55 noise downconverter to A7 noise receiver board RF
.
11.
Installation Note N5242-90127
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