Keysight Technologies N5244AU- 942, Installation Note

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Installation Note N5245-90012 29
Installation Procedure for the Upgrade
3. Connect cable W2 (N5245-20100) between the A10 source 2 board and
the A17 (source 2) synthesizer board, positioning the cable in the wire
looms. Tighten the cable connectors to 10 in-lbs using a 5/16-in torque
wrench.
4. Connect the loose end of new gray flex cable W77 (N5242-60030) on the
A14 frequency reference board (J7). (The other end of this cable was
previously connected to J5 of the source 2 synthesizer board.)
Step 25.Install the Test Set Cables
Flexible Cables Required for Upgrading to an Option 419 PNA
Install the following flexible cables in the order listed. To see images showing
the location of these cables, click either of the Chapter 6 bookmarks “Bottom
RF Cables, 4-Port, Option 419” in the PDF Service Guide
1 . New parts are listed
in Table 1 on page 8 .
— W62 (N5242-60021)A27 mixer brick (R1) to A24 IF multiplexer (P411)
— W63 (N5242-60022)A27 mixer brick (R2) to A24 IF multiplexer (P412)
The three 13.5 GHz Synthesizer boards included in this kit are the RoHS
compliant N5240-60076 boards. These new boards are not compatible
with the old N5230-60002 13.5 GHz Synthesizer boards. If the boards
installed in your PNA are the old N5230-60002, you must replace ALL of
them with the N5240-60076 boards included in this kit - refer to your PNA
Service Guide’s chapter 7 for instructions. If your PNA already contains the
new boards, scrap the two extra N5240-60076 boards included in this kit.
For the new N5240-60076 boards to function properly in your PNA, you
must upgrade your PNA firmware to rev A09.33xx or above. Download PNA
firmware at:
http://na.support.keysight.com/pna/firmware/firmware.html .
Follow instructions carefully when making cable connections, especially
wire harness connections. Incorrect connections can destroy components,
resulting in additional customer costs.
Be careful not to damage the center pins of the semirigid cables. Some
flexing of the cables may be necessary but do not over-bend them.
Use a 5/16-in torque wrench set to 10 in-lbs on all cable connections
except the front and rear panel bulkhead connectors. On these, use a 9
mm nutsetter or open end torque wrench set to 21 in-lb.