54 Installation Note N5222-90114
Installation Procedure for the Upgrade
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Step 36. Install the New Test Set Cables and Install Cable Clamps on
Ferrite Beads
This step contains the following:
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“Install the Flexible Cables Required for Upgrading to an Option 405 PNA”
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“Install the Semirigid Cables Required for Upgrading to an Option 405
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“Connect New Port 4 N5240-60098 (x1) and Verify Port 2 N5240-60097
Blue Bias-Tee Combiner Cables and Clamps from the A73 and A74 Bias
Tees “RF-IN” to the A70 LFE Board “Port2” and “Port4” Connectors and
Install Clamps onto the Ferrite Beads” on page 64
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“Connect New N5240-60098 (x1) Port 3 and Verify N5240-60098 Port 1
Blue Bias-Tee Combiner Cables and Clamps from the A71 and A72 Bias
Tees “RF-IN” to the A70 LFE Board “Port1” and “Port3” Connectors and
Install Clamps onto the Ferrite Beads” on page 65
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 semi-rigid cables. Some
flexing of the cables may be necessary but do not over-bend them.
To avoid damage when connecting and torquing the bias T combiner
semirigid cables, always use a wrench to hold the bias T combiner
connectors.
Use a 5/16-in torque wrench set to 10 in-lbs on all cable connections
except the front and rear panel bulkhead connectors. Torque these
connections to 21 in-lb.
Cables that are to be reinstalled are designated with “reuse.”