HP 85325A Operating And Service Manual page 50

General Information
Maximum RF Cable Lengths
The loss through the HP 85326A and the associated 1 meter cable is about
1.6 dB. The loss associated with either the L or L cables cannot exceed 3.2
R T
dB.
If using an HP 85381A type cable, the length should not exceed 5 meters.
CAUTION
The damage level for the HP 11970x mixer is +20 dBm. This can occur if
the ALC loop is broken and the proper setup procedure was not used for the
HP 85325A internal attenuator values.
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