Operation
34
Clock Synthesizer 13.5 GHz User Guide
4.1.2
Performance Recommendations
Follow the following recommendations for best performance:
1.
When using differential mode connection for OUT/OUT
¯¯¯,ensure the
cables are phase balanced. If the electrical length of one cable is a
significant fraction of a unit interval longer than the other, the quality
of the differential signal will be degraded.
2.
Keep cable lengths short and minimize number of cable bends.
3.
When using a single port of differential output channel for single-
ended measurements, the complementary port must be terminated
with a 50 Ω termination
.
4.1.3
Connector Care
The N4963A clock synthesizer 13.5 GHz features high-quality SMA connectors
for the front and rear panel Input and Output, RF connections. Connector
damage will degrade signal fidelity.
Refer to the N4960-90030 N495xA through N498xA Connector Care Reference
Guide at
www.agilent.com/find/N4963A
.
Agilent Technologies also recommends the following:
•
Use a 7 to 10 in-lbs torque wrench when attaching connectors.
•
Consider using connector savers to prolong performance and minimize
damage.
•
Differential connectors may be used single-ended if second end terminated
in 50
Ω
.
Inspect the connectors for the following:
•
Worn or damaged threads
•
Scratches to mating surface
•
Burrs and loose metal particles
•
Dust or foreign material in the space surrounding the center pin (type K
only)
•
Ensure that female contacts are straight and aligned
Clean the connectors as described in the following procedure. Cleaning
connectors with alcohol shall only be done with the instruments power cord
removed, and in a well-ventilated area. Allow all residual alcohol moisture to
evaporate, and the fumes to dissipate prior to energizing the instrument.
1.
Remove any dust or loose particles using a low-pressure air source.
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