9-2 Option 100 Fault Location and SRL
Characteristics
Overview of Characteristics
Overview of Characteristics
This chapter contains analyzer performance data for SRL and fault
location measurements. For complete specification and characteristic
information for your analyzer, see your analyzer's User's Guide.
Frequency Range Considerations
The higher frequency span available on the Agilent Technologies
8714ET/ES can provide greater resolution when making fault location
measurements. See the discussion in “Fault Location Distance Range
and Resolution” on page 9-12.
However, when the analyzer has chosen a large frequency span (based on
the user-defined start and stop distances), the performance of the system
at high frequencies may become important.
Many coaxial cables perform poorly (or not at all) above 1500 MHz. If the
cable or system you are measuring does not perform well at high
frequencies, change the fault location frequency mode to band pass. Band
pass mode may be used to limit the frequency range the analyzer will use
when making fault location measurements.
Phase Considerations
In addition to using the connector capacitance and connector length
functions to improve the connector model, you can use the electrical
length and port extension features. Electrical length and port extension
provide the same function as connector length, but these settings are
entered in units of seconds, rather than length.
SRL data can also be observed in Smith chart format. The Smith chart
can be used to verify the connector model for your SRL measurements.
See “4. Determine the Connector Model” on page 4-8 for more
information.
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