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Tel: 886.909 602 109 Email: [email protected]
Figure 3.20 Return Loss Curve Measured Store
5.
Cable Model:
It has given detailed steps for setting velocity factor and cable loss in DTF test. To make it easier to test and set
parameters, S3101A/B offers a series of common cable models for user’s recall. Users can directly use [Cable Model] menu in the
menu bar of
【
FREQ
】
to enter the interface for cable model selection. Then select the corresponding cable model through the
touch screen, knob or arrow keys, choose [Recall] menu or press
【
Enter
】
key to complete recall of cable models. Thus, Analyzer
will automatically match parameters for the selected cable based on its model, including velocity factor, cable loss, etc. Cable model
recall interface is shown in Figure 3.21.
Figure 3.21 Cable Model Select
In addition, in the menu of cable models, this Analyzer also provides [Head], [Foot], [Page Up] and [Page Down] menu to make it easier to
search cable model.
6.
DTF measurement distance and resolution:
In DTF analysis, measurement distance is influenced by sweep span and sweep points of
frequency as well as transmission speed of electromagnetic wave in the cable to be measured. The smaller the sweep span is, the longer the
