HP 54754A TDR/TDT Setup Menu
Displaying the TDR/TDT Setup Menu
5-7
Displaying the TDR/TDT Setup Menu
To display the TDR/TDT Setup menu, press the TDR/TDT Setup key on the TDR
plug-in module.
Stimulus
Pressing the
Stimulus
softkey produces a pull-down menu used to turn on or
turn off the TDR step. The differential TDR plug-in has two TDR channels. The
following table contains a list of the available stimulus menu choices and their
descriptions.
Table 5-1
Stimulus Menu Choices
Key Path TDR/TDT Setup
Stimulus
Stimulus Description
off Turns the TDR steps off for both TDR channels and the TDR
measurement system off.
1 only Turns the TDR step on for channel 1 only and enables the TDR
measurement system.
2 only Turns the TDR step on for channel 2 only and enables the TDR
measurement system.
1 and 2 Turns the TDR steps on for both channels. This mode is used to
make two independent single-ended TDR measurements.
differential Turns the differential TDR steps on for both channels. The step for
channel 1 is a positive going step while the step for channel 2 is
effectively a negative going step. This mode is used to make
differential TDR measurements
common mode Turns the common mode TDR steps on for both channels. Both
steps are positive going steps. Unlike the
1 and 2
mode, this mode
is used to make common mode measurements.
external This setup provides control for and requires an external step
generator before measurements can be made.
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