Displaying The Tdr/Tdt Setup Menu; Stimulus - HP 54753A User Manual

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
Stimulus
off
1 only
2 only
1 and 2
differential
common mode
external
Key Path TDR/TDT Setup Stimulus
Description
Turns the TDR steps off for both TDR channels and the TDR
measurement system off.
Turns the TDR step on for channel 1 only and enables the TDR
measurement system.
Turns the TDR step on for channel 2 only and enables the TDR
measurement system.
Turns the TDR steps on for both channels. This mode is used to
make two independent single-ended TDR measurements.
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
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.
This setup provides control for and requires an external step
generator before measurements can be made.
HP 54754A TDR/TDT Setup Menu
Displaying the TDR/TDT Setup Menu
5-7