HP 54753A User Manual page 120

1
Figure 7-5
1
2
3
4
Single-ended TDR Measurements
Establishing the Reference Plane and Normalizing
Change the until the reflected edge is displayed at the
Position
approximate center of the display.
You should see a display similar to the one shown in Figure 7-5, however, the
risetime will depend on the quality of cable being used.
Note that the risetime of the reflected step is greater than the 40 ps of the
incident step. This difference is due to the losses in the cable and connectors.
Press the blue key followed by the
Falltime measurement and select
Press the Enter softkey.
Connect an SMA short to the end of the cable.
Press the
Clear display
should be pressed to reset averaging.
Clear display
You should see a display similar to the one in Figure 7-6.
7-12
8 key to turn on the automated
channel 1
key. Whenever an external connection is changed,
.