Single-ended TDR Measurements
Measuring Transmission Line Impedance
7-19
Measuring Transmission Line Impedance
This section shows how to measure transmission line impedance. To perform
the tasks in this section, you need the following:
• 1 good quality SMA cables one meter in length, such as the HP 8120-4948
cable.
• 1 demo board (54754-66503) supplied with the TDR plug-in.
• 1 SMA short supplied with the TDR plug-in.
• 1 SMA 50 ohm load supplied with the TDR plug-in.
• 1 HP 54754A or HP 54753A TDR Module.
The following procedure shows how to perform an impedance measurement.
1
Connect a 1 m SMA cable to channel 1 of the TDR plug-in module.
2
Connect the other end of the cable to the demo board’s single
transmission line connector that is closest to the narrow trace
(Figure 7-11).
Figure 7-11
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