HP 54753A User Manual page 131

5 Connect an SMA short to the end of the cable.
6 Press the Continue
7 Remove the SMA short and connect an SMA 50 ohm load to the end of
the cable.
8 Press the
Continue
9 Remove the 50 ohm load and re-connect the cable to the demo board.
10 Press the
Clear display
should be pressed to reset averaging.
Clear display
Next we will use the oscilloscopes impedance measurement feature to measure
the impedance of the narrow trace discontinuity.
Press the
1 SETUP Channel 1/3
2 Press the Alternate scale . . .
3 Press the Units
4 Press the
Enter
5 Press the Done
6 Press the
SETUP Marker
7 Press the
Reference
8 Press the Marker units . . .
9 Press the Vertical units
10 Press the
Done
softkey.
softkey.
key. Whenever an external connection is changed,
key.
softkey.
softkey and select
Ohm
softkey.
softkey.
key.
softkey to select
softkey.
softkey to select
softkey.
Single-ended TDR Measurements
Measuring Transmission Line Impedance
.
.
ref plane
.
Ohm
7-23