HP 54753A User Manual page 158

Measuring Differential Impedance
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2
Figure 8-5
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2
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Differential TDR Measurements
Measuring Differential and Common Mode Impedance
We are now ready to measure the differential impedance of the differential line.
Connect the channel 1 cable to the differential line closest to the edge
of the board.
Connect the channel 2 cable to the other differential line (Figure 8-5).
Make sure that the switch on the demo board is in the off position
(toward the outside edge of the board away from the differential line).
Press the blue key followed by the
Press the
SETUP Time base
Change the to 500 ps/div.
Scale
Change the Position until the reflected steps are in the middle of the
display (Figure 8-6).
8-10
Clr key.
key.