Differential TDR Measurements
Measuring Differential and Common Mode Impedance
8-10
Measuring Differential Impedance
We are now ready to measure the differential impedance of the differential line.
1
Connect the channel 1 cable to the differential line closest to the edge
of the board.
2
Connect the channel 2 cable to the other differential line (Figure 8-5).
Figure 8-5
1
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).
2
Press the
blue key followed by the Clr key.
3
Press the
SETUP Time base key.
4
Change the
Scale
to 500 ps/div.
5
Change the
Position
until the reflected steps are in the middle of the
display (Figure 8-6).
To Next Page
Loading...
