17
Operating the Probe
130 ohm Resistive Signal Pin (orange) and Solder-down Ground Lead
Input Impedance
The E5382A probes have an input impedance which varies with frequency, and
depends on which accessories are being used. The following schematic shows
the circuit model for the input impedance of the probe when using the 130
Ω
resistive signal pin (orange) and the solder-down ground wire. This model is a
simplified equivalent load of the measured input impedance seen by the target.
Equivalent load model
Measured versus modeled input impedance
2
1
8
6
10
4
4
2
1
8
6
4
2
1
8
6
4
2
10 1
M
ea
su
re
d
M
od
el
10
4
6 8 1
2
4
6 8 1
2
4
6 8 1
Frequency
2
4
6 8 1
2
4
6 8 1
2
4
6
10
9
Содержание E5382A
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Страница 13: ...2 Operating the Probe ...
Страница 64: ...64 Operating the Probe Combining grounds ...
