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Keysight InfiniiVision 3000 X-Series Oscilloscopes User's Guide
6
Digital Channels
Passive probe input impedance is generally specified in terms of a parallel
capacitance and resistance. The resistance is the sum of the tip resistor value and
the input resistance of the test instrument (see the following figure). The
capacitance is the series combination of the tip compensating capacitor and the
cable, plus instrument capacitance in parallel with the stray tip capacitance to
ground. While this results in an input impedance specification that is an accurate
model for DC and low frequencies, the high-frequency model of the probe input is
more useful (see the following figure). This high-frequency model takes into
account pure tip capacitance to ground as well as series tip resistance, and the
cable's characteristic impedance (Z
o
).
Figure 21
DC and Low-Frequency Probe Equivalent Circuit
Figure 22
High-Frequency Probe Equivalent Circuit
Содержание InfiniiVision 3000 X Series
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Страница 48: ...48 Keysight InfiniiVision 3000 X Series Oscilloscopes User s Guide 1 Getting Started...
Страница 62: ...62 Keysight InfiniiVision 3000 X Series Oscilloscopes User s Guide 2 Horizontal Controls...
Страница 72: ...72 Keysight InfiniiVision 3000 X Series Oscilloscopes User s Guide 3 Vertical Controls...
Страница 122: ...122 Keysight InfiniiVision 3000 X Series Oscilloscopes User s Guide 6 Digital Channels...
Страница 128: ...128 Keysight InfiniiVision 3000 X Series Oscilloscopes User s Guide 7 Serial Decode...
Страница 134: ...134 Keysight InfiniiVision 3000 X Series Oscilloscopes User s Guide 8 Display Settings...
Страница 182: ...182 Keysight InfiniiVision 3000 X Series Oscilloscopes User s Guide 11 Trigger Mode Coupling...
Страница 200: ...200 Keysight InfiniiVision 3000 X Series Oscilloscopes User s Guide 12 Acquisition Control...
Страница 210: ...210 Keysight InfiniiVision 3000 X Series Oscilloscopes User s Guide 13 Cursors...
Страница 252: ...252 Keysight InfiniiVision 3000 X Series Oscilloscopes User s Guide 15 Mask Testing...
Страница 256: ...256 Keysight InfiniiVision 3000 X Series Oscilloscopes User s Guide 16 Digital Voltmeter...
Страница 290: ...290 Keysight InfiniiVision 3000 X Series Oscilloscopes User s Guide 19 Print Screens...
Страница 324: ...324 Keysight InfiniiVision 3000 X Series Oscilloscopes User s Guide 21 Web Interface...
Страница 344: ...344 Keysight InfiniiVision 3000 X Series Oscilloscopes User s Guide 22 Reference...
Страница 370: ...370 Keysight InfiniiVision 3000 X Series Oscilloscopes User s Guide 24 FlexRay Triggering and Serial Decode...
Страница 424: ...424 Keysight InfiniiVision 3000 X Series Oscilloscopes User s Guide 28 UART RS232 Triggering and Serial Decode...