34 Agilent InfiniiVision 3000 X-Series Oscilloscopes User's Guide
1 Getting Started
The trigger source is selected by looking for the first valid waveform
starting with external trigger, then continuing with the lowest number
analog channel up to the highest number analog channel, and finally (if
digital probes are connected) the highest number digital channel.
During Auto Scale, the delay is set to 0.0 seconds, the horizontal time/div
(sweep speed) setting is a function of the input signal (about 2 periods of
the triggered signal on the screen), and the triggering mode is set to Edge.
Compensate Passive Probes
Each oscilloscope passive probe must be compensated to match the input
characteristics of the oscilloscope channel to which it is connected. A
poorly compensated probe can introduce significant measurement errors.
1 Input the Probe Comp signal (see “Input a Waveform" on page 31).
2 Press [Default Setup] to recall the default oscilloscope setup (see “Recall
the Default Oscilloscope Setup" on page 31).
3 Press [Auto Scale] to automatically configure the oscilloscope for the
Probe Comp signal (see “Use Auto Scale" on page 32).
4 Press the channel key to which the probe is connected ([1], [2], etc.).
5 In the Channel Menu, press Probe.
6 In the Channel Probe Menu, press Probe Check; then, follow the
instructions on- screen.
If necessary, use a nonmetallic tool (supplied with the probe) to adjust
the trimmer capacitor on the probe for the flattest pulse possible.
On the N2862/63/90 probes, the trimmer capacitor is the yellow
adjustment on the probe tip. On other probes, the trimmer capacitor is
located on the probe BNC connector.
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