Model
Amplitude
≥ 4 GHz models
400 mV
< 4 GHz models
700 mV
■
Disconnect the 50 Ω precision coaxial cable at
Ch 1
and reconnect it
to
Ch 1
through a 10X attenuator.
b. Check the A trigger system for stable triggering at limits:
■
Read the following definition: A stable trigger is one that is
consistent; that is, one that results in a uniform, regular display
triggered on the selected slope (positive or negative). This display
should
not
have its trigger point switching between opposite slopes,
nor should it roll across the screen. At horizontal scale settings of
2 ms/division and faster,
Trig'd
will remain constantly lighted. It
will flash for slower settings.
■
Press the Trigger
Slope
button to select the positive slope.
■
Adjust the Trigger
Level
knob so that there is a stable trigger.
CHECK that the trigger is stable for the test waveform on the
positive slope.
■
Press the Trigger
Slope
button to select the negative slope. Adjust the
Trigger
Level
knob so that there is a stable trigger.
■
CHECK that the trigger is stable for the test waveform on the
negative slope.
■
Enter pass or fail in the test record.
■
Leave the trigger system triggered on the positive slope of the
waveform before continuing to the next step.
Figure 34: Measurement of trigger sensitivity - 50 MHz results shown
Performance verification (MSO/DPO70000C, MSO/DPO70000DX, and DPO7000C series)
260
MSO70000C/DX, DPO70000C/DX, DPO7000C, MSO5000/B, DPO5000/B Series
Содержание DPO5000 Series
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