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Performance verification (MSO/DPO70000C, MSO/DPO70000DX, and DPO7000C series)
264
■
Leave the trigger system triggered on the positive slope of the
waveform before continuing to the next step.
■
From the button bar touch Trig, select the A Event tab, and set the
Source to Line.
■
If you are using a generator amplitude of 200 mV, skip to step 4.e.
■
If the generator frequency is different for the B trigger, set the
generator frequency to the frequency in the table that corresponds to
the amplitude in the table. (See
4 GHz models
■
From the button bar touch Trig, select the A->B Seq tab, and touch
the A then B Trig After Time button.
■
Select the B Event tab, and touch the Set To 50% button.
■
CHECK that a stable trigger is obtained for the test waveform for
both the positive and negative slopes of the waveform. Use the
Trigger Level knob to stabilize the A trigger. Touch Level and use
the keypad or the multipurpose knob/Fine button to stabilize the B
trigger. Touch one of the Slope buttons to switch between trigger
slopes. (See
results shown
■
Enter pass or fail in the test record.
■
Leave the B trigger system triggered on the positive slope of the
waveform before continuing to the next step. Also, return to the
A trigger: select the A->B Seq tab and touch the A->B Sequence
A Only button. Then select the A Event tab.
■
From the button bar touch Trig, select the A Event tab, and set the
Source to CH1.
■
Press the X (Close button).
e. ≥ 4 GHz models: Repeat step 4.d until each frequency in the table is
checked. (See
Table 18: Trigger settings for ≥ 4 GHz models
page 263.)
f.
Display the test signal (Aux trigger at bandwidth):
■
Set the Horizontal Scale to 1 ns.
■
< 4 GHz models: Remove the attenuator and reconnect the cable to
Ch 1.
■
≥ 4 GHz models: Reconnect the cable to Ch 1.
■
Set the generator frequency to full bandwidth as follows:
Model
≥ 4 GHz models
< 4 GHz models
■
Set the generator amplitude on screen as follows:
MSO70000C/DX, DPO70000C/DX, DPO7000C, MSO5000/B, DPO5000/B Series
Table 18: Trigger settings for ≥
on page 263.)
Figure 34: Measurement of trigger sensitivity - 50 MHz
on page 260.)
Generator frequency
1 GHz
250 MHz
on
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