cable. Connect the SMA short, to the remaining end of the cable.
Now connect the male SMA T connector to Ch 1 through an SMA
female to BNC male adapter.
■
Set the pulse generator output for a positive-going pulse with a rise-
time as shown in the table for your instrument, and for the fastest
possible repetition rate (at least 1 kHz). (See Table 16: Delta time
measurement settings on page 247.)
■
Set the pulse generator output for about 500 mV. (This amplitude can
be adjusted later to get a 5-division pulse on screen.)
c. Modify the initialized front-panel control settings:
■
Power on the pulse generator.
■
Touch Utilities, select User Preferences, select the Units tab, and
then select the 1-2-5 button.
■
Readjust the Trigger Level knob so the trigger level is about 50% of
the rising edge of the positive pulse.
■
Press Autoset. You may see both positive and negative pulses.
Adjust the Trigger Level knob so the trigger level is about 50% of
the rising edge of the positive pulse.
■
From the button bar, touch the Horiz/Acq button and select the
Acquisition tab. Press the RT button to turn on Real Time Only.
■
<4 GHz models: Set the horizontal SCALE as indicated in the
following table.
Table 16: Delta time measurement settings
Instrument Pulse generator rise
and fall time range
Horizontal scale setting Sample rate Delta time accuracy limit
DPO7354C ≤ 150 ps 10 ns/div 10 GS/s ≤ 6.0 ps
DPO7254C ≤ 150 ps 10 ns/div 10 GS/s ≤ 6.0 ps
DPO7104C ≤ 150 ps 10 ns/div 10 GS/s ≤ 6.0 ps
DPO7054C ≤ 150 ps 20 ns/div 5 GS/s ≤ 12.0 ps
■
Adjust the generator output or instrument vertical scale and position
as necessary to obtain at least 5 divisions of the positive pulse.
d. Set up for statistics measurements:
■
Press Run/Stop button to freeze the display.
■
From the button bar, touch Measure and select the Time tab to show
the Time Measurements menu.
■
Touch the Pos Width button.
■
Touch Setups Statistics and then touch All. Touch Reset to reset the
statistics.
Performance verification (MSO/DPO70000C, MSO/DPO70000DX, and DPO7000C series)
MSO70000C/DX, DPO70000C/DX, DPO7000C, MSO5000/B, DPO5000/B Series 247
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