Agilent Technologies 8133A Instrukcja Obsługi Strona 37

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Testing Performance 3
16800 Series Portable Logic Analyzers Service Guide 37
Set Up the Test Equipment
1 Turn on the required test equipment. Let all of the test
equipment and the logic analyzer warm up for 30 minutes
before beginning any test.
2 Set up the pulse generator according to the following
table.
a Set the frequency of the pulse generator. In this test
procedure, the logic analyzer uses both edges of the
clock to acquire data. The test frequency is half the
test clock rate because data is acquired on both the
rising edge and the falling edge of the clock. Set the
frequency to 125 MHz plus the frequency uncertainty
of the pulse generator, plus a test margin of 1%.
For example, if you are using an 8133A pulse
generator, the frequency accuracy is ±1% of setting. Use
a test margin of 1%. Set the frequency to 125 MHz plus
2% (127.5 MHz).
b Set the rest of the pulse generator parameters to the
values shown in the following table.
3 Set up the oscilloscope.
a Set up the oscilloscope according to the following
tables.
Table 10 Pulse Generator Setup
Timebase Pulse Channel 2 Trigger Pulse Channel 1
Mode: Int Mode: Pulse ÷ 1 Disable (LED on) Mode: Square
Freq: 125 MHz
plus frequency
uncertainty of
pulse generator
plus 1% test
margin.
Delay: (not available in pulse mode) Delay: 0 ps
Width: Initially set to 1.5 ns. Change
later (on page 43).
Width: (not available in square
mode)
Ampl: 0.6 V Ampl: 0.6 V
Offs: 1.0 V Offs: 1.0 V
Output: Enable (LED off) Output: Enable (LED off)
Comp: Normal (LED off) Comp: Normal (LED off)
Limit: Off (LED off) Limit: Off (LED off)
Output
: Enable (LED off) Output: Enable (LED off)
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