Specifications

42
Chapter 3: Testing Performance
Initialize the test equipment for minimum data eye width/minimum clock interval test
Initialize the test equipment for minimum data eye
width/minimum clock interval test
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.
a Set the frequency of the pulse generator. We will test in the 200 Mb/s
mode first.
The logic analyzer will be tested using a double-edge clock. 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
100 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 100 MHz plus 2% (102 MHz).
b Set the rest of the pulse generator parameters to the values shown in
the following table.
Pulse Generator Setup
Timebase Pulse Channel 2 Trigger Pulse Channel 1
Mode: Int Mode: Pulse ÷ 1 Disable (LED on) Mode: Square
Freq: was set in
previous step.
Delay: (not available in pulse mode) Delay: 0 ps
Width: Initially set to 1.5 ns.
Change later (on page 48).
Width: (not available in square
mode)
Ampl: 0.25 V Ampl: 0.25 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)