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Chapter 3: Testing Logic Analyzer Performance
Test Pod 2 in 250 Mb/s Mode
Test Pod 2 in 250 Mb/s Mode
1 Disconnect the E5383A Flying Lead Probe Set from Pod 1 and connect it
to Pod 2 of the logic analyzer. Do not remove the flying leads that are
connected to CLK and the data channels.
2 On the 8133A pulse generator, in the PULSE setup for CHANNEL 2, press
the COMP button to return the outputs to normal.
3 Note that the signal on the oscilloscope has moved. Change the
oscilloscope's horizontal position to 725 ps (or as required) to center the
measured pulse on the oscilloscope display.
4 Verify the DC offset and adjust it if necessary. See page 36.
5 Deskew the oscilloscope if necessary. See page 37.
6 Readjust the pulse width from the pulse generator as measured on the
oscilloscope. See page 39.
7 From the Logic Analysis System main menu, select Setup→My
1691xA→Bus/Signal...
8 Scroll to the right and unassign all Pod 1 bits.
9 Ensure that the Pod 2 threshold is set to 1 volt (see page 41).
10 Assign bits 2, 6, 10, and 14 of Pod 2.
11 Select the Sampling tab (at the top of the window). In the State Options
area, set clock Clk1 to Don't Care.
12 Set Clk2 to Both Edges.
52
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