Specifications

84
Chapter 3: Testing Performance
Test Pod 2 in 1250 Mb/s mode
Test Pod 2 in 1250 Mb/s mode
1 Leave the first E5382A Flying Lead Probe Set connected to Pod 1 of the
logic analyzer. Remove the Pod 1 flying leads 2, 6, 10, and 14 from the
SMA/Flying Lead test connectors. Do not remove the flying leads that are
connected to CLK and CLK flying leads.
2 Connect the Pod 2 E5382A Flying Lead Probe Set’s bits 6 and 14 to the
SMA/Flying Lead test connector’s pin strip connector at the 8133A pulse
generator’s Channel 2 OUTPUT.
3 Connect the Pod 2 E5382A Flying Lead Probe Set’s bits 2 and 10 to the
SMA/Flying Lead test connector’s pin strip connector at the 8133A pulse
generator’s Channel 2 OUTPUT.
4 On the 8133A pulse generator, in the PULSE setup for CHANNEL 2, press
the COMP button to return the outputs to normal.
5 Note that the signal on the oscilloscope has moved. Change the
oscilloscope’s horizontal position to 450 ps (or as required) to center the
measured pulse on the oscilloscope display.
6 Verify the DC offset and adjust it if necessary. See page 46.
7 Deskew the oscilloscope if necessary. See page 47.
8 Adjust the measured pulse width from the pulse generator to 750 ps
(minus the test margin) as described on page 72.
9 In the logic analyzer’s Setup and Trigger window, Format tab, unassign all
pod 1 bits.
10 Assign bits 2, 6, 10, and 14 of Pod 2.
11 Verify that the Pod 2 threshold is set to 1 volt (just as you did for Pod 1 on
page 53).
12 In the “Setup and Trigger...” window, Format tab, use the scroll bar at the
bottom of the window to scroll to the left. Verify that the J clock threshold
is set to Differential.
13 Re-establish the trigger function:
a In the logic analyzer’s Setup and Trigger window, select the Trigger tab,
and the Trigger Functions subtab.
b Select “Find pattern n times” and select the “Replace” button.