Generating Digital Data - Agilent Technologies X Series User Manual

Timing for Phase and Skew Adjustments" on page 264
10. Enter the skew adjustment that best positions the clock with the valid portion of the data.
11. Press the Clock Polarity Neg Pos softkey to Neg.
This shifts the clock signal 180 degrees, so that the data starts during the negative clock
transition. This has the same affect as selecting the 180 degree phase adjustment.
12. Make the clock polarity selection that is required for the device being tested.
13. Press the Return hardkey to return to the first- level softkey menu.
The clock source selection is also reflected in the first- level softkey menu graphic. For example, if
the device is the new clock source, the graphic will show that the frequency reference is now
connected to the DUT and the DUT has an input clock line going to the N5102A module.

Generating Digital Data

Press the N5102A Off On softkey to On.
Digital data is now being transferred through the N5102A module to the device. The green status
light should be blinking. This indicates that the data lines are active. If the status light is solidly
illuminated (not blinking), all the data lines are inactive. The status light comes on and stays on
(blinking or solid) after the first time the N5102A module is turned on (N5102A Off On to On). The
status light will stay on until the module is disconnected from its power supply.
The interface module can only be turned on while a modulation format is active. If the modulation
format is turned off while the module is on, the module will turn off and an error will be reported.
NOTE If changes are made to the baseband data parameters, it is recommended that you
first disable the digital output (N5102A Off On softkey to Off) to avoid exposing your
device and the N5102A module to the signal variations that may occur during the
parameter changes.
Agilent X-Series Signal Generators User's Guide
Digital Signal Interface Module (Option 003/004)
Operating the N5102A Module in Output Mode
for more information on skew settings.
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