Agilent Technologies E8267D PSG, E8257D PSG manual Chapter

Peripheral Devices

N5102A Digital Signal Interface Module

Figure 11-18 Clock Setup Softkey Menu for a Parallel Port Configuration

Inactive for Input mode

Inactive for clock rates below 25 MHz

Active for only the Internal clock source selection

Inactive for clock rates below 10 MHz and above 200 MHz

The top graphic on the display shows the current clock source that provides the output clock signal at the Clock Out and Device Interface connectors. The graphic changes to reflect the clock source selection discussed later in this procedure. The bottom graphic shows the clock edges relative to the data. The displayed clock signal will change to reflect the following:

•clock phase choice

•clock skew adjustment

•clock polarity selection

2.Press the Clock Source softkey.

From this menu, select the clock signal source. With each selection, the clock routing display in the signal generator clock setup menu will change to reflect the current clock source. This will be indicated by a change in the graphic.

3.Select the clock source.

If External or Device is Selected

Press the Clock Rate softkey and enter the clock rate of the externally applied clock signal.

NOTE The clock phase and clock skew may need to be adjusted any time the clock rate setting is changed. Refer to “Clock Timing for Phase and Skew Adjustments” on page 215.

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