Agilent Technologies E4428C, Руководство пользователя

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246 Chapter 7
Digital Signal Interface Module
Operating the N5102A Module in Input Mode
This error is reported when the digital module clock setup is not
synchronized with the rate the samples are entering the digital
module. Verify that the input clock rate matches the specified
clock rate under the clock setup menu.
804 Digital module input FIFO underflow error; There are not enough samples being produced for the current
clock rate. Verify that the digital module clock is set up properly.
This error is reported when the digital module clock setup is not
synchronized with the rate the samples are entering the digital
module. Verify that the input clock rate matches the specified
clock rate under the clock setup menu.
Figure 7-18 Clock Setup Softkey Menu for a Parallel Port Configuration
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
Inactive for Input mode
Active for only the Internal clock source selection
Inactive for clock rates below 25 MHz
Inactive for clock rates below
10 MHz and above 200 MHz