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1256E User Manual
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General.........................................................................................................................................7-1
Digital Module Ports..................................................................................................................7-1
Asynchronous Digital Operation............................................................................................7-1
Synchronous Digital Operation .............................................................................................7-2
Mixing Synchronous and Asynchronous Modes of Operation ..............................................7-2
Specifying Ports on a Digital Module ....................................................................................7-3
Selecting the Mode of Operation...........................................................................................7-4
Enabling and Disabling the Ports ..........................................................................................7-5
Using the Asynchronous Mode of Operation ........................................................................7-5
Using the Synchronous Mode of Operation ..........................................................................7-7
Setting Up the Synchronous Test .........................................................................................7-9
Arming the Digital Modules .................................................................................................7-13
Checking for Data Transfer Completion ..............................................................................7-14
Reading Data from a Synchronous Input Port ....................................................................7-15
Clearing Data from Synchronous Input and Output Ports ...................................................7-16
Synchronous Control and Status Pins ................................................................................7-16
Synchronous and Asynchronous Example .........................................................................7-17
Chapter 8
..............................................................................................................................8-1
Advanced SCPI operations.............................................................................................................8-1
Introduction...................................................................................................................................8-1
Using ROUTE: CONFIGURE to Control Switching Sequence .................................................8-1
Include Lists..............................................................................................................................8-2
Using Exclude Lists ..................................................................................................................8-5
Using External Triggering .........................................................................................................8-7
Selecting the Trigger Source.................................................................................................8-7
Selecting the Trigger Count ..................................................................................................8-9
Selecting a Trigger Delay......................................................................................................8-9
Arming and Disarming the 1256..........................................................................................8-10
Generating a Single Trigger ............................................................................................8-11
Output Trigger Signals from the 1256 .............................................................................8-12
Selecting an Output Trigger Destination..........................................................................8-12
Using Scan Lists and External Trigger Input ..........................................................................8-13
Scan Lists ...............................................................................................................................8-13
Defining a Scan List ............................................................................................................8-16