Racal Instruments 1256E Manual page 11

Switching system

Table of Contents

1256E User Manual

General.........................................................................................................................................7-1

Digital Module Ports..................................................................................................................7-1

Asynchronous Digital Operation............................................................................................7-1

Synchronous Digital 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

..............................................................................................................................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

Table of Contents