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4-1
Chapter 4
Using the Computer Interface
Title Page
Introduction ....................................................................................................... 4-3
Front Panel and Computer Interface Operations........................................... 4-3
Types of Computer Interface ........................................................................ 4-3
Using the RS-232 Computer Interface .............................................................. 4-3
Setting Communication Parameters (RS-232).............................................. 4-4
Autoprint and Memory Storage (RS-232)..................................................... 4-5
Autoprint: Computer Interface Control .................................................... 4-5
Autoprint: Output Format......................................................................... 4-5
Memory Storage: Computer Interface Control......................................... 4-6
Memory Retrieval..................................................................................... 4-6
Memory Full Operation ............................................................................ 4-7
Clearing Memory...................................................................................... 4-7
Cabling the Instrument to a Host or Printer (RS-232) .................................. 4-7
Installation Test............................................................................................. 4-8
RS-232 Information....................................................................................... 4-8
Character Echoing .................................................................................... 4-8
Character Deletion.................................................................................... 4-8
Device Clear Using Ctrl C........................................................................ 4-8
RS-232 Prompts........................................................................................ 4-9
Sample Program Using the RS-232 Computer Interface .............................. 4-9
Using the IEEE-488 Interface............................................................................ 4-9
IEEE-488 Operating Limitations .................................................................. 4-9
Installing the IEEE-488 Interface.................................................................. 4-9
Enabling the IEEE-488 Interface .................................................................. 4-12
Installation Test............................................................................................. 4-13
General Information (RS-232 and IEEE-488)................................................... 4-13
How the Instrument Processes Input............................................................. 4-13
Input Strings.............................................................................................. 4-14
Input Terminators ..................................................................................... 4-14
Typical Input Strings ................................................................................ 4-14
Sending Numeric Values to the Instrument (RS-232 and IEEE-488) ...... 4-16
Sending Input Strings to the Instrument ................................................... 4-16
How the Instrument Processes Output.......................................................... 4-16
Service Requests (IEEE-488 only) and Status Registers.............................. 4-17
Event Status and Event Status Enable Registers ...................................... 4-19