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Chapter 4, GPIB Commands
The Syntax of Program Messages
The Syntax of Program Messages
This section details the format and parameters of program messages.
Program messages are sent by the computer to the measuring device. They are
comprise one or more commands, the symbols that separate each command, and a
message termination symbol (terminator).
Uppercase and Lowercase Letters
No distinction is made between uppercase and lowercase letters in program
messages.
Program Message Terminator
The
program message terminators
are
<newline>
,
<^END>
, and
<newline><^END>
.
<^END>
is used to indicate the end of a program message.
<^END>
means that an EOI (End Of Identify) was transmitted, signaling that data
transmission through an GPIB interface has been completed.
For example, the
HP BASIC
OUTPUT
statement automatically adds an
<^END>
to the end of data transmissions. For IBM PC computers, the specification for the
terminator that is transmitted can be changed by changing the environment
settings of the system.
Multi-messages
More than one command can be included in a message. When this is done a
semicolon is used to separate the commands.
*RST;*IDN?
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Страница 14: ...Contents 14 Error Message 154 Glossary 161...
Страница 30: ...30 Chapter 1 General Information Other Information...
Страница 123: ...123 5 S pecifications Specifications...
Страница 137: ...137 A F requency Conversion Tables Appendix A Frequency Conversion Tables...
Страница 140: ...140 Appendix A Frequency Conversion Tables Frequency Conversion for Signal Generation...
Страница 141: ...141 B M anual Changes Appendix B Manual Changes...
Страница 164: ...Index 164 TX definition 162 TX subsystem 114 TX RX port 25 typical 124 U upconverter definition 162 W warm up time 124...