Measurement-computing Analyzer488 Instrukcja Użytkownika Strona 108

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Section 4 Serial Controller
4.14
If a command is preceded by an asterisk then that command is
unasserted. For example, *REN states that the remote enable line is
unasserted. Conversely, REN without the asterisk states that the line
becomes asserted.
4.11.7 Query Response
Many of the Analyzer488 commands offer a Query (
?
) option. This
option may be used to examine the current state of a given command, or the
parameters specified when the command was last used. The query option
is specified by sending the command keyword followed by a question
mark. For example, the Talk/Listen State of the Analyzer488 when in a
low level controller mode may be returned by sending the
TALK
command
followed by a question mark (
TALK?
). In response, the Analyzer488 will
return the string
TALK
in in the Talk State or
LISTEN
if in the Listen
State. All query responses strings are formatted such that the string may be
sent back to the Analyzer488 as a command. One use for the Query option
is to save the present configuration of the Analyzer488 for later use.
4.11.8 Examples
This section gives programming examples written in the BASIC
language.
4.12 Command Descriptions
The following pages describe in detail all the commands used in the
Serial Controller Mode of operation of the Analyzer488.
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