Querying Parameter Settings; Scpi Command Terminators; Ieee-488.2 Common Commands - Agilent Technologies U2300A Series Programming Manual

Querying Parameter Settings

You can query the current value of most parameters by adding a question
mark ( ? ) to the command. For example, the following command sets the
scan count to 10 sweeps:
TRIGger:COUNT 10
You can then query the scan count value by sending:
TRIGger:COUNT?
You can also query the minimum or maximum scan count allowed as
follows:
TRIGger:COUNT? MIN
TRIGger:COUNT? MAX

SCPI Command Terminators

A command string sent to the instrument must terminate with a <new
line> (<NL>) character. The IEEE- 488 EOI (End- Or- Identify) message is
interpreted as a <NL> character and can be used to terminate a command
string in place of a <NL> character. A <carriage return> followed by a
<NL> is also accepted. Command string termination will always reset the
current SCPI command path to the root level.

IEEE-488.2 Common Commands

The IEEE- 488.2 standard defines a set of common commands that perform
functions such as reset, self- test, and status operations. Common
commands always begin with an asterisk ( * ), are three characters in
length, and may include one or more parameters. The command keyword
is separated from the first parameter by a blank space. Use a semicolon
( ; ) to separate multiple commands as shown below:
*RST; *CLS; *ESE 32; *OPC?
U2300A Series USB DAQ Programming Guide
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