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5.1.4 Punctuation
•
A curly brackets "{ }" indicates a variable parameters to be defined.
•
A vertical bar "|" dictates a choice of one element from a list. For example: <A>|<B> indicates
that either A or B can be selected, but not both.
•
Square brackets "[ ]" indicates that the enclosed items are optional.
•
Angle brackets "< >" indicates a variable value to be defined.
•
A question mark "?" after a command indicates that this command is a query. The instrument
should return a data to the controller
5.1.5Separator
•
A colon ":" separates keywords of different hiberarchy.
•
A space separates a keyword and a parameter, as well as a parameter and a unit.
5.1.6 Default unit of parameters
The analyzer has the following default units for numeric variables.
Parameter
Frequency
Amplitude
Time
5.2 Common Commands
IEEE 488.2 common commands is mainly used to operate or query the status register.
5.2.1 Clear Status
Command format:
*CLS
Function description:
This command clears the error queue of the analyzer.
5.2.2 Identification Query
Command format:
*IDN?
Function description:
This command returns an instrument identification information string. The response is organized
into four fields by commas. The field definitions are as follows:
•
Manufacturer
•
Model
•
Serial number
•
Firmware version
Default unit
Hz
dBm
uS
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