Debugging Your Code
The commands and functions described in this section allow you to:
- Log information about commands that are sent to a device to the console.
- Try out SCPI commands before they are sent to a device.
The VISADebug
Global Property
Values: On
or Off
Default: Off
**Behavior:**Logs information about commands that you are sending to a device to the console. Switch on this property for debugging purposes, and to understand the way that commands are interpreted.
Example:
set the VISADebug to On // Logs device commands to a console.
MakeSCPICommand
, MakeSCPIQuery
Functions
Behavior: Generates a SCPI command string without sending it to the device. This is useful for testing how different combinations of user-friendly command strings and parameters are sent for the setValue
or query
functions, respectively. These functions use the current device settings, from the VisaDevice
properties:
DefaultChannel
DefaultIdentifier
AllowOverlappedCommand
.
Parameters: Supported SCPI parameters.
Syntax:
makeSCPICommand( commandText {,value} )
makeSCPIQuery( queryText {,value} )
Returns: Binary data for the specific SCPI command.
Example:
put powerAnalyzer.makeSCPICommand("voltage on channel 2", 500 millivolts)
—> VOLTAGE 0.5, (@2);*OPC?
put powerAnalyzer.makeSCPIQuery("measure voltage for M1.DataOut1 allow overlap")
—> MEASURE:VOLTAGE? 'M1.DataOut1'
If you store or log the raw SCPI command string that is generated by these functions, you can also send it to the device using the ExecuteSCPI
command.