HP34401A System Controls

Contains system-related commands. These commands are not directly related to taking measurements but are an important part of operating the multimeter.

Beeper specifies if the multimeter will emit a tone when certain front panel conditions are met. Valid range: T: ON (default) or F: OFF.
VISA session is a unique reference to an instrument I/O session. It identifies which device to communicate with and all configuration information to perform the I/O. A VISA session is a unique logical identifier used by VISA to communicate with a resource. The VISA session is maintained by the VISA resource name control and is not seen by the user.
Display Message allows for a 12-character message to be displayed on the multimeter screen. Valid range: T: ON or F: OFF (default).
Message to Display contains up to 12 characters to be displayed on the multimeter screen.
Command issues system commands. Valid range:

0None
1Self Test
2Firmware Revision Query
3SCPI Version
4System Reset
error in describes error conditions that occur before this VI or function runs. The default is no error. If an error occurred before this VI or function runs, the VI or function passes the error in value to error out. This VI or function runs normally only if no error occurs before this VI or function runs. If an error occurs while this VI or function runs, it runs normally and sets its own error status in error out. Use the Simple Error Handler or General Error Handler VIs to display the description of the error code. Use error in and error out to check errors and to specify execution order by wiring error out from one node to error in of the next node.
status is TRUE (X) if an error occurred before this VI or function ran or FALSE (checkmark) to indicate a warning or that no error occurred before this VI or function ran. The default is FALSE.
code is the error or warning code. The default is 0. If status is TRUE, code is a non-zero error code. If status is FALSE, code is 0 or a warning code.
source describes the origin of the error or warning and is, in most cases, the name of the VI or function that produced the error or warning. The default is an empty string.
Display specifies whether the front panel display is ON or OFF. Valid range: T: ON (default) or F: OFF.
dup VISA session is a copy of VISA session. Use dup VISA session programmatically to pass VISA Session to any calling VIs.
Command Response returns results of the specified system command.
error out contains error information. If error in indicates that an error occurred before this VI or function ran, error out contains the same error information. Otherwise, it describes the error status that this VI or function produces. Right-click the error out indicator on the front panel and select Explain Error from the shortcut menu for more information about the error.
status is TRUE (X) if an error occurred or FALSE (checkmark) to indicate a warning or that no error occurred.
code is the error or warning code. If status is TRUE, code is a non-zero error code. If status is FALSE, code is 0 or a warning code.
source describes the origin of the error or warning and is, in most cases, the name of the VI or function that produced the error or warning.