HP34401A Find Meter

Searches for the HP34401A on the interface(s) specified. The factory default interface is GPIB address 22.

Note  You must have VISA version 2.0 or higher installed to use this driver.

Serial Port sets the parameters for the serial interface. These settings must match the actual instrument settings. You cannot change serial parameters remotely.
Baud Rate specifies the baud rate used by the serial interface (RS-232) to communicate with the instrument. These settings must match the actual instrument settings. Serial parameters cannot be changed remotely. The following table includes all valid values.

0300
1600
21200
32400
44800
59600 (default)
Parity and Data Bits sets the parity value and the number of data bits for the serial interface. These settings must match the actual instrument settings. Serial parameters cannot be changed remotely. The following table includes all valid values.

0Parity:None, 8 Bits
1Parity:Even, 7 Bits
2Parity:Odd, 7 Bits
Search Order sets the order the communications buses will be scanned for the presence of the meter.

0No search
1GPIB 22 (Default)
2Serial Ports
3GPIB Bus
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.
Serial Scan scans serial ports. Generally when a device is connected to a serial port both the DCD and DSR lines are asserted. Auto Detect mode checks the state of both lines and scans ports when one or both lines are asserted. Scan All mode scans all ports found in the system. Scan All mode requires considerably more time than Auto Detect mode because all inactive ports must time out.

T Auto Detect
F Scan All
Instr. Descriptor uniquely identifies the instrument to open or initialize. The following table shows the syntax for the Instr. Descriptor. Optional parameters are shown in square brackets ([ ]).

Interface Syntax
GPIB GPIB[bd]::prim addr[::sec addr]
Serial ASRL[port]::INSTR

The following table describes the parameters and default values.

Parameter Description (Default Value)
bd GPIB board (0)
prim addr GPIB primary address (1)
sec addr GPIB secondary address (none)
port serial port number (COM1 = 1, etc.)
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.