instrument handle identifies a particular instrument session.

You obtain the instrument handle parameter from niDMM Initialize or niDMM Initialize With Options. The default is None.

error in (no error) describes error conditions that occur before this VI runs. If an error occurred before this VI runs, the VI passes the error in value to error out. This VI runs normally only if no error occurs before this VI runs. If an error occurs while this VI runs, it continues and sets its own error status in error out. Use niDMM Error Message 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 ran or FALSE (checkmark) to indicate a warning or that no error occurred before this VI ran. The default is FALSE.
	code is the error or warning code. The default is 0. If status is TRUE, code is a negative 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 that produced the error or warning. The default is an empty string.

instrument handle out returns a handle that you use to identify the instrument in all subsequent instrument driver VI calls.

Self Test Result contains the value returned from the instrument self test. Zero indicates success.

On the NI 4070/4072, the error code 1013 indicates that you should check the fuse and replace it, if necessary.

Note   Self-test does not check the fuse on the NI 4065 and NI 4071. Hence, even if the fuse is blown on the NI 4065 or NI 4071, self-test does not return error code 1013.

Self Test Message contains the string returned from the instrument self-test. The array must contain at least 256 elements.

For the NI 4050 and NI 4060, the error codes returned for self-test failures include the following:

• NIDMM_ERROR_AC_TEST_FAILURE
• NIDMM_ERROR_DC_TEST_FAILURE
• NIDMM_ERROR_RESISTANCE_TEST_FAILURE

These error codes indicate that the DMM should be repaired.

For the NI 4065 and NI 4070/4071/4072, the error code returned for a self-test failure is NIDMM_ERROR_SELF_TEST_FAILURE. This error code indicates that the DMM should be repaired.

error out contains error information. If error in indicates that an error occurred before this VI ran, error out contains the same error information. Otherwise, it describes the error status that this VI 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. The default is 0. If status is TRUE, code is a negative 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 that produced the error or warning. The default is an empty string.