102 Keysight E4981A 120 Hz/1 kHz/1 MHz Capacitance Meter
Measurement Applications (Sample Programs)
Recovering the Correction State
9-
Recovering the Correction State
This application program recovers the OPEN/SHORT/LOAD correction state of
E4981A from a text file and then updates the E4981A to the saved correction
state.
The program of Example 9-3 is described in detail below. Each explanation
below is inserted as a comment line in the program. For details on the VISA
functions, refer to the I/O Library Suite manual.
Configuration Define Variables and initialize the program.
Open Instrument Assigns a USB address or GPIB address to the I/O bus.
Setup Start Presets the E4981A. Sets the measurement conditions and
the LCD display.
Setup End Presets the E4981A. Reads the E4981A correction data
such as Frequency, Primary and Secondary parameters
correction values for Open/Short/Load, Standard values for
Open/Short/Load, Cable length and Phase Shift stored in a
text file.
ErrorProc Displays an error number when an error occurs.
ErrorCheck A subroutine to check whether an error occurs when the IO
Library Suite function is executed.
SelectMode A subroutine to change assignment of the I/O bus and
address setting according to the connection type i.e. USB
or GPIB between the E4981A and a PC.
FnComp A function which performs OPEN/SHORT/LOAD correction
and returns 1 on success and 0 on failure.
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