Basic Capacitor Measurement - Agilent Technologies 4288A Programming Manual

Measurement Applications (Sample Programs)

Basic Capacitor Measurement

Basic Capacitor Measurement
Example 9-1 shows a sample program to measure a capacitor using the test fixture. This
program is stored on the sample program disk under the filename "meas_fxt.bas".
This program performs measurement in the same way as the procedure given in Chapter 4
of the Operation Manual, in the section called "Learning Basic Measurement Procedure."
When you start this program, the message "Connect Test Fixture, then Push [Enter] key" is
displayed. Connect the test fixture suitable for the shape of the capacitor you want to
measure to the Agilent 4288A and press the
"Set Open-Connection" is displayed. Bring the test fixture to the state for OPEN
measurement and press the
data is measured. Then, "Set Short-Connection" is displayed. Measure the SHORT
compensation data in the same way.
NOTE For how to use the test fixture (for example, the states for the OPEN/SHORT
measurement), refer to the operation manual of the test fixture.
When measurement of the compensation data is finished, "Set DUT, then Push [Enter]
key" is displayed. Attach a capacitor to the test fixture and then press the
measurement is performed and the result is displayed.
After the result is displayed, "Once more? [Y]es/[N]o" is displayed. If you want to make
the measurement again or measure another DUT, press the
order. If you want to finish measurement, press any key other than the
key in this order.
The program is detailed below.
Line 60
Lines 80 to 120
Lines 140 to 150
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Lines 190 to 230
Lines 250 to 280
Lines 300 to 310
Lines 340 to 350
Lines 360 to 370
102
[Enter]
[y] key and [Enter]
Sets the GPIB address.
Assigns the setups of the primary parameter (Cp), secondary
parameter (Q), measurement signal frequency (1 MHz), measurement
signal level (0.5 V), and cable length (0 m) to the Pri$, Sec$, Freq, Lvl,
and Cbl variables, respectively.
Prompts the user to connect the test fixture and waits for the user to
press the key after the connection.
[Enter]
Resets the instrument.
Sets the primary parameter, secondary parameter, measurement signal
frequency, measurement signal level, and cable length to Pri$, Sec$,
Freq, Lvl, and Cbl.
Uses the FNCompen sub-program to measure OPEN/SHORT
compensation data. For the FNCompen sub-program, refer to the
description in Example 4-1 on page 40.
Sets the trigger mode to the GPIB trigger and turns ON the trigger
system successive startup.
Prompts the user to connect the DUT and waits for the user to press the
key after the connection.
[Enter]
Triggers the instrument and reads out the measured result.
key.
key in this order. The OPEN compensation
[y] key and [Enter]
[y]
[Enter] key. The
key in this
key and [Enter]
Chapter 9