Agilent Technologies 4294A, Programming Manual

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Application Sample Programs
Measuring Magnetic Materials
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Programs
Sample Program
Example 13-4 shows a sample program to measure magnetic materials (for HP Instrument
BASIC). You can find the source file of this program, named permeabi.bas, on the sample
program disk.
How to use the program is described below:
Step 1. Connect the 42942A terminal adapter to the 4294A, and start this program. When the
message “Perform the adapter setup? 0:Yes, 1:Skip” is displayed, enter 0 if you want to set
up the adapter.
Step 2. When the message “Connect OPEN (0S) to the 7mm port and press 'Continue'.” is
displayed, connect OPEN to the 42942A and press the
Continue
key (2nd softkey from the
top). The phase data and OPEN data for calculating the setup data will be measured.
Step 3. When the message “Connect SHORT (0-OHM) to the 7mm port and press 'Continue'.” is
displayed, connect SHORT to the 42942A and press the
Continue
key to measure the
SHORT data for calculating the setup data.
Step 4. When the message “Connect LOAD (50-OHM) to the 7mm port and press 'Continue'.” is
displayed, connect LOAD to the 42942A and press the
Continue
key to measure the
LOAD data for calculating the setup data.
Step 5. When the message “Connect the 16454A to the 7mm port and press 'Continue'.” is
displayed, connect the 16454A to the 42942A and press the
Continue
key.
Step 6. When the message “Start frequency [Hz] = ?” is displayed, enter the frequency at the
sweep start point. In the same way, enter the frequency at the sweep end point, the sweep
type, the signal source level, the number of measurement points, and the band width. When
you have completed all entries, they are displayed followed by the message “Measurement
condition is OK? 0:OK, 1:NO”. If you find no mistake, enter 0.
Step 7. When the message “Insert the MUT holder (without MUT) and press 'Continue'.” is
displayed, make sure that only the holder is inserted into the 16454A and press the
Continue
key to measure the SHORT data for fixture compensation.
Step 8. When the message “Outer diameter of MUT [mm] = ?” is displayed, enter the outside
diameter of the MUT. In the same way, enter the inside diameter and the height of the
MUT.
Step 9. When the message “Insert MUT (with holder) into fixture and press 'Continue'.” is
displayed, insert the MUT into the 16454A together with the holder and press the
Continue
key to measure the impedance.
Step 10. When the message “Select softkey to display each parameter.” is displayed, press the
softkey for the parameter you want to display on the screen. Figure 13-5 shows an example
of the screen display when selecting the real part (
) and the imaginary part ( ) of the
complex relative permeability as displayed parameters. At this time, pressing the “Quit”
softkey terminates the program and pressing the “Re-measure” softkey lets you repeat the
procedure from Step 8.
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