Agilent Technologies 4294A Service Manual download pdf (Page 194)

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101

194 13

Application Sample Programs

Measuring Dielectric Material

Figure 13-3 Example of the Result of Executing the Program of Example 13-2

The program is described in detail below:

Line 90 Sets the GPIB address.

Lines 100 to 110 Assigns the upper half of the LCD screen to measurement result

display and the lower half to the HP Instrument BASIC, and

terminates the sweep.

Line 130 Stores the permittivity of vacuum into the E0 variable.

Lines 140 to 180 Stores the conditions to adjust the electrodes into variables.

Lines 190 to 210 Stores the measurement conditions to evaluate the capacitance of the

LOAD standard into variables.

Lines 220 to 290 Stores the limit range of the air capacitor, used as the LOAD standard,

into variables.

Lines 300 to 340 Stores the OPEN standard values (resistance value: 100 GΩ,

inductance value: 0 H), the SHORT standard values (resistance value:

0 Ω, inductance value: 0 H), and the LOAD standard values

(conductance value: 0 S) into the Open_r, Open_l, Short_r, Short_l,

and Load_g variables, respectively.

Lines 350 to 370 Stores the band width setting and the diameters of electrodes A and B

into variables.

Lines 400 to 490 Displays the message at the start of the program.

Line 520 Passes control to a subroutine named Select_elec to select the

electrodes to be used.

Line 530 Passes control to a subroutine named Adapter_setup to set up the

adapter.

Line 540 Passes control to a subroutine named Adjust to adjust the electrodes to

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Agilent Technologies 4294A Service Manual Page 194

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