Agilent Technologies 8510C Operating And Programming Manual page 327

Programming Examples
Example 5: Single- and Dual-Channel Displays
Network analyzer display modes (single-channel, dual-channel and four-parameter) are
demonstrated in split and overlay display formats. Also, marker list functions 1 marker/ and 5
markers are shown with a four-parameter display.
Example 6: Trace Data Output/Input
In this example, the network analyzer measures a single sweep, then outputs a 201 point
Corrected Data array using FORM 3. After this, the array of real and imaginary pairs is
written back to the network analyzer. Before writing the data, the network analyzer is put in
hold mode (this prevents the network analyzer from acquiring new data and overwriting the
data being written by the program). The current data is rst zeroed (by resetting the number
of points while in hold mode). This forces the data array to be reallocated and be initially
loaded with zeros ( 857 dB); then the data is written.
Example 7: FORM1 Data Conversion
After taking a single sweep, the network analyzer outputs the current data array using
FORM1 output format. This is the fastest form for data transfer. The FORM1 data is
then converted to real/imaginary pairs, which are then converted to linear magnitude, log
magnitude and phase data.
Example 8: S11 1-Port and S21 Response Cals
This set of examples guides you through an S11 1-port calibration and an S21 response
calibration. Next, you measure a device using the S11 cal on channel 1 and the S21 cal on
channel 2, in dual-channel display mode.
Example 8a reads the S21 response cal coecient, processes the data, and writes it back into
another cal set register. Then the S11 1-port cal coecients for directivity, source match, and
re ection tracking are read and displayed on the 8510C display.
Example 8b creates several frequency subset calibrations of the S11 1-port cal and saves them
in other cal set registers.
As shown in the program listing, the measurement calibration sequence is performed under
program control using the same procedure as described for the manual operation in the
chapter on measurement calibration:
1. Select the calibration kit using CAL1 or CAL2.
2. Select the type of calibration to be performed.
3. Select the class of standard to be measured.
4. Measure the standards required for the class.
5. When all necessary standards in all necessary standard classes are measured, save the cal
set and turn correction ON.
Selecting the Calibration Type
Use one of these mnemonics to select the calibration type:
13-22 GPIB Programming
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