Agilent Technologies 4294A Service Manual download pdf (Page 82)

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82 Chapter 6

Reading/Writing Measurement Data

Internal Data Processing

Data trace array

The data trace array contains data that appears on the screen as data trace, that is, the result

of measurement parameter conversion and arithmetic performed on the data array. Each

result is stored as a complex number, regardless of whether the data is a scalar or vector.

Therefore, if the data is a scalar, “0” is stored in the imaginary number part. Use the

following commands to read or write the data trace array.

• “OUTPDTRC?” on page 378

• “OUTPDTRCP?” on page 379

• “INPUDTRC” on page 322

Memory trace array

The memory trace array contains data that appears on the screen as memory trace, that is,

the result of parameter conversion performed on the memory array. Use the following

commands to read the memory trace array. Note that you cannot write any part of the

memory trace array.

• “OUTPMTRC?” on page 388

• “OUTPMTRCP?” on page 389

Calibration data array

The calibration data array contains open, short and load measurement data used for

calculation of the user calibration coefficient. These data are stored as complex numbers.

Three different types of arrays are available to choose from depending on the type of

measurement data (open, short, or load data).

Use the following commands to read or write the calibration data array.

• “OUTPCALC{1-3}?” on page 373

• “INPUCALC{1-3}” on page 320

The calibration coefficient is calculated and stored in volatile memory (RAM) when all

arrays are written.

Array

Number

Stored Data

1 Open measurement data (G-B) for user calibration coefficient calculation

2 Short measurement data (R-X) for user calibration coefficient calculation

3 Load measurement data (R-X) for user calibration coefficient calculation

*1.This number corresponds to the number provided at the end of the command.

1 2 ... 77 78 79 80 81 82 83 84 85 86 87 ... 517 518

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Agilent Technologies 4294A Service Manual Page 82

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