Specifications

192 Chapter 15

Sample Application Programs

Measuring Array (Multi-Element) Components

When measuring an array component with the scanner, you must select appropriate

calibration coefficients for each channel, switched by the scanner, to make a correct

measurement (by eliminating errors that depend on measurement paths).

The 4287A can handle up to 8 tables for different measurement conditions (including

calibration coefficients). This capability is used to set calibration coefficients for each

channel. Specifically, calibration coefficients for all of the channels are first obtained in

advance based on tables configured for the same measurement condition. Then, while

performing measurement for each channel, the corresponding table is used. In this way,

you can perform measurements under the same measurement condition but with different

calibration coefficients.

The following describes how to use the 4287A to measure array components.

Step 1. Configuring the setup tables

Configure the measurement point setup tables and the calibration kit setup tables for all

required channels. If you use the bin sorting function (comparator), also configure the bin

sorting setup tables.

Step 2. Obtaining calibration coefficients

Change the channel and active table together and measure the OPEN/SHORT/LOAD data

to calculate the calibration coefficients for each channel.

Figure 15-1 Timing Chart of Array Component Measurement (using 2 channels)