Agilent Technologies ENA Series Betriebsanweisung PDF herunterladen (Seite 12)

5. Defining calibration kit

Define the values of the calibration standards in the same manner as 2-port TRL/LRM calibration.

6. Performing calibration measurement

6-1) Press each of the Thru, Reflection, and activated Match/Lines keys in the main control panel, and then

press each calibration measurement key that appears in the User Menu area to perform the calibration

measurements.

NOTE:

In multiport TRL/LRM calibration, the through and line calibration measurements are not performed at all of

the paths among test ports. The following table shows the measured paths of the through and line calibration

measurements. The through and line calibration data of non-measured paths is mathematically derived from

the through and line calibration data of the measured paths.

Table 2. Measurement paths for Thru and Line calibrations

Calibration type Measurement ports of

Reflection and Match cal.

Measurement paths of

Thru and Line cal.

3-port TRL/LRM cal. for Ports:1-2-3 All ports (1, 2, and 3)

1-2 and 1-3

3-port TRL/LRM cal. for Ports:1-2-4 All ports (1, 2, and 4)

1-2 and 1-4

3-port TRL/LRM cal. for Ports:1-3-4 All ports (1, 3, and 4)

1-3 and 3-4

3-port TRL/LRM cal. for Ports:2-3-4 All ports (2, 3, and 4)

2-3 and 3-4

4-port TRL/LRM cal. All ports (1, 2, 3, and 4)

1-2, 1-3, and 3-4

For example, if you perform 3-port calibration for test ports 1, 2, and 3 by using the Match, Line1 and Line2

standards, perform the calibration measurements as follows:

Through measurement (Figure 8):

- Press Thru.

- Make the through condition for test ports 1 and 2, and press [ ]Thru 1-2. The through measurement

is performed, and an asterisk is indicated.

- Make the through condition for test ports 1 and 3, and press [ ]Thru 1-3. The through measurement

is performed and an asterisk is indicated.

Figure 8. Through calibration menu for 3-port TRL/LRM

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Agilent Technologies ENA Series Betriebsanweisung Seite 12