Agilent Technologies ENA Series Betriebsanweisung PDF herunterladen (Seite 11)

Multiport TRL/LRM Calibration Operating Procedure

You can make 3- and 4-port TRL/LRM calibration in the same manner as 2-port TRL/LRM calibration.

1. Setting stimulus conditions

Select the ENA’s active channel to the one for which you want to perform calibration and set the stimulus

conditions of the channel by manual operation. Typical setup items includes:

- Start and stop frequencies

- Sweep type

- Number of points

- Source power level

- IF Bandwidth

- Averaging factor and Averaging ON/OFF

For information on the setting procedure, refer to Chapter 3 “Setting Measurement Conditions” in the

E5070B/E5071B User's Guide.

2. Starting VBA macro

Load and run the TRL/LRM Calibration VBA Macro.

Press [Macro Setup], Load&Run, and select TRL_LRM_cal.

(Alternatively, you can press

[Macro Setup]

Load Project

, load “TRL_LRM_cal.vba” at D:/VBA, and

press [Macro Run].)

3. Turning off system correction

When the message shown in Figure 1 appears, press OK to turn off the system error correction.

NOTES

- This message does not appear when the system error correction has already been turned off.

- System error correction of all channels is turned off.

- System error correction can be turned on by [Preset].

4. Selecting ports

In the Ports menu, select the test ports for which you want to perform the calibration. For example:

- To perform 3-port TRL/LRM calibration for test ports 1, 2, and 3, select Ports:1-2-3.

- To perform 4-port TRL/LRM calibration, select Ports:1-2-3-4.

Figure 7. Selecting Ports:1-2-3 for 3-port TRL/LRM calibration

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Agilent Technologies ENA Series Betriebsanweisung Seite 11