Agilent Technologies ENA Series Guía de usuario descargar pdf (Pagina 409)

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Chapter 12 403

Optimizing Measurements

Setting Port Extensions and Loss Values

12. Optimizing Measurements

Setting Port Extensions and Loss Values

Setting port extensions

Port Extension is a function for moving the calibration reference plane by specifying the

electrical delay. This function is useful, for example, when you cannot directly perform

calibration at the DUT terminal because the DUT is inside the test fixture. In such a case,

this function enables you to first perform calibration at the test fixture terminal and then

move the calibration plane to the DUT terminal by extending the port.

Port extension corrects the electrical delay of each test port (phase shift) only. It cannot

remove errors caused by the loss in and incorrect matching of cables, adapters, or test

fixtures.

NOTE You can define port extension channel by channel. Setting port extension for one particular

channel does not affect other channels.

Operational procedure

Step 1. Press or to activate the channel for which you want to set port

extension.

Step 2. Press .

Step 3. Press

Port Extensions.

Step 4. Set port extension for each test port.

Softkey Function

Extension Port 1 Sets port extension (in seconds) for test port 1.

Extension Port 2 Sets port extension (in seconds) for test port 2.

Extension Port 3

*1.Only with Options 313, 314, 413, and 414.

Sets port extension (in seconds) for test port 3.

Extension Port 4

*2.Only with Options 413 and 414.

Sets port extension (in seconds) for test port 4.

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