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TRL/LRM Calibration

Overview

The TRL/LRM Calibration VBA Macro lets you perform the 2-, 3-, and 4-port TRL (Through-Reflect-Line),

LRL (Line-Reflect-Line), TRM (Through-Reflect-Match), and LRM (Line-Reflect-Match) calibrations for the

E5070B/E5071B ENA RF network analyzers. These calibration techniques are generally used in non-coaxial

environments such as in-fixture measurements and on-wafer measurements.

TRL calibration is performed by using the zero-length through, reflection (short, or open), and line standards.

When the non-zero-length through is used instead of the zero-length through standard, the calibration is called

LRL. TRM calibration is performed by using the zero-length through, reflection (short, or open), and match

(load) standards. When the non-zero-length through is used instead of the zero-length through standard, the

calibration is called LRM.

TRM and LRM calibrations are suitable for measurements at relatively low frequencies where the line

standards of the TRL and LRL calibrations can become physically too long for practical use. The TRL/LRM

Calibration VBA Macro allows you to perform calibration over a broad frequency range with a combination

of TRM (or LRM) and TRL (or LRL) calibrations while using up to three line standards.

Table 1. Key features (comparison with old version)

Function TRL Cal.

VBA Macro (old version)

TRL/LRM Cal.

VBA Macro

TRL and LRL calibrations

TRM and LRM calibrations

Multiport calibrations

Number of line standards

Setting negative delay values for cal. stds

Averaging for calibration measurements

Yes

Up to 2

Yes

Up to 3

Yes

NOTE

We recommend that you use the E5070B/E5071B firmware revision 3.5 and above.

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Agilent Technologies ENA Series Betriebsanweisung Seite 3