Anritsu MA24106A Guia do Utilizador descarregar pdf (Página 51)

Using PowerXpert

™

3-7 General Settings

PowerXpert UG PN: 10585-00020 Rev. C 3-19

Averages

The Averages setting allows you to specify the number of measurements that are averaged to calculate the

displayed power. A setting of 1 disables averaging. This setting is only available when “Auto Average” is Off.

Offset

A fixed value (in dB) specified by the user is applied as a power offset to the sensor. A positive offset adds a

value to the power readings and can be used to compensate for attenuators, couplers, limiters, and other lossy

devices. A negative value subtracts a value from the power reading and can be used to compensate for

amplification in the measurement path.

Range

Range allows the operating power range of the sensor to be set to the desired range. Setting to “Auto” means

that sensor firmware determines the appropriate range for it to operate. Setting to Range 1 covers the power

range from +20 dBm to –7 dBm. Setting to Range 2 covers the power range from –7 dBm to –40 dBm.

For model MA24105A, setting to Range 1 covers the power range from +3 dBm to +38 dBm. Setting to Range 2

covers the power range from +38 dBm to +51.76 dBm (150 W).

In some instances, setting the range manually improves the measurement. For example, a low duty cycle, high

crest factor signal, where average power may fall in one range and the peak power in another, may result in

erroneous readings when the sensor is set to auto range. In this case, setting the range manually closer to the

anticipated average power will increase the accuracy.

Apply Above Settings Button

The Apply above settings button applies all changes made to the “Continuous Mode” settings. Changes to

these settings do not take affect until clicking this button.

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Anritsu MA24106A Guia do Utilizador Página 51