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S:\Hp8960\E1962B CDMA 2000\Pi Release\Reference Guide\Chapters\cdma2000_meas_aaudio_lev_desc.fm

Audio Level Measurement Description

How is an Audio Level measurement made?

Audio Level measures the AC voltage of the signal applied to the front-panel AUDIO IN connectors, and is one

of the Audio Analyzer measurements. Audio Level can be measured for signals in the frequency range of

100 Hz to 20 kHz, at levels from 1 mV

peak

to 20V

peak

. The measurement is made after any filtering is applied,

and can be made using an rms or peak detector. The type of detector being used for the measurement is

displayed next to the measurement value.

When measuring very low voltages, it may be helpful to use the Audio Analyzer’s adjustable bandpass filter

and the rms detector to reduce noise components.

For information on using the Audio Analyzer, see “Audio Analyzer Measurement Description” on page 38.

This measurement is not affected by the Amplitude Offset setting.

Considerations When Making Manual Audio Level Measurements

When manually controlling the test set from the front panel, all measurements default to using continuous

triggering. If you make digital measurements on a DTC using RF Rise or Protocol triggering, and then hand

off to an AVC and select an analog measurement, the analog measurement may not trigger and display a

result. This is because the digital measurement is still waiting for a burst transmission to trigger it (which it

won’t get from an analog signal) and therefore the measurements “freeze”. To prevent this from happening

when making analog measurements, either turn off the digital measurements or set their trigger source to

Immediate.

Agilent Technologies 8960 Series Reference Guide

Other manuals for Agilent Technologies 8960 Series