18 U8903A User’s Guide
2 Operation and Features
Test Capabilities
The U8903A is capable of testing a broad range of
audio- related devices and components for research and
development, manufacturing, and quality assurance
applications. Examples of the products that can be tested
are listed below.
• Multichannel home theater systems
• Audio amplifiers, as a complete product or at the
component level
• Portable audio playback devices such as MP3 players
• Speakers (require third party accessories such as
microphones and power amplifiers)
• PC audio cards
• Audio components
The U8903A performs the following two basic functions.
• Audio signal generation
• Audio signal analysis
The U8903A basic configuration has two channels of
generator functions and two channels of analyzer functions
which enables the U8903A to test devices with stereo
capability.
The U8903A audio generator has a frequency range of 5 Hz
to 80 kHz. Its sine waveform amplitude range is from
0 Vrms to 8 Vrms (11.3 Vp) for the Unbalanced or Common
mode test output configuration, and 0 Vrms to 16 Vrms
(22.6 Vp) for the Balanced output configuration.
The audio generator features are listed as follows.
• Balanced output signals (XLR)
• Unbalanced output signals (BNC)
• Common mode test output signals (XLR)
• Selectable output impedance
• Sine waveform
• Square waveform
• Variable phase waveform
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