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Specifications
AM700 Audio Measurement Set Service Manual
1–31
Table 1–21: Generator signals (cont.)
Capabilities Description
Generated signals
Multitone A multitone test signal with variable amplitude. This signal consists of
multiple simultaneously generated sine waves. The multitone may be
specified in either of two ways: file mode or list mode.
File Mode: A user-provided file contains the description (frequency and
amplitude) of each tone included in the multitone signal and the buffer size
to use for the fft-based generation of the multitone. Up to 128 tones may be
generated, in buffer sizes from 512 to 8192 bytes.
List Mode: The multitone is generated using the same frequencies and
amplitudes as used when making sweeps in list mode. The built-in list
editor may be used to enter this information. The buffer size is fixed at
1024.
Jittered Sine This is a jittered sine wave with user-controlled jitter frequency and
amplitude.
Table 1–22: Audio analyzer application
Capabilities Description
Human interface
The analyzer has a touch and zoom interface.
Number of Display Screens 1
Number of Measurements per Screen Up to 4 measurements at once
Analysis modes
Major Modes of Operation
Open Loop Acquisitions are controlled by the received signal. Measurements (except
for the real-time readouts) are subject to settling criteria, and no special
knowledge of the generated signal may be assumed by the analyzer.
Closed Loop The local generator is coupled to the analyzer. This can be signalled by the
user to enable the analyzer to optimize its behavior (only plotting points
during generator sweeps, for example).
Minor Modes of Operation
Regulation Mode The analyzer controls the generator amplitude or frequency to get a desired
reading. When the reading is obtained a measurement is triggered. This
may be used to produce amplitude versus frequency plots at a constant
distortion level, for example.
Relative to Reference All measurements may be made relative to a previous measurement. This
reference measurement may be recalled from a file or loaded with GPIB.