Non-interruptive spectrum analyzer for digital modems
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United States of America Patent
Stats
-
Sep 13, 1988
Grant Date -
N/A
app pub date -
Jan 4, 1988
filing date -
Jan 4, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A system and method are provided which allow a user to obtain a plot of the amplitude response of a channel such as a telephone line in the band occupied by a modem signal without interrupting or affecting the data traffic through the modem. No test tones are required for M.sub.e spectral measurements, i.e., the system extracts spectral data from the actual received modem signal that has been shaped by the amplitude characteristics of the line. The amplitude characteristics are displayed on an external oscilloscope using a modem eye pattern display.
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