Display Wavefor
morTraceData
The trace options are:
1. The Amplitude v
ersus Time trace: The
instantaneous amplitude of the input,
after band-pass filtering, to the current
frequency ran
ge, as defined by the
center frequency and span settings.
2. The Frequency versus Time trace: The
instantaneous frequency of the input,
relative to t
he center frequency. The
vertical axis displays frequency, relative
to the center frequency.
3. The Phase versus Time trace: The
instantane
ous phase of the input, relative
to the center frequency. The vertical axis
is phase, with wrapping at roughly +/-
180°.
All of these traces are derived from the
time-domain IQ data acquired for the RF
channel. T
hey are time correlated with other
analog and digital channels and represent a
continuous time domain data stream.
The frequency versus time waveform handle
(baseli
ne indicator) indicates the center
frequency. When the trace is above the
waveform handle, it is above the center
frequen
cy. When the trace is below the
waveform handle, it is below the center
frequency.
114 MDO4000 Series Oscilloscopes User Manual
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