Monitoring the SDI Physical Layer
4.
Use the general-purpose knob to position
voltage cursor V1 at the peak of the
overshoot at the top horizontal part of
the waveform.
5.
Select cursor V2 and use the
general-purpose knob to position
the voltage cursor V2 at the bottom of
the top line of the waveform. Include
any ringing (the oscillation following
overshoot) in the measurement.
Essentially, you are measuring the
thickness of the top line of the waveform.
6.
The cursor Delta readout displays the
amplitude of the aberration.
7.
Perform the same voltage-cursor
measurement on the bottom line
thickness, including any undershoot and
ringing.
NOTE.
Aberrations at the top or bottom line
of the waveform should not exceed 10% of
the signal amplitude. Automatic equalizer
circuits in receivers may be sensitive to
larger aberrations.
To Manually Measure Rise Time Using Variable Gain
1.
Perform the initial setup for Eye
measurements. (See page 92,
To Set
Up for Eye Measurements
.)
2.
Press the
MAG/GAIN
front-panel button.
94
Quick Start User Manual
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