OmniTek OTR 1001, Руководство пользователя

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OmniTek OTR 1001 User Guide, v3.1 M-6
High Pass Filter
The High Pass Filter option in the Properties control offers a range of filters between 10Hz and
100kHz to be applied to the jitter, together with a Timing option that selects the filter specified
by SMPTE for Timing Jitter measurements on the type of video that is being analysed and
a corresponding
Alignment option that selects the filter specified for Alignment Jitter
measurements.
The High Pass Filter option on the Button Bar cycles through the offered filters.
Vertical Gain
The V Gain option in the Properties control selects between the different scalings that can be
applied to the vertical axis of the display. Selecting the V Gain option on the Button Bar cycles
through the available scalings.
Cursors
The ‘ Show
’ options in the Properties control enable display of voltage and time cursors (and
associated lines such as those marking the 20% and 80% levels), either separately or together.
Selecting the
Cursors option on the Button Bar switches between the selected cursors being
displayed and these cursors being hidden.
Visualisation
The Gain control adjusts the intensity of the displayed waveform (as a percentage of the
received signal level).
The Persistence setting sets the rate at which the displayed data decays. Larger values have the
result of smoothing out time variations.
The Gamma setting applies gamma encoding to the displayed waveform. A setting of 100
corresponds to a gamma value of 1. Values less than 100 emphasise differences in low signal
intensities but reduce the visibility of differences in high signal intensities. Values greater than
100 emphasise differences in high signal intensities but reduce the visibility of differences in low
signal intensities.
The Colour setting in the Properties control selects the colour used for the waveform trace (out
of Cyan , Green , White or ‘ Temperature Ramp
’). The
Colour option in the Button Bar cycles
through the available colours.
Ticking the CRT Emulation option applies a special filter that makes the display emulate how
the data would be displayed on a CRT-based waveform monitor. Selecting the CRT Emulation
option on the Button Bar switches this option between On and Off.
Ticking the Show Graticule option shows the underlying grid for the Jitter Display.
The Jitter Meter option selects between the different options available in showing a Jitter meter
at the top of the display.
Sweep
The Sweep option in the Properties control selects between single-line, two-line, field and frame
sweeps in the display. The Sweep option on the Button Bar cycles through the available sweep
settings.