OmniTek OTR 1001, User Manual

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OmniTek OTR 1001 User Guide, v3.1a E-7
Mode of Operation
The Colour Mode control selects between YRGB, YCbCr, Bowtie, Composite etc. waveforms,
while the following tick selections control the components that are actually displayed. The
Button Bar option cycles through the available settings.
The Line Mode control selects between displaying the waveform of a single line (picked out by the
crosshair cursor) or multiple lines. The Button Bar option switches between these two settings. When
Labels are shown (see
Show Labels below), the Line Mode that is currently selected is shown in the
top right-hand corner of the display as either Line (single line) or Multi (multiline). Where Single
line is selected, the line being analysed is shown in the bottom left-hand corner of the display. (For
details of the lines selected, see Section E.2 ‘Focus of Analysis’.)
The Sweep control selects between displaying traces from a single sweep and traces separated
by one line, one field or one frame. The Button Bar option cycles through the available settings.
The Filter control selects how the incoming data is sampled. The choice offered is between a
Flat filter, a Low Pass filter or No Interpolation . The Button Bar option cycles round these
three options. When Labels are shown (see Show Labels below), the type of filtering that is
being applied is shown in the bottom right-hand corner of the display.
Interpolation is usually enabled but users should be aware that it can occasionally produce out of
range results. Where these occur, you may prefer to turn the interpolator off.
The TRS Passthrough tick selection enables the inclusion of the TRS in the display.
Cursors
The OTR offers cursor-pairs through which time differences and amplitude differences may be
determined, together with optional user-defined time and amplitude cursors (see ‘Shared
Waveform Markers’ below).
The Time , Amplitude and Shared markers options provide individual control over the display
of the different sets of cursors while Show Cursors provides overall control over the display of
the cursors over the waveform display. Show Cursors is also turned On and Off by the Cursors
option on the Button Bar.
The individual cursors of the Time and Amplitude cursor pairs may be moved using the HORIZ
and VERT knobs. The cursor moved is the one currently shown in yellow. Pushing the knob
switches over control to the other cursor. The Shared markers may be positioned either by setting
values in the Shared Waveform Marker section of the View window Properties control or by
Ctrl-clicking and dragging with a mouse.
The X1, X2, Y1 and Y2 selections in this part of the Properties display control the two pairs of
cursors, one pair providing difference measurements in the horizontal ( time ) direction and the
other pair providing measurement in the vertical ( amplitude ) direction.
Display Mode
The Display Mode control allows a choice between Overlay ; Parade ; and Stacked presentation
of the component waveforms. The Button Bar option cycles through these arrangements.
Dither Mode
This option offers a choice of Dither mode between 8bit, 10bit and 12bit (where supported).
Visualisation
The Gain control sets 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.