8. STATUS DISPLAY
160
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User-Defined References for the Phase Difference
When F•3 REF SELECT is set to EXT, you can set the current phase difference to zero
by pressing F•1 REF SET USER. You can change the reference to match the system
that you are using. (During multi link, the phase difference of link A or link 1 is set to
zero.)
To reset the phase difference to its default value (see below), press F•2 REF SET
DEFAULT.
•
Default Phase Difference Setting
If the input signal is HD or SD and F•3 REF SELECT is set to EXT, you can use F•4 0H
TIMING to select the reference where the phase difference is assumed to be zero.
When using a LEADER signal generator that allows you to select LEGACY or SERIAL,
this setting must be matched to the setting selected on the LV 5490. In addition,
depending on the output accuracy of the signal generator and measurement accuracy of
the LV 5490, there may be an offset of around 0 ± 4 clocks in the display.
LEGACY:
The phase difference is zero when the external sync signal without timing
offset transmitted from a LEADER signal generator and an SDI signal are
received.
SERIAL:
The phase difference is zero when the external sync signal and the SDI
signal are received at the times defined in the signal standard.
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Graphical Display
The vertical axis indicates the V phase difference in lines. The horizontal axis represents
the H phase difference in time. When the circles that represent V and H overlap with
each other in the center, there is no phase difference.
The circles are normally displayed in white, but they will be displayed in green under the
following circumstances.
Horizontal: When the circle is within ±3 clocks of the center.
Vertical: When the circle is within ±0 clocks of the center.
When the signal is behind the reference signal, the circle is displayed on the Delay (+)
side. When the signal is ahead of the reference signal, the circle is displayed on the
Advance (-) side. For both the V and H axes, differences of up to approxi1/2
frames from the center are displayed on the Delay axis and differences of up to
approximately -1/2 frames from the center are displayed on the Advance axis. (See the
table below.)
When the phase difference between an SDI signal and an external sync signal is being
measured, the H axis phase difference may vary within a range of ±1 clock in cases such
as when the signal is switched. When the phase difference between SDI signals is being
measured, the H difference may vary within a range of ±2 clock in cases such as when
the signal is switched.
Summary of Contents for LV 5480
Page 15: ...2 VIDEO SIGNAL WAVEFORM DISPLAY 7 SCALE UNIT HDV SDV SCALE UNIT HD SD SCALE UNIT 150 ...
Page 38: ...2 VIDEO SIGNAL WAVEFORM DISPLAY 30 COLOR MATRIX XYZ COLOR MATRIX GBR COLOR MATRIX RGB ...
Page 98: ...5 PICTURE DISPLAY 90 STATUS INFO ON Figure 5 34 Turning the information on and off ...