16. Status Display
362
• Default Phase Difference Setting
If the input signal is HD or SD and F•1 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 instrument. In addition, depending
on the output accuracy of the signal generator and measurement accuracy of the
instrument, there may be an offset of around 0 ± 4 clocks in the display.
LEGACY: The phase difference is assumed to be zero when an external sync signal
without a 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.
• Graphical Display
The vertical axis represents the V phase difference in lines. The horizontal axis represents
the H phase time difference. 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 approximately +1/2
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
following table for details.
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.
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