How to Operate Your Instrument
Timing Menu
The Timing menu enables you to save a timing setting to compare with another signal and specify the zero point of the
timing display.
To save the timing of the current input as an offset to the timing display, use the
Save Offset
soft key. The current timing
becomes the zero point for the saved offset mode of the timing display. This applies to both the cross-hair target in the
middle of the display and the numeric readouts.
NOTE.
You cannot save the timing offset if either the input or reference is missing or unlocked. You also cannot save a
reference when in internal mode. Saving an offset in these conditions would lead to misleading results so it is not allowed
by the instrument.
Save Offset allows you to measure the timing between inputs or to match multiple signals. To select the definition for the
zero timing offset, select one of the following:
Rel. to Rear Panel
which means that the timing offset will be shown as zero when the two signals are timed down at
the rear of the waveform monitor.
Rel. to Saved Offset
which means that the timing will be shown as zero offset when the input signal matches the timing
of the signal that was present when the offset was saved using the Save Offset menu entry.
This selection changes both the numeric readouts and the target in the middle of the timing display.
Timing Displays for Simple Versus Complex Timing
The number of circles, with each representing
a time offset, varies with the complexity
of the timing between the reference and
input signals. If you are timing input signals
with rates that are integer multiples of the
reference rates, the instrument can measure
the timing deterministically and displays the
relationship as one circle (offset) relative
crosshair (reference as is shown).
Such cases include timing an NTSC input
(multiplier of 1) or a 525 SDI input whose
frame time is 33.36 ms (multiplier of 2),
against an NTSC reference, which has a
frame time of 66.73 ms.
Quick Start User Manual
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