Oscilloscope Reference Trigger graticule
Trigger graticule
All graticule types are available for selection from the drop-down list. The IRE graticule is normally used
with the NTSC signals, and the mV graticule is normally used with all other video signals.
Trigger holdoff
After a trigger event, the instrument will not accept another trigger event until after the holdoff value is
exceeded. Holdoff is usually specified in units of time, but other units may be used.
Trigger Holdoff: Auto
When the Trigger Holdoff is set to Auto, the instrument automatically calculates the trigger holdoff time.
It is normally equal to five times the current Horizontal Scale setting.
After a trigger event, the instrument will not accept another trigger event until after the holdoff value is
exceeded. Holdoff is usually specified in units of time, but other units may be used.
Trigger Holdoff: Random
When Trigger Holdoff is set to Random, the instrument delays the trigger a random amount of time
between triggers. This means that successive acquisitions are unrelated to the previous trigger signal.
Trigger Holdoff: Time
After a trigger event, the instrument will not accept another trigger event until after the holdoff value is
exceeded. Holdoff is u sually specified in units of time, but other units can be used.
When the Trigger Holdoff is set to Time, you can manually adjust the value with the multipurpose knob.
Use this option when the signal that you want to trigger on has several possible trigger points. Use the
T
rigger Holdoff control to delay the trigger system for a specified amount of time between triggers so that
you can obta in a stable display.
DSA/DPO70000D, MSO/DPO/DSA70000C, DPO7000C, and MSO/DPO5000 Series 925
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