Trigger holdoff system for an oscilloscope
First Claim
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1. An oscilloscope, comprising:
- trigger generator means for generating raw trigger signals at a predetermined point on an input signal;
holdoff means coupled to said trigger generator means for receiving said raw trigger pulses and issuing valid trigger signals every predetermined number of raw trigger pulses; and
a triggerable time base system coupled to said holdoff means for receiving said valid trigger signals and being triggered thereby.
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Abstract
A trigger holdoff system for an oscilloscope is provided in which a desired trigger signal is taken out from a repetitive group of raw trigger signals with variable time therebetween. A trigger generator generates raw triggers which clock a divide by N counter programmable by a microprocessor. When the counter reaches its terminal count, a trigger is passed on to sweep or acquisition circuits from the trigger holdoff system and an enable signal is set so that the next raw trigger reloads the counter.
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Citations
3 Claims
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1. An oscilloscope, comprising:
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trigger generator means for generating raw trigger signals at a predetermined point on an input signal; holdoff means coupled to said trigger generator means for receiving said raw trigger pulses and issuing valid trigger signals every predetermined number of raw trigger pulses; and a triggerable time base system coupled to said holdoff means for receiving said valid trigger signals and being triggered thereby. - View Dependent Claims (2, 3)
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Specification