Claims
- 1. An oscilloscope comprising:
- a trigger circuit connected to detect a trigger event in the input signal for initiating display of a waveform of an input signal in response to the trigger event, the trigger event being the occurrence of a predefined behavior of the input signal,
- display means for displaying the waveform in response to the initiation of the trigger circuit,
- at least one detection circuit independent of the trigger circuit and responsive to the input signal for detecting occurrence of an anomalous event in the input signal during a blind interval of a measurement cycle of the oscilloscope, the blind interval being an interval during which the oscilloscope is unable to process the input signal to produce a waveform display, and
- means for responding to the occurrence of the anomalous event by either recording the occurrence of the anomalous event or communicating the occurrence of the anomalous event to an operator.
- 2. An oscilloscope according to claim 1, wherein said oscilloscope comprises control means for operating the oscilloscope in accordance with a measurement cycle comprising sequentially an active interval and the blind interval, wherein the active interval plus the blind interval form a detection interval during which the detection circuit is responsive to the input signal.
- 3. An oscilloscope according to claim 1, wherein the means for responding to the occurrence of the anomalous event comprises means for providing a display indicating that the anomalous event has been detected.
- 4. An oscilloscope according to claim 1, wherein the trigger circuit includes a trigger latch that is connected to respond to detection of an anomalous event by said detection circuit.
- 5. An oscilloscope according to claim 1, further comprising a peak detector means responsive to the input signal for detecting peaks thereof.
- 6. An oscilloscope according to claim 1, comprising a plurality of detection circuits for detecting at least two anomalous events selected from the group consisting of glitches, runt pulses, rise times longer than a selected value, and fall times longer than a selected value.
- 7. An oscilloscope according to claim 6, wherein the trigger circuit includes a trigger latch and means for connecting the trigger latch to respond to detection of an anomalous event by any of the detection circuits.
- 8. An oscilloscope according to claim 1, wherein the detection circuit is responsive to an anomalous event that is different from the trigger event.
Parent Case Info
This is a continuation of application Ser. No. 08/088,969 filed Jul. 7, 1993 which is now abandoned.
US Referenced Citations (11)
Continuations (1)
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Number |
Date |
Country |
Parent |
88969 |
Jul 1993 |
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