| 摘要 |
An automatic save and recall system and method for use in signal measurement systems that acquire and store signal data in accordance with a trigger specification, including generally a trigger definition and trigger control parameters ("trigger controls"). The present invention automatically stores in memory ("saves") trigger-related data that includes, for example, a current trigger definition and other specified portions of a trigger specification ("saved trigger specifications") without an explicit operator request. A plurality of such saved trigger specifications are subsequently available for retrieval from memory ("recall"). This enables an operator to easily return to a previous version of a trigger definition should the operator determine that a current trigger definition is undesirable. The automatic storing of trigger specifications (or portions thereof) may occur in response to one or more predetermined event(s). In one aspect of the invention, such predetermined event(s) include the operator's attempt to acquire data. Significantly, this aspect of the present invention anticipates the operator's needs to save a trigger definition since trigger definitions that are utilized to acquire data are potentially important to the operator. That is, this aspect of the present invention takes advantage of the inherent correlation between a trigger definition that is invoked and the importance of such a trigger definition in the development of a desired trigger specification.
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