Searching

Once you have acquired or loaded data, you can automatically scroll the data window to the location of a specific set of signal conditions or transitions by selecting the View–>Search item from the menu bar or by clicking on theĀ  icon on the tool bar (see User Interface for assistance). A Search Setup menu will be provided for selecting the type of search desired.

Search Setup

Choose the search options using the menu illustrated above. Each of the menu items is disscussed in more detail below.

Criteria

The Criteria menu field allows the specification of signal states using either an AND logic (All specified states must occur simultaniously in order to constitute a match) or an OR logic (Any individual specified state consititues a match). For example, if the state of Channel 6 was specified as “Falling Edge”, and that of Channel 7 as “One (High)”, the criteria field would specify whether the search would look for a time when there occured “A falling edge on Channel 6 while Channel 7 was high” or alternately, search for a time where there is “A falling edge on Channel 6″ or a time where “Channel 7 was high”.

Direction

The Direction menu field specifies whether to search forward from the current position, forward from the beginning of the data, backward from the current postion, or backward from the end of the data. Note that, following a search from the front or back of the data, this field is automatically changed to the appropriate “from the current postion” selection to accomodate an easy search for the next occurance of the same condition.

Signal State

The signal state for each channel can be specified by either a static state, or an edge. Note that it is often unwise to seach for simultanious edges, since real signals are often misalligned slightly in time. Note, also, that a search for a static state on data that is already in the given state at the edge of the window, may only scroll the window forward by one page, since the state will probably be found immediately outside the currently viewed window.