Digital Input (Event Timer)

Operator Menu Location: Generic Hardware Operators Digital Inputs
Operator Bitmap:

Functional Description:
The Event Digital Input generic hardware operator provides access to a pair of high-speed digital input channel resources in the physical hardware capable of measuring the time delay between digital events. When the generic operator is linked to a specific hardware resource, its output value will correspond to the time duration between successive digital pulses between the two channels (measured from the rising edge of the pulse on the first channel to the rising edge of the pulse on the second channel).
Operator output represents the time duration between pulses, expressed in seconds or milliseconds (the output format is a property of the operator). Output indicates when a new event time measurement becomes available. The output is HIGH for one schema compute cycle each time a new event is measured; otherwise the output is LOW. Output remains unchanged between event measurements.
The operator has a reset input x which clears its outputs (sets and ).

User-Defined Properties:
Object Name. A string label that identifies the operator.

Display Reset Input. This property determines if reset input pin x is visible in the schema diagram. Design Pad issues a warning upon processing the schema when the pin is visible but not connected. The warning message is not issued when the pin is not visible (when this property is not checked).

Output Format. Determines the time unit of measure (seconds or milliseconds) that the event duration should be expressed in.

Comments: None.

See Also:
Digital Input (Standard), Digital Input (Event Timer), Digital Input (Pulse Counter), Digital Input (Pulse Width), Digital Input (Quadrature Decoder)