User Manual - twentynine
5.5
Digital Input / Output Control
The digital inputs and outputs of the twentynine series can be used to synchronize the camera with other
devices and cameras. The camera can be triggered on a rising or falling edge of the input trigger signal,
or trigger other devices on configurable events. The physical interface is provided via the
General Purpose
Input and Output
(GPIO) connector, described in 3.3 - Power and I/O-Interface.
Each physical line is configured separately and can be selected by the
LineSelector
property. The property
LineMode
provides information if the currently selected line is an
Input
or
Output
. Table 35 describes all
available configuration properties.
Property
Type
Description
LineSelector
Enumeration
Select the line for configuration; all further properties
contain the values based on the selected line. Values
are:
•
Line1
•
Line2
LineMode
Enumeration
Specifies if the selected line is an Input or Output
LineStatus
Boolean
Current status of the selected line
LineSource
Enumeration
Source event driving the output line
LineFormat
Enumeration
Electrical format of the selected line
LineDebouncerTime
Float
Define the debouncer time of input lines (in
µ
s)
Table 35: Trigger Sources
5.5.1
Input Lines
The camera’s input lines can be used to trigger an acquisition of the camera on external events. Figure 45
shows the partial process of a complete image acquisition. The incoming electrical signal of the external
source is filtered by the
LineDebouncer
and raises the internal trigger signal (if valid). The user defined
TriggerDelay
increased by the fixed trigger latency caused by internal circuitry defines the start of the
triggered event.
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SMARTEK Vision | User Manual - twentynine | Doc. v1.0.2
