User manual

Trigger
After startup of CEBO-STICK, the multifunction IO-0 is configured as digital input signal.
To use the trigger functionalities, output or input, the corresponding peripheral needs to
be enabled first. This is done by software calls (API). While IO-0 is used as trigger
input / output, digital IO functionalities or counter input are not available. With the help of
the trigger output signal you can, for example, synchronize multiple CEBO-STICK
devices. With the trigger as input signal, you can delay data acquisition until the
occurrence of an external event.
Pin Signal Description
4 IO-0 Multifunction IO:
Default: Digital input / output 0
Alternate: Trigger input / output or counter input
5 GND GND power terminal
Trigger input
In trigger input mode, you have to supply an external signal to terminal IO-0. You can
use trigger events, for example, to delay the start of a buffered or continuous data
acquisition until the occurrence of an external signal. In external timed data acquisition
modes each trigger event trips the recording of a new frame, therefore the input signal
defines the frame rate. CEBO-STICK can be configured for three different types of
trigger input signals: rising edge, falling edge or alternating.
Rising edge mode
In rising edge mode, every transition from low to high level on IO-0 is a trigger event.
Falling edge mode
In falling edge mode, every transition from high to low level on IO-0 is a trigger event.
CEBO-STICK Reference Manual Cesys GmbH
[ v1.1 ] 10/28
Figure 4: Trigger IO pin assignment