Adlink USB-2405 Bedienungsanleitung PDF herunterladen (Seite 45)

Operation 35

USB-2405

Figure 3-7: Above-High Analog Triggering

External Digital Triggering

An external digital trigger occurs when a rising or falling edge is

detected on the digital signal connected to the GPIO pin. Trigger

polarity can be programmed using ADLINK software drivers.

Figure 3-8: Digital Triggering

Trigger Modes

Analog input supports post, delay, middle, gate, post trigger with

retrigger, and delay trigger with retrigger modes.

NOTE:

Signal level of the external digital trigger signals should be

3/3V/TTL-compatible, with a minimum pulse of 20ns.

Positive-edge

(rising) trigger event

occurs

Negative-edge

(falling) trigger

event occurs

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Adlink USB-2405 Bedienungsanleitung Seite 45