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Operation 33

USB-2405

Figure 3-5: Input Frequency Response for High Speed Mode (Fs=102.4kS/s)

3.3 Triggering

The USB-2405 supports flexible trigger sources and trigger modes

for analog input functionality. The trigger source can originate with

software command, external analog, or external digital signal in

continuous analog input mode. Trigger source and mode are pro-

grammable by software.

3.3.1 Analog Input Trigger Source

Software Triggering

This trigger mode requires no external trigger signals. The trigger

asserts immediately following execution of the specified function

calls to begin the operation.

5 10 15 20 25 30 35 40 45 50 55

−60

−50

−40

−30

−20

−10

X: 50

Y: −2.27

Input Signal Frequency (kHz)

(dB)

−3dB Bandwidth (Fs = 102.4KS/s)

1 2 ... 38 39 40 41 42 43 44 45 46 47 48 ... 55 56

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Adlink USB-2405 Bedienungsanleitung Seite 43