Measurement-computing USB-2020 Manual do Utilizador descarregar pdf (Página 17)

USB-2020 User's Guide Functional Details

Each configuration is explained below:

 High or low level − Trigger or gate an acquisition when an input signal is higher or lower than the specified

voltage.

 Rising or falling edge − Trigger an acquisition when input signals cross a specified voltage (rising or

falling)

 Window − Gate an acquisition when the input signal is within or outside two specified voltages (in/out of

window)

 Hysteresis − After the input signal has passed through one specified voltage, trigger an acquisition when

the input signal passes through a second voltage (positive or negative). For example, once the signal goes

below 5 V, a rising edge that crosses 4 V must occur to trigger an acquisition.

Mechanical drawing

Figure 8. USB-2020 board dimensions

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Measurement-computing USB-2020 Manual do Utilizador Página 17