Measurement-computing USB-1602HS-2AO Manual do Utilizador descarregar pdf (Página 19)

USB-1602HS-2AO User's Guide Functional Details

Figure 8. Location of rear panel screws

2. Slide the board out of the housing and locate jumper J14.

Figure 9. Location of J14

3. Configure jumper J14 for either pull-up or pull-down configuration (refer to Figure 10).

o For pull-up, place the J14 shorting block across pins 1 and 2.

o For pull-down, place the J14 shorting block across pins 3 and 4.

Figure 10. J14 configuration

4. Slide the board into the housing.

5. Replace the 4 screws on the rear panel.

Digital outputs and pattern generation

Digital outputs can be updated asynchronously at any time before, during, or after an acquisition. The USB-

1602HS-2AO can generate a digital pattern at up to 4 MS/s.

Digital pattern generation is clocked with either the internal D/A scan clock or with an external D/A input

clock. Digital patterns can be generated along with D/A waveforms. They are paced by the same selected clock.

The on-board programmable clock generates updates ranging from once every 1000 seconds to 1 MHz,

independent of the acquisition rate.

The digital outputs are driven low at power up and reset.

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Measurement-computing USB-1602HS-2AO Manual do Utilizador Página 19