Measurement-computing USB-3101 Manual de usuario descargar pdf (Pagina 15)

USB-3101 User's Guide Functional Details

29 VOUT1

30 NC

31 VOUT3

32 NC

33 AGND

34 NC

35 NC

36 NC

37 NC

38 AGND

39 NC

40 NC

41 NC

42 NC

43 AGND

44 NC

45 NC

46 NC

47 NC

50 DGND

51 NC

52 CTR

53 DGND

54 DIO CTL

55 DGND

56 +5V

48 AGND

49 SYNCLD

VOUT0 1

NC 2

VOUT2 3

NC 4

AGND 5

NC 6

NC 7

NC 8

NC 9

AGND 10

NC 11

NC 12

NC 13

NC 14

AGND 15

NC 16

NC 17

NC 18

NC 19

AGND 20

DIO0 21

DIO1 22

DIO2 23

DIO3 24

DIO4 25

DIO5 26

DIO6 27

DIO7 28

Figure 5. USB-3101 signal pin out

Analog voltage output terminals (VOUT0 to VOUT3)

The screw terminal pins labeled VOUT0 to VOUT3 are voltage output terminals (see Figure 5). The voltage

output range for each channel is software-programmable for either bipolar or unipolar. The bipolar range is

±10 V, and the unipolar range is 0 to 10 V. The channel outputs may be updated individually or simultaneously.

Digital I/O terminals (DIO0 to DIO7)

You can connect up to eight digital I/O lines to the screw terminals labeled DIO0 to DIO7 (pins 21 through 28).

You can configure each digital bit for either input or output.

When you configure the digital bits for input, you can use the digital I/O terminals to detect the state of any

TTL-level input. Refer to the switch shown in Figure 6 and the schematic shown in Figure 8. When the switch

is set to the +5 V USER input, DIO7 reads TRUE (1). If you move the switch to DGND, DIO7 reads FALSE

(0).

Pin 53

DGND

Pin 56

+5V

Pin 28

DIO7

Figure 6. DIO7 detecting the state of a switch

+5V

DGND

DIO7

Figure 7. Schematic showing DIO7 detecting the state of

a switch

1 2 ... 10 11 12 13 14 15 16 17 18 19 20 ... 23 24

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