background image

Figure 2.  NI USB-7846R Pinout

DIO30

GND

DIO28

GND

DIO26

GND

DIO24

GND

DIO22

GND

DIO20

GND

DIO18

GND

DIO16

GND

DIO14

GND

DIO12

GND

DIO10

GND

DIO8

GND

DIO6

GND

DIO4

GND

DIO2

GND

DIO0

GND

GND

GND

DIO31

DIO29

GND

GND

DIO25

GND

DIO23

GND

DIO27

GND

DIO21

GND

DIO19

GND

DIO17

GND

DIO15

GND

DIO13

GND

DIO11

GND 

DIO9

GND

DIO7

GND

DIO5

GND

DIO3

GND

DIO1

GND

GND

GND

68 34
67 33
66 32
65 31
64 30
63 29
62 28
61 27
60 26
59 25
58 24
57 23
56 22
55 21
54 20
53 19
52 18
51 17
50 16
49 15
48 14
47 13
46 12
45 11
44 10
43

9

42

8

41

7

40

6

39

5

38

4

37

3

36

2

35

1

+5V

DIO0

DIO1

DIO2

DIO3

DIO4

DIO5

DIO6

DIO7

DIO9

DIO11

DIO13

DIO15

AO7

AO6

AO5

AO4

AO3

AO2

AO1

AO0

AISENSE

AI7+

AIGND6

AI6+

AI5+

AIGND4

AI4+

AI3+

AIGND2

AI2+

AI1+

AIGND0

AI0+

+5V

DGND

DGND

DGND

DGND

DGND

DGND

DGND

DGND

DIO8

DIO10

DIO12

DIO14

AOGND7

AOGND6

AOGND5

AOGND4

AOGND3

AOGND2

AOGND1

AOGND0

NC 

AI7–

AIGND7

AI6–

AI5–

AIGND5

AI4–

AI3–

AIGND3

AI2–

AI1–

AIGND1

AI0–

68 34
67 33
66 32
65 31
64 30
63 29
62 28
61 27
60 26
59 25
58 24
57 23
56 22
55 21
54 20
53 19
52 18
51 17
50 16
49 15
48 14
47 13
46 12
45 11
44 10
43

9

42

8

41

7

40

6

39

5

38

4

37

3

36

2

35

1

CONNECTOR 0

(DIO)

CONNECTOR 1

(MIO)

TERMINAL 34

TERMINAL 68

TERMINAL 1

TERMINAL 35

TERMINAL 34

TERMINAL 68

TERMINAL 1

TERMINAL 35

Connectivity Options

Use the following connection accessories and cables to access the signals on the I/O
connectors.

NI USB-7846R User Manual

  | 

© National Instruments

  | 

3

Summary of Contents for 7846R

Page 1: ...product specifications These requirements and limits are designed to provide reasonable protection against harmful interference when the product is operated in its intended operational electromagneti...

Page 2: ...vervoltage Protection Overvoltage Protection FPGA Temperature 40 MHz OSC AO x8 USB NI ASIC Kintex 7 FPGA NI USB 7846R Flash Memory DIO 5 V Reference DAC AO ADC AI CONNECTOR 0 DIO CONNECTOR 1 MIO Data...

Page 3: ...DIO9 DIO11 DIO13 DIO15 AO7 AO6 AO5 AO4 AO3 AO2 AO1 AO0 AISENSE AI7 AIGND6 AI6 AI5 AIGND4 AI4 AI3 AIGND2 AI2 AI1 AIGND0 AI0 5V DGND DGND DGND DGND DGND DGND DGND DGND DIO8 DIO10 DIO12 DIO14 AOGND7 AOGN...

Page 4: ...ed or differential voltage signals Use the AISENSE pin to connect non referenced single ended signals Connecting Single Ended Voltage Signals To connect referenced single ended voltage signals to the...

Page 5: ...ial signals to the NI USB 7846R you must also connect the signal reference to AI GND Figure 5 Connecting Grounded Differential Signals to the NI USB 7846R PGIA ADC AI NI USB 7846R Connection Accessory...

Page 6: ...ect a load Figure 7 Connecting a Load NI USB 7846R Connection Accessory AOGND LOAD AO DAC Digital I O The NI USB 7846R provides connections for 48 digital input output DIO channels Connector 0 contain...

Page 7: ...t as input low with pull down resistors To set another power on state you can configure the NI USB 7846R to load a VI when the system powers on The VI can then set the DIO lines to any power on state...

Page 8: ...istance To reduce the magnetic coupling between lines separate them by a reasonable distance if they run in parallel or run the lines at right angles to each other Do not run signal lines through cond...

Page 9: ...s Tighten the screws to a torque of 0 4 N m 3 6 lb in 2 Clip the bracket onto the DIN rail as shown Figure 10 DIN Rail Clip Parts Locator Diagram 1 2 3 1 DIN Rail Clip 2 DIN Rail Spring 3 DIN Rail 3 P...

Page 10: ...riptions Symbol LED Description POWER Solid blue when the power is on USB READY Solid blue when the USB is ready ERROR Solid red for error cases 1 USER USER1 Blue user defined 2 USER USER2 Blue user d...

Page 11: ...ents is not liable for damage resulting from such a connection The power rating is 4 75 to 5 1 VDC at 0 5 A Autonomous Mode You can run the NI USB 7846R without a USB connection to a host computer usi...

Page 12: ...the NI USB 7846R to a host computer before powering off the device Refer to the LabVIEW FPGA Module Help for more information about downloading an FPGA VI to the flash memory Worldwide Support and Ser...

Page 13: ...s section of ni com niglobal to access the branch office websites which provide up to date contact information support phone numbers email addresses and current events NI USB 7846R User Manual Nationa...

Page 14: ...p Patents in your software the patents txt file on your media or the National Instruments Patent Notice at ni com patents You can find information about end user license agreements EULAs and third par...

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