Chapter 6 Connecting AI Signals on the USB-6215/6218 Devices

Table 6-1.I/O Connector Signals (Continued)

Channel

Signal +

Signal –

 

 

 

 

 

 

3

A I3

AI 11

 

 

 

4

A I4

AI 12

 

 

 

5

A I5

AI 13

 

 

 

6

A I6

AI 14

 

 

 

7

A I7

AI 15

 

 

 

16*

AI 16

AI 24

 

 

 

17*

AI 17

AI 25

 

 

 

18*

AI 18

AI 26

 

 

 

19*

AI 19

AI 27

 

 

 

20*

AI 20

AI 28

 

 

 

21*

AI 21

AI 29

 

 

 

22*

AI 22

AI 30

 

 

 

23*

AI 23

AI 31

 

 

 

* USB-6218 devices only.

 

 

 

 

 

Refer to Figure 6-1for an illustration of a differential connection configuration.

 

 

AI0+

 

 

V1

 

AI0– (AI8)1

 

 

 

MUX

PGIA

ADC

 

 

 

 

 

 

AI1+

 

 

Vcm

V2

AI1– (AI9)1

 

 

 

 

AI GND

 

 

 

 

 

 

USB-6215/6218

 

 

1 This signal name indicates the differential pair. Refer to

 

 

Table1 for a list of differential signal pairs.

 

Figure 6-1.Connecting a Device to a USB-6215/6218 Using Differential Connections