National Instruments SCXI-1121 Manuel D’Utilisation

You can use a standard 50-pin ribbon cable instead of the SCXI-1340 cable 
assembly. The SCXI-1340 has the following advantages over the ribbon 
cable:

•

The SCXI-1340 has strain relief so that you cannot accidentally 
disconnect the cable.

•

The SCXI-1340 includes a mounting bracket that mounts to the chassis 
so that you can remove and reinsert the module without explicitly 
removing the cable from the back of the chassis. This is especially 
useful when the SCXI chassis is rack mounted, making rear access 
difficult.

•

The SCXI-1340 has an extra male breakout connector for use with the 
SCXI-1180 feedthrough panel or additional modules or breadboards 
that need a direct connection to the MIO-16 board.

•

The SCXI-1340 rear panel gives the module and the chassis both 
mechanical and electrical shielding.

Table E-1 lists the pin equivalences of the MIO-16 and the SCXI-1121.

Table E-1.  SCXI-1121 and MIO-16 Pinout Equivalences

1–2

AOGND

AIGND

3

MCH 0+

ACH0

4

MCH 0–

ACH8

5

MCH 1+

ACH1

6

MCH1–

ACH9

7

MCH2+

ACH2

8

MCH2–

ACH10

9

MCH3+

ACH3

10

MCH3–

ACH11

11

MCH4+

ACH4

12

MCH4–

ACH12

19

OUTREF

AISENSE

24, 33

DIG GND

DIG GND