National Instruments SCXI-1121 Manuel D’Utilisation

SCXIbus to SCXI-1121 rear signal 

connector to DAQ board pin 
equivalences (table), 2-41

MTEMP signal (table), 2-18, D-3
MTS mode, terminal blocks, 2-31 to 2-32
multiple-chassis scanning

programming, 5-12 to 5-13
theory of operation, 3-20

multiplexed output, single-channel 

measurements, 5-4 to 5-5

multiplexed scanning

multiple-module

description, 3-19
programming, 5-12

overview, 3-17 to 3-18
single-module, 3-18 to 3-19

direct, 3-18
indirect, 3-18 to 3-19
programming, 5-11 to 5-12

Multiplexed-Output mode, 3-16
MUXCOUNTER, 3-15 to 3-16

National Instruments Web support, G-1 to G-2
NI-DAQ software, 1-2

for Macintosh, 1-3

notation, for programming, 5-1
nulling circuitry, SCXI-1321 terminal block, 

2-25 to 2-27

formula for nulling range, 2-26 to 2-27
jumper settings (table), 2-28
nulling resistors and corresponding 

channel (table), 2-26

trimmer potentiometer and corresponding 

channel (table), 2-25

offset null adjust, in calibration, 3-12 to 3-13

offset-null terminal block. See SCXI-1321 

terminal block.

ONCE bit, 4-7
online problem-solving and diagnostic 

resources, G-1

operation of SCXI-1121. See theory of 

operation.

optional equipment (table), 1-4
optional software, 1-2 to 1-3
OUTREF signal (table), 2-38, B-2

parallel output, single-channel 

measurements, 5-4

parallel scanning, single-module

description, 3-17
programming, 5-10

Parallel-Output mode, 3-16
parts locator diagrams

Revision A and B

detailed, F-3
general, F-2

SCXI-1121

detailed (figure), 2-2
general (figure), 2-1

SCXI-1320 terminal block, 2-34
SCXI-1321 terminal block, 2-36
SCXI-1328 terminal block, 2-35

physical specifications, A-4
pin assignments

front connector (figure), 2-17, D-2
rear signal connector (figure), 2-37, B-1
SCXI-1343 Rear Screw Terminal Adapter 

(table), E-14 to E-16

SCXIbus connector (figure), C-2

pin translations (table)

SCXI-1341 Lab-NB, Lab-PC, or 

Lab-PC+ cable assembly, E-5

SCXI-1342 PC-LPM-16 cable assembly, 

E-6 to E-7