National Instruments SCXI-1121 Manuel D’Utilisation

cable assemblies. See SCXI-1121 cabling.
cables, custom, 1-5
calibration, 3-11 to 3-14

equipment requirements, 3-11 to 3-12
excitation adjust, 3-13 to 3-14
offset null adjust, 3-11
potentiometer reference designators 

(table), 3-14

CGND signal (table), 2-18, D-3
CH0+ signal (table), 2-19, D-4
CH0- signal (table), 2-19, D-4
CH1+ signal (table), 2-19, D-4
CH1- signal (table), 2-19, D-4
CH2+ signal (table), 2-19, D-4
CH2- signal (table), 2-19, D-4
CH3+ signal (table), 2-18, D-3
CH3- signal (table), 2-18, D-3
CHAN<1..0> bits, 4-4
CHS<4..0> bits, 4-6
CHSGND signal (table), 3-4, C-3
CLKEN bit, 4-8
CLKOUTEN bit, 4-3
CLKSELECT bit, 4-3
CNT<6..0> bits, 4-9
cold-junction sensor specifications, 

A-3 to A-4

communication signals, 2-42 to 2-47

overview, 2-42
reading from Module ID Register, 

2-45 to 2-46

serial data timing diagram, 2-44
slot-select timing diagram, 2-43
timing requirements for SERCLK and 

SERDATIN signals (figure), 2-44

writing 16-bit slot-select number to 

Slot 0, 2-43

writing to Configuration Register, 

2-44 to 2-45

completion network jumpers (table), 

2-12 to 2-13

configuration

analog, 2-6 to 2-13

excitation jumpers, 2-9 to 2-13
filter jumpers, 2-9
gain jumpers, 2-8
grounding, shielding, and reference 

mode selection, 2-6 to 2-7

input channel jumpers, 2-8 to 2-13
jumper W33, 2-6 to 2-7

digital signal connections

jumper settings (figure), 2-5 to 2-6
jumper W32, 2-4
jumper W38, 2-4
jumper W44, 2-3 to 2-4
using jumpers W32 and W38, 

2-4 to 2-5

excitation jumpers, 2-9 to 2-13

current and voltage jumpers, 

2-9 to 2-10

excitation level, 2-10 to 2-11
internal half-bridge completion, 

2-12 to 2-13

fixed jumpers, 2-2
parts locator diagrams

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

terminal blocks, 2-31 to 2-32
user-configurable jumpers, 2-2 to 2-3

Configuration Register

description, 4-3 to 4-5
overview, 3-7
write timing diagram, 2-45
writing to

digital control circuitry, 3-7 to 3-8
programming, 5-2 to 5-4
slot-selection procedure, 2-44 to 2-45

connector-and-shell assembly, 2-22 to 2-24
connectors. See front connector; rear signal 

connector; SCXIbus connector.

conventions used in manual, xi-xii