National Instruments SCXI-1121 Manuel D’Utilisation

Index

Index-7

SCXI-1121 User Manual

SCXI-1344 Lab-PC+ cable assembly, E-5

problem-solving and diagnostic resources,

online, G-1

programming, 5-1 to 5-17

notation, 5-1
register writes, 5-2 to 5-4

initialization, 5-4
register selection and write

procedure, 5-2 to 5-3

SCXI-1121 rear signal connector

equivalences (table), 5-2

scanning measurements, 5-7 to 5-15

acquisition enable, triggering, and

servicing, 5-14 to 5-15

Counter 1 and SCANDIV,

5-9 to 5-10

data acquisition board setup,

5-7 to 5-9

examples, 5-15 to 5-17
module programming, 5-10 to 5-13
multiple-chassis scanning,

5-12 to 5-13

multiple-module multiplexed

scanning, 5-12

single-module multiplexed scanning

(indirect), 5-11 to 5-12

single-module parallel

scanning, 5-10

Slot 0 hardscan circuitry,

5-13 to 5-14

single-channel measurements, 5-4 to 5-6

direct measurements, 5-4 to 5-5
indirect measurements, 5-5 to 5-6
multiplexed output, 5-4 to 5-5
from other modules, 5-5
parallel output, 5-4
from SCXI-1121 via another module,

5-5, 5-6

programming languages, SCXI-1121 support

for, 1-2 to 1-3

RD bit, 4-7
rear signal connector, 2-37 to 2-46

analog output, 2-39
communication signals, 2-42 to 2-46
digital I/O, 2-40 to 2-41
pin assignments (figure), 2-37, B-1
SCXIbus to SCXI-1121 to DAQ board

pin equivalences (table), 2-41

signal descriptions (table), 2-38, B-2
timing requirements and communication

protocol, 2-42

reference mode selection, jumper settings for,

2-6 to 2-7

Configuration Register

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

initialization, 5-4
register selection and write procedure,

5-2 to 5-3

SCXI-1121 rear signal connector

equivalences (table), 5-2

registers, 4-1 to 4-9

Configuration Register

description, 4-3 to 4-5
overview, 3-7
write timing diagram, 2-45
writing to, 2-44 to 2-45, 3-7 to 3-8,