National Instruments PCI-8254R Uživatelský manuál stáhnout pdf (Strana 32)

Chapter 3 Signal Connections

NI PCI-8254R User Manual 3-6 ni.com

16 2 TTL Input 1 Pulse generator

trigger input

Trigger Change

Detector,

General-purpose

input

17 3 C Common-mode

signal of the

NI 8254R main

power

—

18 20 TTL Output 4 Pulse generator

output

General-purpose

output

19 21 TTL Output 5 General-purpose

output

—

20 22 C Common-mode

signal of the

NI 8254R main

power

—

21 23 TTL Output 6 General-purpose

output

—

22 24 TTL Output 7 General-purpose

output

—

23 22 C Common-mode

signal of the

NI 8254R main

power

—

24 NC TRIG 1

*

/TTL

Output 9

Pulse generator

output

General-purpose

output

25 33 V

iso

Isolated power —

26 34 C

iso

Isolated

common-mode

signal

—

Table 3-3. Signal Connections (Continued)

44-Pin D-SUB

on NI 8254R

Pin Number

37-Pin Terminal

Block Number

Signal Name

Primary

Function

Alternate

Function

1 2 ... 27 28 29 30 31 32 33 34 35 36 37 ... 42 43

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