Physics and Engineering of Radiation Detection

13.3. PC Based Systems 731

Control

Data

Data

RAM

(a)

Control

PCI Bus

Data

(b)

Data

Display

Storage

Storage

Display

Microprocessor

Microprocessor

DAQ Module

DAQ Module

RAM

PCI Bus

Figure 13.3.1: PCI

based DAQ systems. (a)

Conventional PCI mod-

uledataflow. (b)Data

flow with PCI module

having bus mastering ca-

pability.

1 2 456789 11

1

6 7

(b)

(a)

13

14 15 17 19 23 24 25

10 12

18 20 21 22

89

2 3

3

54

16

Figure 13.3.2: (a) 25-pin

and (b) 9-pin RS232 male

connectors. Pin assign-

ments are given in table

13.3.1.

the module is to be installed far away from the PC. In such a situation one can use
a serial to TCP/IP converter and connect it to the existing computer network. The
data and control signals can then be transported to and from a remote PC anywhere
on the network. We will discuss such solutions shortly.