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1258 User Manual
Racal Instruments
©
2005
Functional Description 3-1
Chapter 3
FUNCTIONAL DESCRIPTION
General
The 1258 uses an embedded controller with operational software
to control a set of switching cards. The software receives
commands through the front panel manual keypad or the remote
interfaces. Matrix routing is controlled through a digital link to the
switching cards. A simplified functional block diagram of the
instrument is shown in Figure 3-1.
POWER
SUPPLY
SWITCHING CARD 1
SWITCHING CARD 2
SWITCHING CARD 3
SWITCHING CARD 4
16
16
16
16
16
16
16
16
ALPHA-
NUMERIC
KEYPAD
GRAPHICAL
DISPLAY
AC
POWER
SERIAL
INPUTS
OUT
P
UT
S
GPIB
10-BASE-T
RS-232
EMBEDDED
CONTROLLER
(PC104)
GPIB
(PC104)
DIGITAL
I/O
(PC104)
ETHERNET
(PC104)
Figure 3-1. Functional Block Diagram
Содержание 1258
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