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