Principle Of Function Change Over Box; Principle "Change Over Box In The Std22--System - Raytheon 138-119 Operator's And Service Manual

2 Principle of function of the Change Over Box
2.1 Principle "Change Over Box in the STD 22- -System"
In the redundant system of the Standard STD 22 the Change Over Box and the Change
Over Switch are used to switch--over between the output signals of both systems.
The diagram below shows the principle of switching--over including the fault monitoring of
Compass system 1.
Figure 4: Principle of switching--over in the compass system STD 22
3769DOC000002
Change Over Box
138- -119
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COMPASS
STD22
Edition: April 06, 2005