Notifier AIM-200, Руководство пользователя, Страница: 14 / 60

14 Document 15949 Rev. E 4/12/95 P/N 15949:E
resistn3
Loop Out
Loop Return
Figure 3-5: Redundant Circuit
Total length of the communications loop pair cannot exceed 10,000 feet (measured from the
control panel out, and back to the control panel).
The DC resistance of the communications loop pair cannot exceed 40 ohms. This measure-
ment may be obtained by disconnecting loop out and return at the control panel, shorting
the two leads of communications loop return together and metering loop out.
No T-tapping is allowed
on a redundant circuit.
+ - + -
A IM -2 0 0
Loop
Out
aimwire2
Loop
Return
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