150-319-205-05, Issue 5
Product Description
ELU-319 List 5E and List 6E
January 26, 2000
11
System Alarm Output Pin
Pin H on the card-edge connector (see
Figure 2
) is the ELU-319 System Alarm output pin. The following notes
apply to Pin H:
•
Pin H replaces the Local Loss of Signal (LLOS) on normal high-density (3192) repeaters.
•
The normally floating output of Pin H can connect to Pin 1 of the 1184 or 3192-9F Alarm Card in position
29 of the High Density (HD) shelf.
•
The ELU-319 forces Pin H to +5 V (maximum of 10 mA) for a system alarm condition. Pin H then remains
at +5 V for the duration of the alarm condition.
•
If the Wescom 1184 Alarm Card is installed in the shelf, its LOS LED lights for every MNRALM.
•
The ELU-319 Status LED flashes red for the duration of a system alarm condition.
•
Setting the ALM option to DIS only prevents the system alarm bus on Pin H from being activated for a system
alarm event. The STATUS LED still flashes red and the “ALRM” message still displays.
Pin H must never be taken above +5 V or below -60 V.
