Definition
Standard
IEC standard for substation environmental conditions
IEC 60870-2-2:1996
IEC standard defining immunity for power station
and substation environments
IEC 61000-6-5:2001
For more information about installing the module, see the Interface Module Installation.
For information on LEDs, see 14-Port Serial Interface Module LEDs.
For information on cables and pinouts see, Connecting Serial Cables and Serial Interface Modules Pinouts.
6-Port E and M Interface Module
The Cisco A900-IMA6EM is a 6-port Ear and Mouth (E&M) interface module. The interface module provides
the router with connectivity to tele-protection equipments. The front panel of the module consists of:
•
six port RJ45 connectors
•
two LED that display Power and Status
•
one LED per RJ45 port
Figure 24: E and M Interface Module
For more information about installing the module, see the
Interface Module Installation
section.
4-Port C37.94 Interface Module
The Cisco (A900-IMA4C3794) is a 4-port interface module that provides IEEE C37.94-2002 compliant Nx64
kbps optical interface ports to the router. The interfaces support 50/62.5 multimode fiber at 850 nm. The
physical interfaces use 2.5 mm ST connectors.
The front panel of the module consists of:
Cisco ASR 902 and ASR 902U Aggregation Services Router Hardware Installation Guide
33
Overview
Interface Modules
