Extreme Networks E4G Series, Hardware Installation Manual

Page: 56 / 142

Chapter 3: Installing an E4G Series Router
E4G Series Routers Hardware Installation Guide
56
The alarm input signals have an operational voltage range of 0V to 56V DC. The current range is 0A to
1A (maximum voltage 30VDC at 1A). However, the maximum operational voltage is only 5.5 V for PCB
version 3A1. For PCB version 4A1 it is 56V.
To increase noise immunity and prevent false alarms you should use the configuration shown in “Reset
Alarm/Alarm Input Connections” on page 56 . The alarm cable should be twisted pair.
Figure 27: Reset Alarm/Alarm Input Connections
Installing the E4G-400 Cell Site Aggregation Router
When you unpack the E4G-400 Cell Site Aggregation Router, verify that the package contains the
following items:
●
E4G-400 router
●
2 rack-mounting brackets with 8 screws
●
Console cable terminated in DB-9 connectors
●
Ferrite in-line noise filter with installation instructions
●
Power supply (AC or DC)
The E4G-400 router is shipped with one power supply. A second power supply for redundant power
is ordered and shipped separately.
NOTE
An AC power input cord is not provided with an E4G-400 AC power supply. You can order an
appropriate cord from Extreme Networks or from your local supplier. The power cord must meet the
requirements listed in
“Power Supplies for the E4G-400 Router” on page 123 .
The E4G-400 Cell Site Aggregation Router can be installed in either a mid-mount or front-mount
position in a standard 19-inch equipment rack.
The installation procedure includes the following tasks:
1 Install the E4G-400 router in the equipment rack.
2 Install power supplies.
3 Install optional modules at the back of the router.
4 Connect the console cable and perform initial configuration.
E4G-200
Customer
Alarm Panel
Alarm Cable