Configuration
5.2.1.1
5.2.1.2
5.2.1.3
5.2.1.4
5.2.1.5
5.2.1.6
5.2.1.7
MAIN POWER SUPPLY
The Digital Chassis requires a Main Power Supply, which is mounted in the front of the chassis at the
extreme far left slot.
REDUNDANT POWER SUPPLY
As an option the Digital Chassis can have a Redundant Power Supply. When used, this supply is
mounted in the front of the chassis immediately to the right of the Main Power Supply.
POWER SUPPLY ALARM I/O
The Digital Chassis requires a Power Supply Alarm I/O. This module is located at the rear of the
chassis directly behind the Main Power Supply.
CM4 COMMON MODULES
The Digital Chassis can have either one or two CM4 modules installed. If only one CM4 is installed, it
must be installed at the front of the chassis in slot 10. This is referred to as the CM4 Main Common
Module. The CM4 in slot 10 does not require a Module Adapter since it is connected to the
Transceiver Module through the motherboard. The CM4 in slot 10 is used for Terminal End or Drop
and Insert-A (DI-A) applications.
If a second CM4 is used it must be installed in the front of the chassis in slot 1. This is the Optional
Common Module. The CM4 in slot 1 is used for Drop and Insert-B (DI-B) applications.
CM4 MODULE ADAPTERS
The CM4 in slot 1 requires a Module Adapter, which can be an MA-271, an MA-278 or an Optical
I/O. The MA-271 is used for E1 only, and uses BNC connectors. The MA-278 is used for T1 or E1
applications and uses an RJ48C connector. The Optical I/O is used for optical fiber installations.
PLC-TT TELEPROTECTION MODULE
In chassis that require teleprotection, a PLC-TT module can be installed in the front of the chassis in
slots 5 or 11 only.
PLC-TT MODULE ADAPTER
The PLC-TT module requires a module adapter. There are four types of 2-function module adapters,
and four types of 4-function module adapters that can be used with the PLC-TT module. The 2-
function module adapters occupy three module slots at the rear of the chassis, and the 4-function
module adapters occupy six module slots at the rear of the chassis. Most installations will have only
one PLC-TT Module Adapter installed at the rear of the chassis. Some installations will have two
PLC-TT Module Adapters installed at the rear of the chassis. Refer to Table 5-3 to determine where
these module adapters must be placed.
RFL 9508D UCC
RFL Electronics Inc.
May 27, 2011
5-4
(973) 334-3100
