Revision
04
February 19, 1998
363-765-104-04
14
PairGain
Engineering - Plant Series
FRE-765
List
4x
Installation Requirements
Prior to installing the FRE-765, review installation requirements and conditions in
Mounting
The FRE-765 mounts on a pole or a wall. Follow local practices to ensure a secure mounting. Mount the FRE-765
for easy access to the cable entry points on the bottom of the enclosure. Provide ample room to open the door
completely.
Table 10.
Installation Requirements
Requirement
Description
Environmental
The FRE-765 can operate in an outside plant environment in a temperature range of -40°C to
+65°C and a humidity range of 5% to 95% (non-condensing).
Mounting
The RT enclosure has external mounting flanges with a clearance hole for a 3/8-inch bolt for pole
or wall mounting. The customer must provide the appropriate mounting hardware. When
mounting to a pole using the Pole Mounting Kit (part number 150-1397-0x), ensure that the kit
and FRE-765 are fully installed before installing cabling.
Power
The FRE-765 gets power from the HDSL lines connected to the COT shelf in the
Central Office (CO). When a doubler is installed between the PG-Flex COT Shelf and RT
enclosure, two additional power pairs are required from the COT shelf to the RT enclosure.
HDSL Lines
Two HDSL pairs are terminated in the RT enclosure.
Subscriber Lines
List 4
Provides three 25-pair Amphenol connectors (male) for terminating the subscriber lines.
List 4A
Provides AMP Quiet Front insulation displacement connections for subscriber terminations.
List 4B
Provides one 15-foot PVC 25-pair cable stub.
List 4D
Provides two 25-foot Air Core Cables for HDSL and Subscriber Terminations.
List 4E
Provides two 25-foot Gel Filled Cables for HDSL and Subscriber Terminations.
List 4F
Provides one 1-foot PVC Cable with Amphenol for Subscriber Terminations.
List 4G
Provides one 12-foot PVC Cable with Amphenol for Subscriber Terminations.
List 4H
Provides RayChem Modular Station Protector (MSP) for Subscriber Terminations.
Metallic Bypass Pair
The metallic bypass pair for subscriber line testing is terminated in the FRE-765. Do not connect
the bypass pairs between PG-Flex systems or to other DLC systems.
Doubler (except 4H)
When using a doubler, add two terminals to the FRE-765 to terminate the auxiliary power pairs
from the COT. Order the terminal kit (Amp Quiet Front p/n 150-1399-25), which contains two
terminators, four jumpers, and two screws for mounting the terminations on the RT enclosure
backplane.
Cable Entry
Knockouts are located on the bottom of the FRE-765 and accept
3
/
4
-, 1-, 1
1
/
2
-
, and 2-inch
fittings. Install the grommet (provided with FRE-765), conduit, or cable strain relief fittings prior
to wiring the FRE-765.
Protectors
Install 5-pin protectors (short housing) for each working subscriber circuit with the List 4A, List
4D, List 4E, and List 4F. These may be carbon, gas tube, or solid state protectors, depending on
local practice.
