Positron BRX-XLR-8 User manual

BRX-XLR-8
8-pair Sealed Enclosure
Installation Guide
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Document 180-0164-001 R01

BRX-XLR-8 (8 pairs)
Summary Diagram of Typical Installation
DSLAM BRX-XLR-8
5-9 kft / 1.5-2.7 km from DSLAM (for 26 AWG / 0.4 mm equivalent gauge copper)
L1
Distance from DSLAM
L2
Distance to furthest CPE
Connecting the BRX-XLR-8
8 pairs from the CO
8 pairs to the
subscriber (CPE)
Shielded gel-lled
24 AWG/ 0.51mm cable
IMPORTANT NOTE: The BRX-XLR-8 unit is powered from the Sealing Current found on a standard POTS pair.
The BRX-XLR-8 will not work on a dry pair (line with no sealing current). Each pair of the BRX-XLR-8 is
powered independently with each pair requiring the presence of the sealing DC Voltage for proper operation.
Grounding Lug
Step 1: Select the location where the BRX-XLR-8 will be inserted
using the BRX-XLR Calculator for the longest loop.
Step 2: Connect the grounding lug of the unit to a proper ground
(usually available near the splice point).
Step 3: Insert a BRX-BYPASS-TEST module in slot 1 and ensure
that both switches are in BYPASS mode.
Step 4: Connect the rst two (2) pairs to be amplied to the rst
two (2) pairs of the BRX-XLR-8. Make sure to match the DSLAM
pair number to the CPE pair number.
Step 5: Test for continuity between the DSLAM pair and CPE
pair at the splice point. If the circuits are active, the LEDs on the
BRX-BYPASS-TEST module will be ON to conrm that the sealing
current is present on both lines. If either circuit is not active, the
continuity testing will conrm that the connections are reliable.
Step 6: Replace the BRX-BYPASS-TEST module with a BRX-
XLR-M module.
Step 7: The DSLAM and CPE will now retrain the circuit and bring
up the ADSL2+ / ADSL link with the amplied bandwidth. Note
that the performance may be limited (or capped) by a setting in
the DSLAM conguration.
Step 8: Repeat steps 3 to 7 for the other three (3) slots of the
BRX-XLR-8 enclosure.
Document 180-0164-001 R01
Slot
#
Channel
#
Line
#
Cable Pair
Colors
11 1 White / Blue
2 2 White / Orange
21 3 White / Green
2 4 White / Brown
31 5 Red / Blue
2 6 Red / Orange
41 7 Red / Green
2 8 Red / Brown
Mounting ange on both ends
of the sealed unit