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PAIRGAIN TECHNOLOGIES
Technical Practice
Engineering - PLANT Series
CONTENTS
CAUTION
This product incorporates static sensitive
components. Proper electrostatic discharge
procedures must be followed.
™
PG-F
32 C
LEX
MODEL FRL-746 List 1
PairGain # 150-1346-01
PAGE
2
2
3
4
4
4
5
6
8
8
8
RT L
HANNEL
Figure 1. FRL-746 RT Line Unit, List 1, Front Panel. The
PairGain FRL-746 is the remote end of a PG-Flex subscriber
carrier system.
Section 363-746-100
U
INE
NIT
F R L 7 4 6
L IN E U N IT
1
LIS T
P W R
S YN C
LO O P 1
M A R G IN
S Y N C
LO O P 2
M A R G IN
FA ULT
T E S T
A C O
R S 2 32
&
Revision 01
May 13, 1996
Page 1
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Related Manuals for PairGain PG-FLEX FRL-746 List 1
Summary of Contents for PairGain PG-FLEX FRL-746 List 1
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Page 1: Table Of Contents
This product incorporates static sensitive components. Proper electrostatic discharge & procedures must be followed. Figure 1. FRL-746 RT Line Unit, List 1, Front Panel. The PairGain FRL-746 is the remote end of a PG-Flex subscriber carrier system. Page 1... -
Page 2: Product Overview
COT over two pairs of 19- to 26- or pair selection. gauge (0.9 mm to 0.4 mm) twisted-pair 1.02 The FRL-746 RT Line Unit resides in a PairGain telephone wire. Each pair carries both power RT Enclosure; one FRL-746 RT Line Unit is and HDSL signaling. -
Page 3: Specifications
Section 363-746-100 Revision 01 Figure 2. Typical PG-Flex Configuration. TABLE 1. PG-FLEX DISTANCES Loop Length Wire Gauge 16/32 Channel System Resistance 26 AWG (0.4 mm) 08.1 kft (2.5 km) 24 AWG (0.5 mm) 10.7 kft (3.3 km) 22 AWG (0.6 mm) 13.7 kft (4.2 km) 19 AWG... -
Page 4: Certification
This module should not be field repaired. If it 5.02 fails, replace it with another unit and return the faulty unit to PairGain for repair. Any modifications of the unit by anyone other than an authorized PairGain representative will void the warranty. -
Page 5: Front Panel
Section 363-746-100 Revision 01 ! Figure 3. FRL-746 Block Diagram. 7. FRONT PANEL Off —HDSL line 2 does not detect an active remote unit. 7.01 The front panel of the FRL-746 contains the following switch, indicators, and connector (see • LOOP 2 MARGIN LED Indicator Figure 1): Yellow—... -
Page 6: Terminal Management
Section 363-746-100 Revision 01 8. TERMINAL MANAGEMENT – Display Channel Status to show the current status of all channels in the 8.01 The terminal management function at the system. Each channel has one of the remote terminal enables a technician to monitor following status conditions: the entire PG-Flex system through an ASCII terminal (or equivalent) connected to the maintenance port. - Page 7 Section 363-746-100 Revision 01 Figure 4. FRL-746 DB-9 Pin Outs. A standard RS-232 (DB-9) connector on the front panel provides access to the menu interface feature via an ASCII terminal. Login M ain M enu S tatus S ystem S tatus C hannel S tatus H D S L S tatus H D S L 24-H our P erf orm ance History...
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Page 8: Installation And Test
PG-Flex terms. ensure complete and accurate shipment. If the shipment is short or irregular, contact PairGain as described in Section 5. If you TABLE 2. FRL-746 RT LINE UNIT TURN-UP AND TESTING CAUTION Observe normal electrostatic discharge precautions when handling electronic equipment. Do not hold electronic plug-ins by their edges. - Page 9 Section 363-746-100 Revision 01 TABLE 3. FRL-746 RT LINE UNIT TROUBLESHOOTING Indication Problem Action POWER 1. One or both HDSL lines a. Make the following measurement on the RT Enclosure backplane: LED off are no longer connected • 130 Vdc to 250 Vdc between A_HDSL_T and B_HDSL_T between the COT and b.
- Page 10 The number of seconds the HDSL loop was out of synchronization. This value is a running total of the last 24 hours. (Unavailable Seconds) Copyright © 1996, PairGain Technologies, Inc. PairGain is a registered trademark, CopperOptics and PG-Flex are trademarks of PairGain Technologies, Inc. Page 10...