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PAIRGAIN TECHNOLOGIES 

Section 363-752-100

Technical Practice 

Revision 01

Engineering - PLANT Series 

March 4, 1996

Page 1

P

AIR

G

AIN 

T

ECHNOLOGIES 

PG-F

LEX

 

RT C

HANNEL 

U

NIT

MODEL FRC-752 List 1

PairGain #150-1352-01

CONTENTS

PAGE

A. PRODUCT OVERVIEW

1.

DESCRIPTION AND FEATURES

2

2.

APPLICATIONS

2

3.

SPECIFICATIONS

3

4.

CERTIFICATION

4

5.

WARRANTY

4

B. FUNCTIONAL DESCRIPTION

6.

OPERATIONAL
CAPABILITIES

4

7.

FRONT PANEL

5

C. INSTALLATION AND TEST

8.

UNPACKING

5

9.

TURN-UP AND TESTING

5

10. TROUBLESHOOTING

5

CAUTION

This product incorporates static sensitive components.

Proper electrostatic discharge procedures must be

followed.

Figure 1. FRC-752 Channel Unit, List 1, Front Panel. The
PairGain FRC-752 provides four POTS interfaces between a PG-
Flex Remote Terminal and the subscriber.

Summary of Contents for PG-FLEX RT FRL-752

Page 1: ...NS 2 3 SPECIFICATIONS 3 4 CERTIFICATION 4 5 WARRANTY 4 B FUNCTIONAL DESCRIPTION 6 OPERATIONAL CAPABILITIES 4 7 FRONT PANEL 5 C INSTALLATION AND TEST 8 UNPACKING 5 9 TURN UP AND TESTING 5 10 TROUBLESHOOTING 5 CAUTION This product incorporates static sensitive components Proper electrostatic discharge procedures must be followed Figure 1 FRC 752 Channel Unit List 1 Front Panel The PairGain FRC 752 p...

Page 2: ...emote electronics and subscriber terminations The enclosure accepts one common RT Line Unit and up to four Channel Units The Remote Terminal communicates with and is line powered from the COT over two pairs of 19 to 26 gauge 0 9 mm to 0 4mm twisted pair telephone wire Each pair carries both power and HDSL signaling 2 03 HDSL Transmission PG Flex utilizes HDSL transmission technology between the CO...

Page 3: ...t Drive 15 REN maximum per RT 5 REN maximum per channel RT DC Supervisory Range 960 ohms Maximum cable loop resistance minus 430 ohms for handset is 530 ohms RT Idle State Loop Voltage On Hook Greater than 40 V dc Ring is negative with respect to Tip RT Loop Closure Off Hook Detection Less than 960 ohms between Tip and Ring RT On Hook Detection Greater than 10 kohms Operating Temperature Humidity ...

Page 4: ...and regular maintenance PairGain will repair or replace any unit without cost during this period if the unit is found to be defective for any reason other than abuse or improper use or installation 5 02 This module should not be field repaired If it 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 ...

Page 5: ...for a prolonged period store the equipment in its original container 9 TURN UP AND TESTING 9 01 Table 2 provides step by step turn up and test procedures for the FRC 752 Channel Unit 10 TROUBLESHOOTING 10 01 Table 3 provides troubleshooting procedures based on indications displayed by the front panel indicators of FRC 752 Channel Unit TABLE 2 FRC 752 RT CHANNEL UNIT TURN UP AND TESTING CAUTION Obs...

Page 6: ...ance shorts on the subscriber drop 2 If ringing isn t present on a circuit terminated on the same RT Channel Unit try ringing a line terminated on another RT Channel Unit If the line rings replace the RT Channel Unit If the line doesn t ring replace the RT Line Unit Phone Doesn t Stop Ringing Faulty subscriber station instrument faulty RT Channel Unit or loop length too long Phone stops ringing wh...

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