CopperOptics PairGain HiGain-2 HRU-612 Manual - Page 4

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Section 150-612-100

Revision 02

5. WARRANTY

5.01

PairGain Technologies warrants this product

to be free of defects and to be fully functional

for a period of 60 months from the date of original

shipment, given proper installation 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 PairGain representative will void the

warranty.

5.03

If a unit needs repair, call PairGain for a

Return Material Authorization (RMA) number

and return the defective unit, freight prepaid, along

with a brief description of the problem, to:

PairGain Technologies, Inc.

14352 Franklin Avenue

Tustin, CA 92680

ATTN: Repair and Return Dept.

(714) 832-9922

(800) 638-0031

5.04

PairGain will continue to repair or replace

faulty modules beyond the warranty program

at a nominal charge. Contact your PairGain sales

representative for details and pricing.

6. TECHNICAL ASSISTANCE

6.01

PairGain Technical Assistance is available

24-hours-a-day, 7-days-a-week by

contracting PairGain's Customer Service

Engineering group at one of the following numbers:

Telephone:

Fax:

During normal business hours (8:00 AM to 5:00 PM,

Pacific Time, Monday - Friday, excluding holidays),

technical assistance calls are answered directly by a

Customer Service Engineer. At other times, a

request for technical assistance is handled by an on-

duty Customer Service Engineer through a callback

process. This process results in a callback within 30

minutes of initiating the request.

Page 4

(800) 638-0031

(714) 832-9922

(714) 832-9924

In addition, PairGain maintains a computer bulletin

board system for obtaining current information on

PairGain products, product troubleshooting tips and

aids, accessing helpful utilities, and for posting

requests or questions. This system is available 24-

hours-a-day by calling (714) 730-3299.

Transmission speeds up to 28.8 kbps are supported

with a character format of 8-N-1.

B. FUNCTIONAL DESCRIPTION

7. FUNCTIONAL OPERATION

7.01

HiGain-2 utilizes PairGain's 2B1Q VHDSL

transceiver technology to establish a full-

duplex 1568 kb/s data channels between the HLU

and a remotely mounted HRU-612 HiGain-2 Remote

Unit.

7.02

The HRU-612 power supply converts the

metallic 170 Vdc power feed that is received

on the VHDSL pair to voltages and currents required

by the HRU-612 circuitry. The power supply

generates +5, -5 and 30 Vdc outputs. The 30V

output is converted to a 60 ma current feed used to

simplex power the NID (Network Interface Device).

Caution should be used when the HRU is used to

power CSUs. Some CSUs require more output

voltage than the 30 volts provided by the HRU. The

HRU can not power both an NID and a CSU at the

same time.

7.03

The HRU-612 typically dissipates 6 watts of

power and may consume up to 8 watts

when feeding 60 mA. of simplex current to the CI.

7.04

The worst case -48V power consumption by

a HiGain-2 system from the CO is 18 watts

per DS1 service.

7.05

A 9-pin (RS-232) DB-9 connector,

configured as DCE (see Figure 3), is

provided on the front panel of the HRU-612. This

provides access to the monitoring features of

HiGain-2's maintenance, provisioning and

performance monitoring interface. A very basic

interface is available via a 'dumb terminal'. Figures 7

through 13 show the menu selections that are

available from the terminal. Table 3 defines the

various terms used in the screen displays. The port

is configured as DCE with 8 data bits, 1 stop bit and

no parity. Striking the SPACE bar several times

invokes autobaud from 1200 to 9600 baud. Note

that if the RS-232 port in an HRE-421 is used to

access the HRU-612, a null modem must be used

since the HRE-421 is configured as DTE .