CopperOptics 150-1218-02, Manual

Page: 4 / 19

Section 150-612-100
Revision 02
Page 4
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: (800) 638-0031
(714) 832-9922
Fax: (714) 832-9924
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.
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
gen5, -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 .