Corporat
e Off
ice
:
14402 F
ran
klin
Aven
ue
Tusti
n, CA 927
80
Tel:
714.8
32.99
22
FAX: 714
.8
32.99
24
For T
ech
nica
l A
ssist
ance
:
800.63
8.003
1
Produc
t Nu
mb
er: 15
0-1141-
51
HLU-
388
List 5A Li
ne Un
it
Quic
k
Ins
ta
llatio
n G
uid
e
HG
I
AIN
5A
FCC Class A
Compliance
Th
is e
quipmen
t ha
s be
en
test
ed
an
d f
ound to co
mp
ly with the limit
s for
a C
las
s A
digita
l devic
e, purs
uan
t to
Part
15 of the FC
C R
ule
s.
Th
ese lim
its ar
e designed
to
pr
ovide reas
onable pr
otection against har
mfu
l
in
ter
fer
ence wh
en
th
e equipm
en
t i
s oper
ate
d in
a com
mer
cial
en
viro
nm
ent.
Th
is
equipm
ent gener
ate
s, us
es,
and can radi
ate r
adi
o fr
equ
en
cy
energy and
, i
f not
in
stal
led and
used
in
accord
ance with
th
e in
str
uct
ion
manual
,
may c
aus
e h
arm
fu
l in
terf
ere
nce
to radio c
omm
unica
tions.
Opera
tion of this
equi
pmen
t in a re
side
ntial a
rea
is
lik
ely t
o caus
e har
mfu
l i
nte
rfer
ence in
whi
ch
case
th
e user
wi
ll
be r
equi
red t
o cor
rect
th
e in
ter
fer
ence at
his
own ex
pense.
Limited Wa
rra
nty
PairGain
Technologi
es war
rant
s this
product to be
free
of def
ects and to be
fu
lly functi
onal fo
r a
period of
60 months f
ro
m th
e date of
orig
inal sh
ip
ment, gi
ven cor
rect
custom
er ins
tallation and r
egular
main
tenance.
Pair
Gain will re
pair
or repl
ace
at Pa
irGa
in’s option
an
y un
it without c
ost
during thi
s pe
riod if the
unit is
found
to be def
ecti
ve
fo
r any
re
ason other
than abus
e or
in
co
rrect us
e or
installati
on.
Do n
ot
try to re
pair the
unit. I
f it fa
ils,
rep
lac
e it with a
nother
unit
and re
turn the
fa
ulty unit to Pair
Gain
fo
r
repair
. Any modif
ications
o
f the
unit
by
anyon
e other
th
an
an a
uthor
ized Pair
Gain repr
esentative voids
the
warra
nty.
If a
unit
nee
ds
repa
ir, c
all
PairGa
in
fo
r a
Re
turn
Ma
teri
al Auth
oriza
tion (
RM
A) nu
mber
and r
eturn
the de
fec
tive
unit, f
reigh
t pr
epaid, along
with
a br
ief des
cri
ption
of the pr
oblem.
PairGain
continues
to r
epair
fa
ulty modules
beyond the warr
anty pr
ogram at a
nominal
charge.
Contact your
Pair
Gain s
ale
s r
ep
res
en
tat
ive
fo
r de
tails
an
d pr
icing.
Modific
ati
ons
Any changes o
r modi
fication
s made to t
his
d
ev
ice
th
at are not expr
essl
y approv
ed
by PairG
ain
Technolo
gies
,
In
c. m
ay
void th
e us
er's
war
rant
y.
All wiri
ng ex
ter
nal
to
th
e pr
oducts
should
follow
the p
rovis
ions
of
the c
urr
en
t e
ditio
n of th
e Na
tional
Ele
ctric
al
Code.
Sta
ndard
s Complia
nce
Th
e HL
U-388
Lis
t 5A
has been
tested
and ver
ifi
ed to comp
ly with
the applica
ble s
ections o
f t
he f
ollowin
g
stan
dard
s.
GR 63-
CO
RE
- Networ
k Equipment
-B
uild
ing System (
NE
BS
) R
equir
em
ent
s:
Phys
ical Pr
otection
GR 1089-
CORE -
E
lec
trom
agnet
ic Com
pat
ib
ili
ty
and E
lect
rical
S
afe
ty
Trad
em
ark In
fo
rm
atio
n
PairGain
and HiGain are r
egis
ter
ed trad
emar
ks of
P
air
Gain Techno
logies,
Inc.
Al
l ot
her pr
oduct names
mentioned
in thi
s ins
tallatio
n gui
de ar
e used
fo
r identif
ication purp
ose
s o
nly a
nd
may be tr
ademarks
or
regi
ster
ed tr
ad
em
arks of
th
eir
respec
tive com
pani
es.
Copyri
gh
t In
form
ati
on
© Co
pyrig
ht 19
99 P
air
Gain Techn
ologies
, I
nc.
In
fo
rm
ation c
ontained in
th
is docum
ent is
company priv
ate to Pair
Gain Technolo
gies
, I
nc.
, a
nd
sh
all not be
modifi
ed, us
ed, copied,
re
produ
ced
or dis
clos
ed i
n who
le or
in par
t wit
hout the w
ritt
en
cons
ent of
Pair
Gain
.
T
HE
HLU-388 L
IST
5A
The PairGain
®
HiGain
®
Line Unit HLU-388 List 5A is the Central Office (CO) side
of a repeaterless, T1 transmission system. When used in conjunction with a HiGain
Remote Unit (HRU), the system provides 1.544 Mbps transmission on two
unconditioned copper pairs over the full Carrier Service Area (CSA) range. The CSA
includes loops up to 12,000 feet of 24 (American Wire Gauge) AWG or 9,000 feet of
26 AWG wire, including bridged taps. This line unit can be used in applications with
or without HiGain Doubler Units (HDUs).
F
EATURES
S
PECIFICATIONS
•
Front panel status LED, four-character status
display
•
Payload (PL) or HiGain (HG) loopback source
identification
•
Ultra-low wander
•
Reduced power consumption
•
Five-span range with four doublers
(60 kft, 24 AWG)
•
Low line-power option (-140 Vdc) for circuits
with a single doubler
•
Selectable power feed modes
•
Bit Error Rate (BER) alarm options
•
Loss of Signal (LOS)/Alarm Indicator Signal
(AIS) payload alarm option
•
Bipolar Violation Transparency (BPVT)
options
•
Additional screens for inventory and
troubleshooting
•
Grounded loop detection
Operating Temperature
-40 °F to 149 °F (-40 °C to +65°C)
Operating Humidity
5% to 95% non-condensing
HDSL Span Voltage
-140 or ±112 Vdc
Mounting
DDM+ high-density shelf
HDSL Line Code
784 kbps 2B1Q
HDSL Output
+13.5 dBm ±0.5 dB, 135
Ω
Maximum Provisioning Loss
35 dB at 196 kHz, 135
Ω
DS1 Line Rate
1.544 Mbps ±200 bps
DS1 Line Format
Alternate Mark Inversion (AMI), Bipolar with
8-Zero Substitution (B8ZS), or Zero Byte Time
Slot Interchange (ZBTSI)
DS1 Frame Format
Extended SuperFrame (ESF), SuperFrame (SF),
or Unframed (UNFR)
DSX-1 Pulse Output
6 V
pk-pk
, pre-equalized for 0 to 655 feet of ABAM
cable
DSX-1 Input Level
+1.5 to -7.5 dB DSX
I
NSTALLATION
To ensure proper installation of the HLU-388 List 5A:
1
Lift up the entire front panel and align the HLU-388 List 5A with the shelf rails.
2
Slide the unit in and press the front panel down to secure.
P
OWER
-
UP
S
EQUENCE
When the HLU powers up, the four-character display illuminates and reports status
messages.
If the HLU is not communicating with the next span device, the following occurs:
1
Alarm and diagnostic messages display (see the Front Panel Alarm Messages and
Front Panel Diagnostic Messages tables inside), followed by the SELF TEST
message.
2
The Status LED turns yellow, indicating it has entered self-test mode.
If the HLU is communicating with the next span device, the following occurs:
1
The Status LED flashes red while acquiring each device in the system, and turns
a steady green when the entire system is operating without any alarms.
2
The four-character display reports margin (signal-to-noise ratio) readings and
insertion loss.
3
If the status LED is not solid green, the display reports alarm conditions (see the
Front Panel Alarm Messages table inside).
P
ROVISIONING
1
Access the Maintenance Terminal screens by pressing
several times.
a
Set the date and time (select Set Clock from the Main Menu).
b
Set the circuit IDs (select View System Inventory).
2
Access the Systems Settings selection on the Main Menu to change the default
settings of any system parameters.
3
Access the View Troubleshooting screen to view a graphical analysis of any
potential system problems.
4
When the HLU is successfully installed and provisioned, clear Span Status,
Performance Data, Performance History, and Alarm History screens to ensure
accurate data and alarm reporting.
Continued
SPACEBAR
Þ
Sectio
n Nu
mb
er: 350
-388
-151
-02
Dec
em
ber 7,
1999
