C A U T I O N !
SUBJECT TO ELECTROSTATIC DAMAGE
OR DECREASE IN RELIABILITY.
HANDLING PRECAUTIONS REQUIRED.
For more information, refer to the Installation and Maintenance Practice (P/N 61247024L1-5) available online at
.
©2008 ADTRAN, Inc.
All Rights Reserved.
HDSL
T200 HTU-R LP
P/N: 1247024L1
CLEI: T1I3AAUA _ _
*61247
024L1-
22B*
FRONT PANEL PUSHBUTTONS
LOC LBK:
Press the
LOC LBK
pushbutton to initiate a bi-directional loopback of
the HTU-R towards the network and customer.
REM LBK:
Press the
REM LBK
pushbutton to initiate a loopback to the HTU-C
from the HTU-R.
BANTAM JACK ACCESS
MON:
Monitoring Jacks provide a
nonintrusive
test access point to the data
stream as follows:
TX:
Monitors the data stream being received from the network.
RX:
Monitors the data stream being transmitted to the network.
RS-232 DB-9 CONNECTOR
Used to access performance monitoring data, perform loopbacks, and provision units
via VT 100 emulation applications, such as HyperTerminal-Private Edition. There
are two terminal emulation modes: Manual Updates and Real-Time Update.
C
TRL
+T
toggles between modes.
Manual Update Mode:
Press the spacebar three times to manually update the
screen. Print screen and log files commands are available in this mode.
Real-Time Mode:
The default mode. Print screen and log file commands not
available. Cursor placement and screen highlighting are enabled.
Terminal Port
Provision terminal port for VT100 as follows:
♦
Data Rate = 9.6 kbps, 19.2 kbps
♦
Asynchronous Data Format
♦
Eight data bits
♦
No parity (none)
♦
One stop bit
When using a PC with terminal emulation software, be sure to disable any power
saving programs.
OPTION JUMPER
P3 sets the DS1 NIU 60 mA Current Setting as follows:
♦
Off disables the 60 mA constant current source for the DS1 NIU.
♦
On enables the 60 mA constant current source for the DS1 NIU.
POWER REQUIREMENTS
The T200 HTU-R LP is locally powered via
–
48 V.
COMPLIANCE
Refer to the
HDSL T200 HTU-R, Local Powered, 60 mA Compliance Notice
(P/N 61247024L1-17) for detailed compliance information.
FRONT PANEL LEDS
HDSL DEPLOYMENT GUIDELINES
♦
Cable pairs must be non-loaded
♦
Total bridged tap < 2.5 kft
♦
No single bridged tap > 2 kft
♦
196 kHz insertion loss < 35 dB
♦
Pulse attenuation (loss on HDSL current system status screen) 30 dB
♦
Maximum loop resistance is 800
Ω
♦
Impulse noises < 50 dBm as measured using a 50 kHz filter
♦
Wideband noise
≤
31 dBm as Measured using a 50 kHz filter
Label Status
Description
DSL 1/
DSL 2
{
z
z
z
5
Off
Green
Yellow
Red
Flashing
No sync between the HTU-C and HTU-R on loop 1/loop 2
Good signal quality on (4 to 9)
Marginal signal quality on (1 to 3)
Poor signal quality on (0)
Error detected on either end of loop 1/loop 2,
LED color represents loop signal quality, as shown above
DS1
{
z
5
Off
Green
Flashing
DS1 signal is absent or is of a format that does not match the
provisioning of the HDSL circuit
DS1 signal is present and synchronized with the HTU-C
interface
Bipolar violation (BPV), frame bit error (SF mode) or CRC
error (ESF mode) detected
ALM
{
z
z
Off
Yellow
Red
No alarm conditions exist
Remote alarm condition detected (HTU-C)
Local alarm condition (HTU-R) detected
ESF/
SF
{
z
z
Off
Green
Yellow
Unframed mode
Unit is receiving SF data
Unit is receiving ESF data
B8ZS/
AMI
z
z
Green
Yellow
T200 HTU-R LP is provisioned for AMI line coding
T200 HTU-R LP is provisioned for B8ZS line coding
LLB/
RLB
{
z
z
2
Off
Green
Yellow
Yellow Flashing
Not in loopback or armed state
Active remote bidirectional loopback from the HTU-C toward
the customer and the network
Active local bidirectional loopback from the HTU-R toward
the customer and the network
Unit armed but not in a active loopback
61247024L1-22B
0807
HDSL
T200 HTU-R, Local Powered, 60 mA
