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 61223004L4-5) available online at
.
©2014 ADTRAN, Inc.
All Rights Reserved.
HDSL2
3192 H2TU-C
P/N: 1223004L4
CLEI: T1I3AEYE_ _
HDSL2
3192 H2TU-C
ON-BOARD OPTIONS
The following options can be accessed on the circuit board:
Line Build Out (LBO) Switches
Use the DIP switch
SW5
to select a distance of: 0-133 (default),
133-266, 266-399, or 399-533 feet.
Card Edge Pinouts
* The HDSL2 Loop is full duplex, capable of simultaneously sending and receiving data.
FRONT PANEL OPTIONS
The following options can be accessed on the front panel:
Pushbuttons
LBK
To perform loopback functions, use the following methods:
To release the active loopback, press the
LBK
pushbutton until the
ARM/LBK
LED extinguishes.
LINE CODE
Press this button to provision for AMI or B8ZS (default) line coding. A Green
B8ZS
LED
indicates B8ZS line code.
DSX EQ Splitting Jacks
TX
DSX-1 transmit toward the local loop (intrusive)
RX
DSX-1 receive from the local loop (intrusive)
DSX Monitor Jacks
TX
DSX-1 transmit toward the local loop (nonintrusive)
RX
DSX-1 receive from the local loop (nonintrusive)
RS-232 DB-9 Connector
Used to access performance monitoring data, perform loopbacks, and provision units via VT100 emulation
applications, such as HyperTerminal. There are two terminal emulation modes:
Manual Update
and
Real-Time
Update
.
CTRL+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 Update Mode
: The default mode. Print screen and log file commands not available. Cursor
placement and screen highlighting are enabled.
Provision terminal port for VT100:
Data Rate = 1.2 to 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.
Pin #
Function
Pin #
Function
1
R TX DSX (In from DSX)
A
T TX DSX (In from DSX)
2
R1 RX DSX (Out to DSX)
B
T1 RX DSX (Out to DSX)
5
GND
H
DCV LOS (to Alarm Module)
8
–48 V
J
Frame Ground
9
R HDSL2 Loop*
K
T HDSL2 Loop*
10
Fuse Alarm (to Alarm Module)
To Loop Up:
Press and Hold LBK Button:
ARM/LBK LED Shows:
H2TU-C
Less than 3 seconds
Green
H2TU-R
More than 3 seconds
Flashing Green
To Loop Down:
Press and Hold LBK Button:
ARM/LBK LED Shows:
H2TU-C
Less than 3 seconds
Off
H2TU-R
Less than 3 seconds
Off
LED STATUS
COMPLIANCE
This product is intended for installation in restricted access locations only.
WARNING:
Up to –200 VDC may be present on
telecommunications wiring.
CAUTION:
The DSX-1 interface is intended for
connection to intra-building wiring
only. Ensure Chassis ground is
properly connected.
This product provides span powering voltage (negative only with respect to ground, –190 VDC nominal, GFI
protection < 5 mA) and meets all requirements of Bellcore GR-1089-CORE (Class A2), ANSI T1.418-2002.
This product is NRTL listed to the applicable UL standards.
HDSL2 LOOP GUIDELINES FOR OPTIMUM OPERATION
Cable pairs
must
be non-loaded
No single Bridged Tap > 2 kft.; Total Bridged Tap < 2.5 kft.
Loop Resistance:
Attenuation:
30 dB
Impulse noise < 52 dBrnF (F filter)
Wideband noise < 47 dBrnF (F filter)
Margin
6 dB
Longitudinal Noise (Power Influence):
80 dBrnC:
acceptable
80-90 dBrnC: marginal
> 90 dBrnC:
unacceptable
Label Indications
Description
STAT
4
Off
Green Flashing
Green
Indicates a loss of power or blown fuse has occurred
Attempting to acquire HDSL2 synchronization with the H2TU-R
Normal operation; HDSL2 synchronization is achieved with the H2TU-R
DLOS
Off
Red
DSX-1 signal is present and synchronized with no errors
No DSX-1 signal, or signal is present with errors
RLOS
Off
Red
DS1 signal from CPE is present at H2TU-R with no errors
No DS1 signal from CPE at H2TU-R, or present with errors
HLOS
4
Off
Red
Red Flashing
Normal Operation; end-to-end HDSL2 synchronization good
Loss of end-to-end HDSL2 synchronization on the 2-wire Loop
GFI or overcurrent condition detected
DSL
Off
Green
Yellow
Red
Flashing
HDSL2 synchronization has not been achieved on the 2-wire Loop
Normal operation; signal margin is optimum (
6 dB) on the 2-wire Loop
Marginal operation; signal margin is 1-5 dB on the 2-wire Loop
Margin
dB; severely impaired HDSL2 operation
If attenuation (LOSS on Current System Status Screen) is
30 dB the
DSL
LED remains
solid. If attenuation is > 30 dB, the
DSL
LED flashes green, yellow, or red as determined by
the signal quality
HCRC
4
Off
Yellow Flashing
Yellow
Normal operation; No HDSL2 CRC errors detected by this unit within the last 30 minutes
on the 2-wire Loop
One or more HDSL2 CRC errors are being detected by this unit on the 2-wire Loop
Four or more HDSL2 CRC errors have been detected on the 2-wire Loop within the last 30
minutes. The LED remains lit for 30 minutes. If no HDSL2 CRC errors occur within a
rolling 30 minute interval, the LED extinguishes.
ARM/
LBK
4
Off
Yellow
Green
Green Flashing
Unit is not in the armed or loopback state
Unit is an armed state
A loopback is active on this specific unit
A loopback is active on the H2TU-R
B8ZS
Off
Green
Unit is receiving AMI line code
Unit is receiving B8ZS line code
Configuration Code
Input
Output
Power Code
F
C
Telecommunication Code (TC)
–
X
Installation Code (IC)
A
–
O
N
1
O
N
1
3
3
O
N
1
3
ON
DSX-1 LBO
0
133
266
ON
ON
ON
ON
ON
OFF
ON
OFF
ON
399
533
ON
OFF
OFF
ON
OFF
ON
2
2
2
1223004L4
STAT
TX
RX
TX
RX
DSX MON
DSX EQ
DLOS
RLOS
HLOS
DSL
HCRC
ARM
/LBK
(Y)
(G)
B8ZS
LINE
CODE
LBK
*
612230
04L4-2
2G*
Issue Date: January 2014
Document P/N: 61223004L4-22G
