ADC HiGain H2TU-C-231 List 3E Quick Installation page 2

Card-Edge Connector
Tip 26
27
Ring
HDSL2 Span
28
29
30
31
32
Fuse alarm*
33
34
35
36
37
KEY
38
-48Vdc
39
40
41
DSX-1 Tip 42
In
Ring
43
Ground
44
45
Management bus
46
47
48
49
Tip 1
DSX-1
Ring 1
Out 50
L T
OOPBACK ESTING
Initiate loopback testing from the maintenance screen or use the MODE and SEL
pushbuttons. The inband codes below can also be sent by a test set.
H2TU-C
DSX-1
1111110
NLOC CREM
1111000
Network
* When enabled, TLOS is an automatic loopback
that occurs with an LOS at the remote DS1 input.
GNLB Loopback Commands
Loopback Inband Code Description
NLOC 1111000 DSX-1 signal is looped back to the network at the H2TU-C.
NREM 1110000 DSX-1 signal is looped back to the network at the H2TU-R.
SMJK 11000 DSX-1 signal is looped back to the network at the H2TU-R
SmartJack module.
CREM 1111110 DS1 signal from customer is looped back to the customer
at the H2TU-C.
CLOC 1111100 DS1 signal from customer is looped back to the customer
at the H2TU-R.
Loopdown 11100 Deactivates any of the above loopbacks.
For more information about the maintenance screens, refer to the H2TU-C-231 List 3E
technical practice, document number LTPH-TP-1004-xx. Contact Customer Service to
obtain a copy of the practice.
Front-Panel Alarm Messages
Message Description
(b)
PWR FEED SHRT A short between the Tip and Ring of the HDSL2 pair.
(b)
PWR FEED GND The HDSL2 loop is grounded.
(b)
PWR FEED OPEN A line-power open condition.
SPNn-LOSW The HDSL2 loop has lost synchronization. The span closest to the network has highest
priority.
LLOS No signal is detected at the DSX-1 input to the H2TU-C.
RLOS No signal is detected at the DS1 input to the H2TU-R.
(c)
LAIS Local Alarm Indication Signal.
RAIS (c) Remote Alarm Indication Signal.
(c)
TRCI An RAI alarm (yellow LED) from the CPE with an error-free signal from the line unit or
network.
(c)
RRAI An RAI alarm (yellow LED) from the Customer Premises Equipment (CPE) with errors
from the line unit or network.
(c)
xxx-DBER A system DS1 Bit Error Rate (BER) alarm. (xxx denotes either TUC or TUR.)
(c)
PRMF H2TU-R Performance Report Messaging BER threshold exceeded at far end.
(c)
PRMN H2TU-R Performance Report Messaging BER threshold exceeded at near end.
xxx-HBER A system HDSL2 Block Error Rate (BER) alarm. (xxx denotes either TUC or TUR.)
xxx-MAL The margin on the HDSL2 loop has dropped below the threshold setting. (xxx denotes
either TUC or TUR.)
xxx-LA The attenuation on the HDSL2 loop has exceeded the maximum threshold value. (xxx
denotes either TUC or TUR.)
(a) Front-panel alarm messages are listed in order of priority. ALRM displays prior to any alarm message.
Pressing the SEL button initiates an Alarm Cutoff (ACO) message.
(b) Message displays repeatedly as long as the alarm condition exists and is not included in the priority order.
(c) Does not activate the alarm relay access pins 20 and 21.
To comply with the intrabuilding wiring requirements of
GR-1089 CORE, Section 4.5.9, the shields of the ABAM-type
cables that connect the H2TU-C-231 List 3E DSX-1 output ports
to the cross-connect panel must be grounded at both ends.
1
2
3
4
5
Status LED reports the following conditions:
6
7 Green LED
8 Red LED
Flashing Red LED
9
10
Yellow LED
11
12
Flashing Yellow LED
KEY
13
Off
14
15
16
17 Ground
18
19
20
Alarms**
21
22
23 Factory use only
24
* Fuse alarm is normally floating and at -48 Vdc when activated.
25
** System minor alarm contacts (pins 20 and 21) are normally open;
they close upon alarm.
H2TU-R
DS1
TLOS*
NREM
CLOC
1111100
1110000
11000
SMJK
Customer
Premises
(a)
Four-character display
Displays status, provisioning, and
alarm messages. See tables below
for a list of message descriptions. H
D
S
L
2
Status LED
Normal operation.
H
2
Fuse alarm.
T
HDSL2 acquisition or
U
•
system alarm.
C
A Customer Remote (CREM)
2
or Network Local (NLOC)
3
loopback is in effect. 1
System is in Armed (ARM)
mode.
Line power is off.
List number
Display Code
A=xx
ACQ
AnL
ARM
BAD RT?
FERR
FLDL
HES
LBPV
M=xx
MNGD
PWR FEED OFF
PWR FEED ON
SIG
SnL
Front-Panel Configuration Options Using MODE and SEL
Display Code Description (default values in bold)
EQL Sets the DSX-1 Equalizer to: EXT (replaces the internal equalizer with an external
equalizer), 0 (0 to 132 ft.), 133 (133 to 265 ft.), 266 (266 to 398 ft.), 399 (399 to 532 ft.),
533 (533 to 655 ft.).
RLBO Sets the H2TU-R line buildout to 0 dB, -7.5 dB, or 15 dB.
LPBK Enables (ENA) or disables (DIS) SmartJack loopback commands.
FT1 Enables (ENA) or disables (DIS) system response to DDS latching loopback commands
for fractional T1 applications.
SPLB xxxx Configures system for generic (GNLB) or special inband loopback commands (A2LB, A3LB, A4LB).
PWRF OFF = disables HDSL2 powering; ON = HDSL2 line voltage is -185 Vdc maximum.
HBER 1E-6 or 1E-7 = alarm activates when the HDSL2 BER alarm threshold exceeds 10
NONE = prevents generation of a system alarm due to BER.
DBER Enables (ENA) or disables (DIS) fixed 24-hour DSX-1 BER alarm threshold.
LBTO Loopback timeout = NONE, 20, 60, 120 minutes.
ALM Enables (ENA) or disables (DIS) alarm indications on pins 20 and 21.
DS1 DSX-1 line code = B8ZS, AMI.
CONV H2TU-R frame format conversion = OFF (framing determined by the DS1 FRMG option),
ACON (autodetection of framing and potential frame conversion at the H2TU-R), or FCON
(autodetection of framing and forced frame format conversion at the H2TU-R).
FRMG DS1 frame formatting = AUTO (auto framing mode) or UNFR (unframed mode).
ALMP Enables system to output an alarm pattern: AIS or LOS.
BPVT Enables (ENA) or disables (DIS) Bipolar Violation Transparency.
NLBP Enables the H2TU-R to transmit either AIS or LOS towards CI for any network loopback.
TLOS Enables (ENA) or disables (DIS) a logic loopback at the H2TU-R when an LOS occurs at its
DS1 input.
RTPV Enables (ENA) or disables (DIS) remote provisioning.
PRM OFF = no enhanced Performance Report Messaging; SPRM = Supplemental PRM;
NPRM = Network PRM; S + N = SPRM + NPRM.
NAIS If ALMP is set to AIS, this option specifies which pattern is sent to the network when a
remote LOS or AIS occurs. CI = AIS-CI sent to the network; AIS = AIS sent to the network.
ROVR Enables (ENA) or disables (DIS) conversion of an ESF DS1 payload from the network with
an embedded RAI pattern to an SF-RAI pattern towards the CI at the H2TU-R. CONV
option must be set to FCON or ACON.
RACI Enables (ENA) or disables (DIS) conversion of a DS1 SF-RAI signal received by the H2TU-R
to an SF-RAI-CI signal towards the network.
Front-Panel System Information Messages (Scroll Mode)
Code
CODE xxxx
FRM xxxx
LATT xx
(a) To scroll through system information messages, press the MODE button for 3 or more seconds.
MODE and SEL pushbuttons (for manual
setting of system parameters)
HiGain
Use MODE and SEL to manually modify user options,
HDSL2
initiate loopbacks, and display DSX-1 line parameters.
1 Press the MODE button for 1 second and release.
The front panel alternately displays the first
system parameter and its current setting.
MODE SEL
2 Press SEL to step through all possible settings for
SETUP
the displayed parameter.
STATUS
3 Press MODE to update the parameter and advance
to the next parameter.
BRG
IN
4 After scrolling through all the parameters, press SEL
LINE
to confirm changes when prompted with a CONF NO
message, or press MODE to cancel all changes.
BRG
DSX-1 test access jacks
OUT
LINE
Connect standard test equipment.
BRG Provides non-intrusive bridging jack
access to (IN) and from (OUT) the
HDSL2 span at the DSX-1 interface.
R
Allows monitoring of the DS1 payloads.
S
2
3
Provides splitting jack access to
LINE
2
(IN) and from (OUT) the HDSL2 span
at the DSX-1 interface.
DCE
Craft port provisioning
L 3E
To access all system maintenance, provisioning,
and performance screens, connect a standard
9-pin terminal cable between the serial port on a PC
and the H2TU-C craft port.
Maintenance Terminal Modem Settings
9600 baud
8 data bits
No parity
1 stop bit
Hardware flow control: OFF
Terminal emulation software: VT100
Front-Panel Diagnostic Messages
Description (normal operating messages in bold)
The loop attenuation of the longest (maximum loss) span, measured in dB.
The multiplexers of the H2TU-C-231 and H2TU-R are trying to establish synchronization.
The multiplexers of the two devices on Span n are trying to establish synchronization with
each other, where n is the number of the span.
Armed to respond to Intelligent Repeater Loop (ILR) codes.
The H2TU-C is not receiving a response from the H2TU-R.
A framing bit error occurred at H2TU-C DSX-1 input.
Flash download of firmware updates. (Contact Customer Service for update procedures.)
H2TU-C HDSL2 loop cyclical redundancy check (CRC) error.
A local bipolar violation has been received at the DSX-1 input to the H2TU-C.
Indicates the power of the received HDSL2 signal relative to noise (S/N with respect to
21.5 dB). Any value of 6 dB or greater is adequate for reliable system operation.
The H2TU-C is under control of the HMU-319 network management unit.
HDSL2 span power is turned off.
Indicates that the HDSL2 loop is not grounded or shorted.
The transceivers of the H2TU-C and H2TU-R are trying to establish contact with each
other on Span 1 of the HDSL2 loop.
The transceivers of the two devices on Span n are trying to establish contact with each
other, where n is the number of the span.
Description Code
Line code setting (AMI or B8ZS). LIST xx
Frame pattern received from the MARG xx
DSX-1 (SF, ESF, UNFR).
Loop attenuation (0 to 40 dB). VER x.xx
Default is 32.
-6 -7
or 10 .
(a)
Description
List number of the H2TU-C-231.
Margin threshold (0 to 15 dB).
Default is 5.
Software version number.