ADTRAN AHT1U Maintenance and service guide

1Section 61245002L6-5, Issue 261245002L6-5C
Section 61245002L6-5C
Issue 3, February 2001
CLEI Code # SLL110XHAA
ADTRAN AHT1U
LOW VOLTAGE ASYNCHRONOUS HTU-C LINE CARD
FOR DSC COMMUNICATIONS CORPORATION
LITESPAN®CHANNEL BANK ASSEMBLIES
INSTALLATION/MAINTENANCE
CONTENTS
1. GENERAL ............................................................................ 1
2. APPLICATIONS .................................................................. 3
3. INSTALLATION.................................................................. 4
4. CONTROL PORT OPERATION......................................... 6
5. ALARMS ............................................................................ 13
6. HDSL DEPLOYMENT GUIDELINES ............................. 16
7. TROUBLESHOOTING PROCEDURES .......................... 17
8. MAINTENANCE ............................................................... 17
9. PRODUCT SPECIFICATIONS ......................................... 17
10. WARRANTY AND CUSTOMER SERVICE ................... 18
Appendix A. HDSL LOOPBACKS ......................................... A-1
FIGURES
Figure 1. ADTRAN AHT1U.................................................. 1
Figure 2. HTU-C Span Powering Diagram ........................... 3
Figure 3. Deployments from a Litespan Channel Bank
Assembly ................................................................ 3
Figure 4. HTU-C Card Edge Connections............................. 4
Figure 5. RS232 (DB9) Connector ........................................ 6
Figure 6. HDSL Main Menu Screen ...................................... 9
Figure 7. Current System Status, HRE Dual Loop Screen ... 9
Figure 8. Current System Status, Dual Loop Screen........... 10
Figure 9. HRE Performance History, Dual Loop Screen .... 10
Figure 10. Performance History, Dual Loop Screen ............. 11
Figure 11. ADTRAN Information, Dual Loop Screen .......... 11
Figure 12. Loopback Options, Dual Loop Screen ................. 12
Figure 13. Provisioning Screen .............................................. 12
Figure 14. Troubleshooting, Dual Loop Screen .................... 13
Figure 15. HDSL Deployment Guidelines ............................ 15
Figure A-1. HDSL Loopback Points...................................... A-1
Figure A-2. Element State Diagram ....................................... A-1
TABLES
Table A. Screen Abbreviations ................................................. 6
Table B. Provisioning Options ............................................... 14
Table C. LED Alarms ............................................................. 15
Table D. TL1 Alarm Conditions............................................. 15
Table E. HDSL Loss Values .................................................. 16
Table F. Loop Insertion Loss Data ........................................ 17
Table G. Worksheet PW-1 Replacements .............................. 17
Table H. Power Parameters for Replacements to
Worksheet PW-1 ...................................................... 17
Table I. Troubleshooting Guide ............................................ 18
Table J. ADTRAN AHT1U Specifications........................... 19
Table A-1. HDSL Loopback Control Codes ........................... A-2
Trademarks: Any brand names and product names included in this document are
trademarks, registered trademarks, or trade names of their respective holders.
1. GENERAL
The ADTRAN Low Voltage asynchronous Litespan
HDSL Transceiver Unit for the Central Office
(HTU-C) list 6, is a DS1 interface unit that provides
full T1 service over 4-wire interface facilities. The
Low Voltage Litespan HTU-Cs combine ADTRAN
HDSL technology and DSC Litespan technology to
provide an HDSL interface to a Litespan system.
ADTRAN’s Low Voltage Litespan HTU-C is
certified by DSC to safely operate in Litespan 2000
and Starspan systems. The unit is licensed under the
Asynchronous High-bit-rate Digital Subscriber Line
TI Interface Unit (AHT1U) channel unit type.
Figure␣ 1 is an illustration of the ADTRAN AHT1U.
Figure 1. ADTRAN AHT1U
HTU-C
1245002L6
AHT1U
R
S
2
3
2
LOOP
FAIL
HDSL
LP1 LP2

2Section 61245002L6-5, Issue 3 61245002L6-5C
Features
• RS-232 maintenance port
• Lightning and power cross-protection, static discharge
immunity, and local power bus fusing for line card
safety and protection
• 784␣ kbps dual duplex 2B1Q HDSL transmission over
two wire pairs
• Front panel status LED
• Performance monitoring and alarm reporting
• Low power consumption
• -135 volt span powering capability of the Low
Voltage HRE and HTU-R
• Corrosion-preventive sealing current over both
twisted copper pairs
• Troubleshooting functionality
Asynchronous counterparts to the Litespan HTU-C
(AHT1U) are the asynchronous DSX-1 interface unit
(ADS1U) and the asynchronous T1 interface unit
(AT1U). ADTRAN provides the AHT1U
(P/N␣ 1245002L6) for connection to narrowband and
wideband service pairs.
The List 6 provides the most flexibility for
installations where the narrowband/wideband service
connection is not known. It also provides flexibility
of switching between narrowband and wideband
services without needing a different HTU-C.
CAUTION
If the List 6 is used in applications where
narrowband and wideband copper service
wirepairsareconnectedsimultaneously,only
one service pair may have terminating
equipment connected to the HTU-C. Also,
copper service wire pairs not in use are
considered as bridge taps to the HDSL loops
in service and should be entered into the
deployment calculations listed in subsection
6ofthispractice. Ifthebridgedtapspresented
bytheunusedloopviolatestheCSAguidelines,
the unused pair should be disconnected.
Each ADTRAN Litespan HTU-C line card provides a
1.544␣ Mbps data transport over two unconditioned
CSA copper pairs that are in accordance with
TA-NWT-001210. These CSA loops can range up to
12␣ kft of 24-AWG twisted pair wire. All comply with
Bellcore GR1089-CORE, UL1459, FCC Class A
subpart␣ J, and DSC requirements for a generic
subscriber interface unit.
The Litespan HTU-C can be used in Litespan 2000,
Litespan 2012, and Litespan ONU channel bank
assembly (CBA) systems containing Litespan system
software versions of 7.1.3 or higher. Each HTU-C
works with the following multiple list versions of the
HDSL unit remote end (HTU-R), and HDSL Range
Extender (HRE):
• 1245024L1, Low Voltage T400 HTU-R
• 1245021L1, Low Voltage HTU-R T200 circuit pack
• 1245026L1 - L7, Low Voltage HTU-R T200, DB9
• 1244021L1, Low Voltage HTU-R T400 circuit pack
• 1244022L1, Low Voltage HTU-R standalone
• 1244041LX, Low Voltage T400 HRE
• 1244042L1, Low Voltage 819A HRE
• 1244044L1, Low Voltage 439 HRE
The HTU-C can be deployed in circuits consisting of one
HTU-C and one HTU-R. When deployment requires the
HRE, which doubles the service range, the HTU-C can
be deployed with one Low Voltage HRE (T400, 819A,
or 439) and one Low Voltage HTU-R.
The HDSL local loop operates as two independent
subsystems, each operating over a single twisted pair.
The HTU-C communicates over these two twisted
pairs to the HTU-R. Each subsystem carries half of
the total bandwidth along with a small amount of
overhead used for maintenance and performance
monitoring.
Lightning and power cross-protection is provided at
each twisted pair interface of the ADTRAN HTU-C
line card. Local power bus fusing is also used to
protect the Litespan channel bank backplane, Litespan
bank power supplies, and neighboring Litespan line
cards in the event of catastrophic line card failure.
The Litespan HTU-C uses a DC-to-DC converter to
derive span powering voltage from the Litespan
-48␣ VDC switched battery supply. The Litespan
HTU-C can span power HREs and HTU-Rs as listed
above.
Simplex current of 30 to 155 mA of current may be
coupled onto the HDSL loop span to power the
HTU-R and HRE when deployed (see Figure 2). Span
powering voltages meet all requirements of Class A2
voltages as specified by Bellcore GR-1089-CORE.
Revision History
This practice has been reissued to incorporate new
wording in the features subsection.

3Section 61245002L6-5, Issue 361245002L6-5C
Figure 2. HTU-C Span Powering Diagram
2B1Q
HDSL
SPAN POWER
REGULATOR SPAN CURRENT
T (3, 71)
R (4, 72)
T1 (5, 73)
R1 (6, 74)
LOOP 1
LOOP 2
Figure 3. Deployments from a Litespan Channel Bank Assembly
Common
Control
Channel Bank
Assembly with
a Litespan
HTU-C
Installed
HDSL Unit
Remote End
HDSL Loop Pairs
Litespan 2000 or 2012 System with Litespan HTU-C deployment
Common
Control
High-Density
Fiber Bank
ONU-96 with
an installed
Litespan HTU-C
OLNK
HDT
Typical Starspan System
HDSL Unit
Remote End
HDSL Loop Pairs
2. APPLICATIONS
The ADTRAN HDSL system provides a cost-effective
alternative for deploying T1 service over metallic
cable pairs. In contrast with traditional T1 service
equipment, ADTRAN HDSL can be successfully
deployed over two unconditioned, non-loaded,
bridged-tapped copper pair CSA loops (see subsection
6 of this practice).
Litespan HDSL deployment is typically made from a
Litespan 2000, Litespan 2012, or Litespan ONU
channel bank assembly. Figure 3 shows possible
ADTRAN HDSL deployments from a Litespan
channel bank assembly.
ADTRAN HDSL systems can be deployed quickly
without the use of expensive T1 repeater equipment
on standard CSA loops while using the existing
massive copper-fed twisted line pairs in use by the
industry.
ADTRAN uses negative ground-referenced span
powering voltage (-135 VDC) on HDSL loop 2 while
loop␣ 1 remains at ground. This prevents corrosion
associated with positive ground reference voltage
while providing power for the HTU-R. HTU-R span
powering can be disabled to allow locally-powered
HTU-R applications, if desired.
If normal CSA loops need expanding beyond the
maximum range of an HTU-C/HTU-R HDSL system,
a span-powered HRE can be added to effectively
double the HDSL serving area. Addition of a
span-powered HRE still allows span powering to be
passed through to a span-powered HTU-R, providing
a totally span-powered HDSL system. However,
addition of an HRE adds to the total power
consumption from the Litespan channel bank
assembly and requires recalculation of the power
budget deployment guidelines (see subsection 6).
HRE deployment may limit total Litespan linecard
deployment.

4Section 61245002L6-5, Issue 361245002L6-5C
3. INSTALLATION
After unpacking the unit, inspect it for possible
shipping damage. Make sure the desired Litespan
HTU-C list number appears at the top of the faceplate.
If damage is discovered, file a claim immediately with
the carrier, then contact ADTRAN Customer Service
(see subsection␣ 10 of this practice).
The Litespan HTU-C plugs directly into a Litespan
channel bank assembly channel unit slot. Litespan
system software must be 7.1.3, or higher. See Figure
4 for card edge connections.
Upon insertion of an HTU-C, the FAIL LED should
turn on immediately. The FAIL LED will remain on
until the Litespan bank recognizes the insertion of the
card and downloads the AHT1U channel unit type
code into the linecard. Typically, the FAIL LED will
remain on for approximately 15 to 20 seconds (time
may vary). Approximately 3 to 4 seconds after the
FAIL LED turns off, the HDSL LED will turn on red
and remain so until the HTU-C and HTU-R units
synchronize with each other over both HDSL loops.
CAUTION
Prior to installing or removing the Low
Voltage Litespan HTU-C, make sure to
observe the following warning:
If the Low Voltage Litespan HTU-C is
removed from a linecard slot, wait at least 15
secondsbeforereinsertion Ifconnectedtothe
MTI craft interface terminal, wait until the
message "AID:MJ,UEQ.."appears (where
“AID” is the access identifier). This informs
the Litespan common control assembly that
the HTU-C has been removed from its slot,
after which the common control assembly
begins looking for the reinsertion of the
linecard. Reinsertion any earlier than this
may temporarily lock the HTU-C into a
nonfunctional state because the common
control assembly will not send the AHT1U
equipment type code to the HTU-C linecard.
Figure 4. HTU-C Card Edge Connections
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
Frame Ground
Tip 1 Narrowband
Ring 1 Narrowband
Tip 2 Narrowband
Ring 2 Narrowband
Switch Battery (-48 VDC)
Positive Relay VCC (+5 VDC)
-5 VDC
Active A side signal
Logic and 5V system ground
A-side transmit circuit clock (4.096 MHz)
A-side receive circuit clock (4.096 MHz)
Logic and 5V system ground
A-side frame sync (1 kHz)
A-side receive data channel (8.192 MHz)
A-side transmit data channel (8192 MHz)
+5VDC (precharge pin)
Surge Ground
Frame Ground
Test Bus for Loop 1 (tip)
Test Bus for Loop 1 (ring)
Test Bus for Loop 2 (tip)
Test Bus for Loop 2 (ring)
Switch Battery Return (-48 VDC return)
-5 VDC
Active B side signal
Logic and 5V system ground
B-side transmit circuit clock (4.096 MHz)
B-side receive circuit clock (4.096 MHz)
Logic and 5V system ground
B-side frame sync (1 kHz)
B-side receive data channel (8.192 MHz)
B-side transmit data channel (8.192 MHz)
+5 VDC
Frame Ground
Tip 1 Wideband
Ring 1 Wideband
Tip 2 Wideband
Ring 2 Wideband
-5 VDC
T1 clock A-side (6.176 MHz)
Logic and 5V system ground
T1 clock B-side (6.176 MHz)
T1 frame sync A-side (8 kHz)
Logic and 5V system ground
T1 frame sync B-side (8 kHz)
+5 VDC
P1, Row A P1, Row B P1, Row C

5Section 61245002L6-5, Issue 361245002L6-5C
Provisioning
The Litespan HTU-C is provisioned in two steps.
First, local HTU-C provisioning is set using the
RS-232 port. Typical T1 provisioning options are set
for the Litespan HTU-C.
Second, Litespan system provisioning through a
Litespan craft interface port allows a data
cross-connection between the Litespan HTU-C and
another linecard in the asynchronous T1 linecard class
or another Litespan HTU-C. If the cross-connected
unit is not an HTU-C, then T1 provisioning of the
cross-connected unit may be accomplished through
the Litespan craft interface port. If the
cross-connected unit is another Litespan HTU-C,
however, provisioning of the cross-connected unit
must be performed at the front panel craft interface
port.
For complete Litespan cross-connection provisioning
information, refer to TL1 software documentation
release␣ 7.1, or higher.

6Section 61245002L6-5, Issue 361245002L6-5C
4. CONTROL PORT OPERATION
The Litespan HTU-C provides a faceplate-mounted
female DB9 connector that supplies an RS232
interface for connection to a controlling terminal. The
pinout of the DB9 is illustrated in Figure 5. The
linecard must be provisioned through the control port.
Switches or jumpers are not provided.
The terminal interface operates at data rates from
1.2␣ kbps to 19.2 kbps. The asynchronous data format
is fixed at 8 data bits, no parity and 1 stop bit. The
supported terminal type is VT-100 or compatible.
NOTE
If you are using a personal computer (PC)
with terminal emulation capability, be sure
to disable any power saving programs.
Otherwise, communication between the PC
andtheHDSLunitmaybedisrupted,resulting
in misplaced characters or screen timeouts.
For abbreviations used in the screen diagrams, see
Table␣ A.
Figure 5. RS232 (DB9) Connector
6
7
8
9
1
2
3
4
5
TXD (Transmit Data)
RXD (Receive Data)
SGN (Signal Ground)
Table A. Screen Abbreviations
Abbreviation
ES .......................
SES .....................
UAS ....................
SF........................
ESF .....................
B8ZS ...................
AMI ....................
LBO ....................
BPV ....................
NIU .....................
S/N ......................
15M ....................
24H .....................
Definition
Errored seconds
DSX/DS1
SF................ Second in which a BPV or frame bit error occurs
ESF ............. Second in which a BPV or CRC error occurs
HDSL.................. Second in which a CRC error occurs
Severely errored seconds
DSX/DS1
SF................ Second in which 1544 BPVs or 8 frame bit errors occur
ESF ............. Second in which 1544 BPVs or 320 CRC errors occur
HDSL.................. Second in which a 165 CRC error occurs
Unavailable seconds
DSX/DS1............ Second in which there is a loss of signal or sync
HDSL.................. Second in which there is a loss of signal or sync
Superframe format
Extended superframe format
Bipolar with 8-zero substitution
Alternate mark inversion
Line build-out
Bipolar violation
DSX/DS1 ............ Second in which a bipolar violation occurs
T1 Network Interface Unit
Serial number
Fifteen-minute period
Twenty-four-hour period

7Section 61245002L6-5, Issue 361245002L6-5C
The screens illustrated in Figures 6 through 14 are for
an HDSL circuit deployed with ADTRAN HDSL
technology. The circuit includes an HTU-C, HTU-R
and HRE for inclusiveness of functionality. Other
configurations are possible and their displays will vary
slightly from those shown in this section.
Initiate a terminal session by entering multiple space
bar characters; the number of which will determine
the speed of the terminal. Once the speed has been
determined, an Introductory Menu will appear.
From the Introductory Menu, the Main Menu may be
selected. The Main Menu provides access to detailed
performance and configuration information, as shown
in Figure 6, HDSL Main Menu Screen.
From the Main Menu, the following screens can be
accessed:
1. Current System Status
2. Performance History
3. ADTRAN Information
4. Loopback Options
5. Provisioning
6. Troubleshooting
Current System Status
The Current System Status screens, illustrated in
Figures 7 and 8, provide quick access to status
information for both the HTU-C and HTU-R. Type
“H” to view the Current System Status screen for the
HRE, illustrated in Figure 7.
The Elapsed Time display indicates the period of time
since the unit began collecting performance
information. At each 15-minute interval, the
performance information is transferred to the
15-minute performance data register accessed from
the Performance History screen. At each 24-hour
interval, the performance data is transferred into the
24-hour performance data register also accessed using
the Performance History screen.
At the Current System Status screen, type “Z” to reset
the performance registers to zero at both the Current
System Status and Performance History screens.
Figure 8 consolidates current information for the
HDSL, DSX-1, and DS1 interfaces. A key to the
information provided is found in the center of the
screen. Arrows indicate the key applies to both the
HTU-C and HTU-R.
LOSS ................. Pulse attenuation measurement
SYNC ................ HDSL loop 1 and loop 2 sync status
ES 15M/24H ..... Errored seconds 1
SES 15M/24H ... Severely errored seconds 1
UAS 15M/24H .. Unavailable seconds 1
An indication of pair reversal (if present) appears at
the bottom of the first key column. Status and
configuration information for the DS1 and DSX-1
signals is located in the center of the screen near the
bottom.
FRAME ...... T1 framing format selected
CODE ......... T1 line coded selected
LBO ............ Line build-out selected (for DSX-1),
Customer signal of 0 or -15 dB (for DS1)
NIU ............. Network interface unit enabled?
BPV ............ Bipolar violations detected (DSX1- and
DS1)
ES ............... Errored seconds (DSX1- and DS1)
SES ............. Severely errored seconds (DSX1- and
DS1)
UAS ............ Unavailable seconds (DSX1- and DS1)
Alarms ........ Lists current alarm condition status
A measure of signal quality for each HDSL loop is
displayed in graphic form on the bottom of the screen.
The measure is from 0 (poor signal quality) to 9
(excellent signal quality). Guidelines for interpreting
the indicators are as follows:
0 ......... Noise margin is ≤0 dB (≈10-7 BER)
1-8...... Margin measurement above 10-7 BER in dB
9 ......... Margin is ≥9 dB (excellent quality) above
10-7␣ BER
Predicting performance based upon signal quality
varies with each loop. Generally, a noise margin of 0
or higher will support a bit error rate (BER) of better
than 10-7.
1The first number is for the current 15-minute period and the second is the current 24-hour period (Loop 1 and Loop 2 numbers are
displayed).

8Section 61245002L6-5, Issue 361245002L6-5C
Performance Monitoring
The Performance History screen is shown in Figures 9
and 10. Type “H” to view the Performance History
screen for the HRE. See Figure 9 for the HRE
Performance Monitoring screen. Type “H” to select
the view number from the view location diagram
located at the lower left of the screen to see the
performance monitoring information collected at
every receiver location throughout the Low Voltage
HDSL system.
Once all performance monitoring locations have filled
up (after initial powerup), each successive
performance monitoring register update overrides the
oldest performance monitoring data. The current
performance monitoring registers are indicated by the
key at the center of the screen. Previous performance
monitoring registers are also indicated by the key at
the center of the screen. Each previous performance
monitoring register has a minus sign followed by a
number. A number “5” in the 24-hour register, for
example, represents 24-hour data from five 24-hour
periods ago. A number “2” in the 15-minute register
represents 15-minute data taken from two 15-minute
periods ago.
Loopback Options
The HDSL loopback screens are illustrated in Figure
12. Terminate or evoke loopbacks using these
screens. Refer to Appendix A for detailed HDSL
loopback information.
Control Port Provisioning
During a terminal session, type “5” from the Main
menu to view the Provisioning screen, illustrated in
Figure 13. This screen displays the current system
configuration and allows for changing this
configuration. Provisioning changes are only allowed
at the Litespan HTU-C and not at the HTU-R. The
HTU-R provisioning is set directly from the
provisioning information entered at the HTU-C. The
HTU-C stores its provisioning information in an
EEPROM so that it remembers the past provisioning
changes to determine its operating mode in the event
of power loss to the HTU-C.
Provisioning options 6 through 9 will not appear on
the HTU-R provisioning screen, and the alarm setting
provision on the HTU-R provisioning screen is
meaningless in a Litespan environment and should be
ignored.
DSX-1 in the HDSL screens actually refers to a virtual
DS1 channel provided by the time slot interchanger
unit (TSI) of the Litespan CBA to the Litespan
linecard (see DSC Litespan documentation for more
detail). The actual DSX-1 monitoring point is at the
T1 framer onboard the HTU-C linecard.
This monitoring point receives the DS1
cross-connected data recovered from the DS1 virtual
tributary presented to the linecard.
The asynchronous DS1 gate array on the HTU-C line
card is responsible for providing the DS1
cross-connected data that is recovered from the DS1
virtual tributary.
Provisioning options are summarized in Table B.
Each option may be changed to any one of the listed
settings.
Troubleshooting
The Troubleshooting screen, illustrated in Figure 14,
graphically depicts an HDSL circuit. The unit reviews
red, yellow, and blue alarm conditions in the circuit to
automatically predict where a fault is located. Once a
fault location is suspected, the corresponding portion
of the circuit on the screen is highlighted and a
message describing the failure will appear.

9Section 61245002L6-5, Issue 361245002L6-5C
Figure 6. HDSL Main Menu Screen
CIRCUIT ID: EMUL 10/06/98 00:25:00
ADTRAN HDSL MAIN MENU
1) CURRENT SYSTEM STATUS
2) PERFORMANCE HISTORY
3) ADTRAN INFORMATION
4) LOOPBACK OPTIONS
5) PROVISIONING
6) TROUBLESHOOTING
7) SET TIME/DATE/CIRCUIT ID
Choose a screen by pressing the corresponding number.
Figure 7. Current System Status, HRE Dual Loop Screen
CIRCUIT ID: XXX 10/06/98 09:22:14
LOOP #1 <NETWORK> LOOP #2 CURRENT SYSTEM STATUS LOOP #1 <CUSTOMER>LOOP #2
-------- HRE #1 -------- -------- HRE #1 --------
30(30) dB 31(31) dB <- LOSS CUR(MAX) -> 31(31) dB 30(30) dB
YES YES <- SYNC -> YES YES
000/00000 003/00003 <- ES 15M/24H -> 000/00000 000/00000
000/00000 000/00000 <- SES 15M/24H -> 000/00000 000/00000
000/00000 000/00000 <- UAS 15M/24H -> 000/00000 000/00000
LOOPBACK INACTIVE LOOPBACK INACTIVE
N = NETWORK SIDE RECEIVER
HRE1 NET MARGIN (dB) C = CUSTOMER SIDE RECEIVER HRE1 CST MARGIN (dB)
CUR/MIN/MAX CUR/MIN/MAX
____ ____ ____
LP1 12/00/00 |HTUC| LOOP1 |HRE1| LOOP1 |HTUR| LP1 13/00/00
LP2 13/00/00 | |========N| |C========| | LP2 16/00/00
| | | | | |
| |========N| |C========| |
|____| LOOP2 |____| LOOP2 |____|
Press “Z” to zero registers, “X” to restart MIN/MAX, “M” for Main Menu
“P” for previous view.

10Section 61245002L6-5, Issue 361245002L6-5C
Figure 8. Current System Status, Dual Loop Screen
Figure 9. HRE Performance History, Dual Loop Screen
CIRCUIT ID: XXX 10/06/98 09:23:09
24 HOUR REGISTERS PERFORMANCE HISTORY 15 MINUTE REGISTERS
---ES---SES--UAS— --ES-SES-UAS----ES-SES-UAS-
00000 00000 00000 <---CURRENT---> 000 000 000
10/05 ----- ----- ----- <-- --> 09:15 000 000 000 05:15 --- --- ---
10/04 ----- ----- ----- | | 09:00 --- --- --- 05:00 --- --- ---
10/03 ----- ----- ----- | | 08:45 --- --- --- 04:45 --- --- ---
10/02 ----- ----- ----- | | 08:30 --- --- --- 04:30 --- --- ---
10/01 ----- ----- ----- |PREVIOUS | 08:15 --- --- --- 04:15 --- --- ---
09/30 ----- ----- ----- | | 08:00 --- --- --- 04:00 --- --- ---
09/29 ----- ----- ----- <-- | 07:45 --- --- --- 03:45 --- --- ---
| 07:30 --- --- --- 03:30 --- --- ---
VIEW 1 : HRE NETWORK LP1 | 07:15 --- --- --- 03:15 --- --- ---
| 07:00 --- --- --- 03:00 --- --- ---
-->|H|<-----1->|H|<-2----->|H|--> | 06:45 --- --- --- 02:45 --- --- ---
|T| |R| |T| | 06:30 --- --- --- 02:30 --- --- ---
|U| |E| |U| | 06:15 --- --- --- 02:15 --- --- ---
<--|C|<-----3->|1|<-4----->|R|<-- | 06:00 --- --- --- 02:00 --- --- ---
| 05:45 --- --- --- 01:45 --- --- ---
Press view number to select view --> 05:30 --- --- --- 01:30 --- --- ---
Press “P” for previous view
Press “B” to go back 8 hours
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LOOP #1 <NETWORK> LOOP #2 CURRENT SYSTEM STATUS LOOP #1 <CUSTOMER>LOOP #2
--------- HTU-C --------- --------- HTU-R ---------
31(31) dB 30(30) dB <- LOSS CUR(MAX) -> 31(31) dB 31(31) dB
YES YES <- SYNC -> YES YES
000/00000 000/00000 <- ES 15M/24H -> 000/00000 000/00000
000/00000 000/00000 <- SES 15M/24H -> 000/00000 000/00000
000/00000 000/00000 <- UAS 15M/24H -> 000/00000 000/00000
LOOPBACKS INACTIVE LOOPBACKS INACTIVE
DSX-1 DS1
HTU-C MARGIN (dB) ------------------------------ HTU-R MARGIN (dB)
CUR/MIN/MAX ESF <- FRAME -> ESF CUR/MIN/MAX
B8ZS <- CODE -> B8ZS
LP1 11/09/12 N/A <- LBO -> 0 dB LP1 13/13/14
LP2 12/11/12 N/A <- NIU -> YES LP2 14/13/15
00000 <- BPV -> 00000
00000 <- ES -> 00000
00000 <- SES -> 00000
00000 <- UAS -> 00000
NONE <- ALARMS -> NONE
SEALING CURRENT PRESENT
Press “Z” to zero registers, “X” to restart MIN/MAX, “M” for Main Menu.