Page 1
LANEX S.A.
8 Ceramiczna Street
20-150 Lublin
POLAND
tel. +48 81 444 10 11
tel/fax. +48 81 740 35 70
IOA76-1F
May 2009
LANEX S.A., 8 Ceramiczna Street, 20-150 Lublin Service: phone +48 81 443 96 39
POLAND
TM-76, MD-76 MODEM
OPERATING MANUAL
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E1/G.703 FIBER OPTIC MODEM
OPERATING MANUAL
IOA76-1F I May 2009
Table of contents
1 OVERALL CHARACTERISTICS .....................................................................................1
1.1 APPLICATION....................................................................................................................1
1.2 BASIC FEATURES ..............................................................................................................1
1.3 EXAMPLES OF APPLICATION .............................................................................................2
1.4 SYMBOLS AND AVAILABLE VERSIONS............................................................................... 3
2 CONNECTORS AND INDICATORS ................................................................................5
2.1 I
NTRODUCTION................................................................................................................. 5
2.2 TM-76
MODEM ................................................................................................................ 5
2.3 MD-76 MODEM (CARD)....................................................................................................7
3 FUNCTIONAL DESCRIPTION .........................................................................................8
3.1 DIAGNOSTIC AND SIGNALING SYSTEMS ............................................................................8
3.2 A
DDITIONAL CHANNELS ...................................................................................................9
3.3 T
EST LOOPS ....................................................................................................................10
3.4 CLOCK TRANSFER...........................................................................................................10
3.5 EVENT LOG..................................................................................................................... 11
3.6 MONITORED QUALITATIVE PARAMETERS OF G.703 E1 INTERFACE ................................12
3.7 MONITORED QUALITATIVE PARAMETERS OF E2 OPTICAL INTERFACE............................. 13
4 INSTALLATION AND OPERATION .............................................................................14
4.1 OPERATING CONDITIONS ................................................................................................14
4.2 INSTALLATION................................................................................................................14
4.3 POWER SUPPLY...............................................................................................................15
4.4 E1/G.703 LINEAR SIGNAL CONNECTION .........................................................................16
4.4.1 TM-76 and MD-76 ................................................................................................16
4.5 CONNECTION TO VT100 TERMINAL OR A COMPUTER WITH THE INSTALLED LANWIN
MANAGEMENT SOFTWARE
. .........................................................................................................16
4.6 FIBER OPTIC LINE CONNECTION ......................................................................................17
5 OPERATION WITH VT100 TERMINAL.......................................................................20
5.1 A
PPLICATION..................................................................................................................20
5.2 H
ARDWARE REQUIREMENTS...........................................................................................20
5.3 INSTALLATION AND START-UP........................................................................................ 21
5.4 BEGINNING THE TERMINAL OPERATION ..........................................................................21
5.5 MAIN MENU.................................................................................................................... 23
5.5.1 System.................................................................................................................... 24
5.5.2 Interfaces-selection ...............................................................................................25
5.5.2.1 Interfaces-options .............................................................................................. 26
5.5.2.2 Set-up ................................................................................................................ 27
5.5.2.3 15-minute and 24-hour registers .......................................................................28
5.5.3 Time periods..........................................................................................................29
5.5.4 Event log................................................................................................................ 30
5.5.5 Monitoring............................................................................................................. 30
5.5.6 Loops ..................................................................................................................... 31
6 DEVICE SET-UP USING LANWIN PROGRAM ..........................................................32
6.1 GLOBAL SET-UP.............................................................................................................. 32
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E1/G.703 FIBER OPTIC MODEM
OPERATING MANUAL
IOA76-1F II May 2009
6.1.1 Device name .......................................................................................................... 33
6.1.2 Setting date and time ............................................................................................. 33
6.1.3 Additional information .......................................................................................... 34
6.2 CHANNEL ACTIVITY ....................................................................................................... 34
6.3 G.826 STATISTICS .......................................................................................................... 35
6.3.1 Alarm severity level...............................................................................................37
6.3.2 Alarm thresholds ...................................................................................................38
6.4 TEST LOOPS ....................................................................................................................39
6.5 MONITORING..................................................................................................................40
6.6 LOG................................................................................................................................41
6.6.1 Event log................................................................................................................ 41
6.6.2 Event log filter.......................................................................................................41
7 TECHNICAL SPECIFICATION......................................................................................43
7.1 ELECTRICAL CHARACTERISTICS OF E1/G.703 INTERFACE..............................................43
7.2 OPTICAL INTERFACE CHARACTERISTICS .........................................................................44
7.3 MECHANICAL PARAMETERS ...........................................................................................45
7.4 ENVIRONMENTAL REQUIREMENTS.................................................................................. 45
7.4.1 Operation ..............................................................................................................45
7.4.2 Transport...............................................................................................................45
7.4.3 Storage ..................................................................................................................46
7.5 ELECTROMAGNETIC COMPATIBILITY..............................................................................46
7.6 POWER SUPPLY...............................................................................................................46
8 COMPLETE PRODUCT ...................................................................................................47
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E1/G.703 FIBER OPTIC MODEM
OPERATING MANUAL
IOA76-1F III May 2009
List of figures
FIGURE 1. TM-76.1 MODEMS USED IN TELEPHONE NETWORKS .................................................2
FIGURE 2. MD-76.1 MODEMS USED TO CONNECT TELEPHONE SWITCHES AND COMPUTER
NETWORKS USING
SDH NETWORK ...........................................................................................2
FIGURE 3. VIEW AND DESCRIPTION OF TM-76 FRONT PANEL.................................................... 5
FIGURE 4. VIEW AND DESCRIPTION OF DEVICE REAR PANEL......................................................6
FIGURE 5. VIEW OF TM-76 FRONT AND REAR PANEL................................................................7
F
IGURE 6. LOOPS ....................................................................................................................10
F
IGURE 7. INSTALLATION OF THE DEVICES IN THE FORM OF A CARD IN MD-72
TELECOMMUNICATION RACK, FRONT VIEW. ...........................................................................14
FIGURE 8. INSTALLATION OF THE DEVICES IN THE FORM OF A CARD IN MD-72
TELECOMMUNICATION RACK, REAR VIEW. .............................................................................15
F
IGURE 9. INSTALLATION OF THE DEVICES IN THE FORM OF A CARD IN MD-72
TELECOMMUNICATION RACK, SECTIONAL VIEW. .................................................................... 15
FIGURE 10. THE PASSWORD ENTRY PANEL................................................................................22
FIGURE 11. THE MAIN MENU ....................................................................................................23
FIGURE 12. A TERMINAL WINDOW EXAMPLE ............................................................................24
FIGURE 13. THE SYSTEM PANEL ............................................................................................... 25
FIGURE 14. INTERFACES-SELECTION.........................................................................................26
FIGURE 15. INTERFACES-OPTIONS............................................................................................. 26
FIGURE 16. INTERFACES - SET-UP .............................................................................................27
FIGURE 17. 24-HOUR REGISTERS ...............................................................................................29
FIGURE 18. TIME PERIODS......................................................................................................... 29
FIGURE 19. EVENT LOG............................................................................................................. 30
FIGURE 20. MONITORING.......................................................................................................... 31
FIGURE 21. LOOPS ....................................................................................................................31
FIGURE 22. GLOBAL SET-UP...................................................................................................... 32
FIGURE 23. DEVICE NAME.........................................................................................................33
FIGURE 24. SETTING DATE AND TIME........................................................................................33
FIGURE 25. ADDITIONAL INFORMATION.................................................................................... 34
F
IGURE 26. CHANNEL ACTIVITY ............................................................................................... 35
F
IGURE 27. G.826 STATISTICS .................................................................................................. 36
FIGURE 28. G.826 STATISTICS, ALARM SEVERITY LEVEL ......................................................... 37
F
IGURE 29. G.826 STATISTICS, ALARM THRESHOLDS ............................................................... 38
F
IGURE 30. TEST LOOPS ............................................................................................................ 39
FIGURE 31. MONITORING.......................................................................................................... 40
F
IGURE 32. LOG ........................................................................................................................41
F
IGURE 33. EVENT LOG FILTER .................................................................................................42
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E1/G.703 FIBER OPTIC MODEM
OPERATING MANUAL
IOA76-1F IV May 2009
List of abbreviations
AACK Alarm Acknowledgement
ACK Alarm Acknowledged
AIS Alarm Inhibition Signal
AISL AIS from Local interface
AISR AIS from Remote device
BBE Background Block Error
ES Errored Second
ES15 15 Minutes Errored Second Counter
ES24 24 Hours Errored Second Counter
ESFE Errored Second Far End
ETSI European Telecommunications Standards Institute
GND Ground
ITU-T International Telecommunication Union – Telecommunication Standardization
Sector
LDF Laser Diode Failure
LOESx Loss of Electrical Signal
LOF Loss of Frame
LOOS Loss of Optical Signal
LOS Loss of Signal
NUAL Non-Urgent Alarm
NUALA Non-Urgent Alarm Relay
UALA Urgent Alarm Relay Urgent
RAL Remote Alarm
SES Severely Errored Second
SES15 15 Minutes Severely Errored Second Counter
SES24 24 Hours Severely Errored Second Counter
SESFE Severely Errored Second Far End
SESFE15 15 Minutes Far End Severely Errored Second Counter
SESFE24 24 Hours Far End Severely Errored Second Counter
UA, UAL Urgent Alarm
UAS Unavailability Second
VIOL Violation
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E1/G.703 FIBER OPTIC MODEM
OPERATING MANUAL
IOA76-1F V May 2009
Operating safety
TM-76.1 and MD-76.1 devices have been designed and tested for the operating safety in
accordance with Class I of PN-EN 60950 standard.
The device has no built-in disconnecting system. Such a system should be installed
outside the device.
When the device is supplied from a DC source, an easily accessible disconnecting
system should be mounted into the fixed cabling outside the device.
Radiation transmitted by the laser transmitter is harmful to eyes!
URZ DZENIE LASEROWEĄ
KLASY 1
CLASS 1 LASER PRODUCT
Never look at the uncovered socket without a plugged-in fiber optic connector.
The Manufacturer is not responsible for the use of the device in a manner non-compliant
with the operating manual.
This Operating Manual is an integral part of the device delivered to the Users.
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E1/G.703 FIBER OPTIC MODEM
OPERATING MANUAL
IOA76-1F 1 May 2009
1 OVERALL CHARACTERISTICS
1.1 Application
TM/MD-76 linear circuit device enables full duplex digital signal transmission at the bit rate
of 2.048 Mbit/s in accordance with ITU-T/G.703 via a fiber optic line.
TM/MD-76 devices can operate with PCM-30 terminal equipment, telephone switches or
other optional signal sources at the bit rate of 2.048 Mbit/s equipped with the same interface.
The devices are completely transparent for the content of the transmitted signal; it can be
a non-framed or framed signal - provided it complies with the requirements of the G.703
recommendation.
All TM-76, MD-76, TM-77, MD-77 and TM-44 devices can operate with each other if
connected via a fiber optic line. If TM-76 or MD-76 is connected to TM/MD-77, TM-44 fourchannel device, transmission with the first E1 channel is possible.
The optical signal can be transmitted via a couple of single-mode or gradient optical fibers
depending on the version of the device.
Transmission via SM fiber can be realized with devices equipped with LASER type
transmitter.
Transmission via MM fiber can be realized only with devices equipped with both LED
and LASER type transmitters.
1.2 Basic features
Table 1. Basic features of the devices
Symbol Electrical ports Optical ports Available versions Management Power supply
MD-76
card to TM-72
telecommunication rack
MD-91
supervision
module in TM72 rack
18÷60V DC
TM-76
1 port conforming
to ITU-T-G.703,
2.048 Mbit/s
2 xSC
desktop version
RJ-45
connector
18÷60V DC
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E1/G.703 FIBER OPTIC MODEM
OPERATING MANUAL
IOA76-1F 2 May 2009
1.3 Examples of application
TELEPHONE SWITCH
TELPHONE SWITCH
E1 / G. 70 3
E1 / G. 70 3
Fiber optic line
RS-232
TM-76.1
DCE
4-SG
6-TxD
5-RxD
FIBER OPTIC MODEM E1/G.703
A
LCK
RS-232
TM-76.1
DCE
4-SG
6-TxD
5-RxD
FIBER OPTIC MODEM E1/G. 703
ALCK
Figure 1. TM-76.1 modems used in telephone networks
TELEPHONE SWITCH
TELEPHONE SWITCH
ROUTER
ROUTER
ETHERNET
ETHERNET
4 x E1 / G.703
4 x E1 / G.703
G.7 03
G.7 03
G.7 03
Fiber optic line
MD-76
MD-76
MD-76
MD-76
Fiber optic line
RI NG SDH
TRANSFER TERMINAL EQUIPMENT
TRANSFER TERMINAL EQUIPMENT
MD-76.1
ACK
RAL
10
ACK
-3
UA
LOF
NUA
10
ALACK
-6
LOOSLDF
LOES
MD-76.1
A
CK
RAL
10
A
CK
-3
U
A
LOF
NU
A
10
A
LACK
-6
LOOS
LDF
LOES
MD-76.1
A
CK
RAL
10
A
CK
-3
U
A
LOF
NU
A
10
A
LACK
-6
LOOSLDF
LOES
MD-76.1
ACK
RAL
10
ACK
-3
UA
LOF
NUA
10
ALACK
-6
LOOSLDF
LOES
Figure 2. MD-76.1 modems used to connect telephone switches and computer networks using
SDH network
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E1/G.703 FIBER OPTIC MODEM
OPERATING MANUAL
IOA76-1F 3 May 2009
1.4 Symbols and available versions
List of abbreviations:
SH – short haul
LH – long haul
MM – designed for operate with multi-mode fiber
SM - designed for operate with single-mode fiber
WDM – version to operate with single fiber, using WDM (Wavelength Division Multiplexing)
technology
1310 nm - transmitter working with 1310 nm wavelength, receiver working with 1310 nm
wavelength
1550 nm - transmitter working with 1550 nm wavelength, receiver working with 1550 nm
wavelength
1310/1550 nm - transmitter working with 1310 nm wavelength, receiver working with 1550 nm
wavelength
1550/1310 nm - transmitter working with 1550 nm wavelength, receiver working with 1310 nm
wavelength
E1 modem is available in two versions:
• as a desktop version in a metal casing, symbol TM-76,
• as a card installed in TM-72 telecommunication rack to cooperate with another TM-72
or MD-76 card.
A symbol example:
TM-76.1-3 – desktop modem equipped with laser transmitter of 1310 nm wave length.
Haul:
1 - short (SH)
2 - long (LH)
TM - 76.1 - X - Y
Type of optical transmitter:
3 - 1310 nm SM
4 - 1550 nm SM
5 - WDM 1310/1550 nm SM
6 - WDM 1550/1310 nm SM
Production version
Type of mechanical design:
TM - desktop version
MD - rack version
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E1/G.703 FIBER OPTIC MODEM
OPERATING MANUAL
IOA76-1F 4 May 2009
Note: 1. Each time a symbol containing the letter "X" instead of its corresponding
digit is used in the Manual, it means that the feature specified in this part
of the symbol is insignificant concerning the discussed parameter and may
be equal to any value from the above-mentioned range. However,
the device symbol indicated in a sales order must contain only digits
following the manufacturer symbol "TM" or "MD" (all features of
the ordered device must be specified).
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E1/G.703 FIBER OPTIC MODEM
OPERATING MANUAL
IOA76-1F 5 May 2009
2 CONNECTORS AND INDICATORS
2.1 Introduction
Device versions differ from each other with the type of the used optical elements.
There are no differences in the mechanical structure.
2.2 TM-76 modem
6-Tx
5-Rx
4-SG
FIBER OPTIC MODEM E1/G.703
AACK
TM-76.1
RS-232
LOES
LOOS
1010
-6
-3
RAL
ACK
ACK
LDF
LOF
UA
NUA
1
2
3
4
1 - power supply indication diode
2 - supervision connector
3 - group of signaling diodes:
LOES – loss of E1 interface input signal
LOOS – loss of optical receiver input signal
LDF– laser diode failure (loss of optical transmitter output power)
LOF – loss of frame synchronization of received signal
10
-3
– error rate 10-3 exceeded
10
-6
– error rate 10-6 exceeded
RAL – remote alarm
group of alarm condition signaling diodes:
UA – urgent alarm
ACK – acknowledgement of urgent alarm
NUA – non-urgent alarm
ACK – acknowledgement of non-urgent alarm
4- AACK – alarm acknowledgment button
Figure 3. View and description of TM-76 front panel
The device is equipped with V.28 interface enabling modem management from VT100 terminal
level. The interface is described in Table 2.
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E1/G.703 FIBER OPTIC MODEM
OPERATING MANUAL
IOA76-1F 6 May 2009
Table 2. Description of RS-232 / V.28 DCE connector outputs (RJ-45 type)
Pin Description
4 SGND
6 Tx OUT
5 Rx IN
RS-232 cable should be used to connect TM-76 multiplexer to a terminal. Table 3 specifies
the required list of cable connections.
Table 3. PC computer (terminal) to TM-76 device connecting cable specification
TM-76.1 modem side
PC computer or terminal side
RJ-45 connector
Pin symbol DSUB-9 female connector
DSUB-25 female
connector
6
Tx 2
3
5
Rx 3
2
RTS – CTS 7 – 8
4 – 5
DTR - DSR 4 – 6
6 – 20
4
SGND 5
7
1 - optical receiver output
2 - optical receiver input
3 -
120 ohm symmetric linear signal input/output Ω - DB-9 connector
4 -
connector with a screw mounting to connect 18÷60V DC power supply source
5 - grounding terminal
Figure 4. View and description of device rear panel
36 60 VDC
_
.
.
52
97
18
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E1/G.703 FIBER OPTIC MODEM
OPERATING MANUAL
IOA76-1F 7 May 2009
2.3 MD-76 modem (card)
MD-76.1
MD-76.1
529
7
AACK
4
5
6
1
2
3
Figure 5. View of TM-76 front and rear panel
1 - power supply indication diode
2 - group of signaling diodes:
LOES – loss of input electrical signal
LOOS – loss of optical receiver input signal
LDF– laser diode failure (loss of optical transmitter output power)
LOF – loss of frame synchronization of received signal
10
-3
– error rate 10-3 exceeded
10
-6 –
error rate 10-6 exceeded
RAL – remote alarm
group of alarm condition signaling diodes:
UA – urgent alarm
ACK – acknowledgement of urgent alarm
NUA – non-urgent alarm
ACK – acknowledgement of non-urgent alarm
3- AACK – alarm acknowledgment button
4- Optical receiver input
5- Optical receiver output
6-
120 ohm symmetric linear signal input/output Ω - DB-9 connector
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E1/G.703 FIBER OPTIC MODEM
OPERATING MANUAL
IOA76-1F 8 May 2009
3 FUNCTIONAL DESCRIPTION
TM-76 and MD-76 devices perform the following functions:
1. processing of electrical signals at the bit rate of 2.048 Mbit/s in HDB-3 three-level code into
a digital signal in the natural code;
2. multiplexing of four data streams at the bit rate of 2.048 Mbit/s according to the G.742
recommendation. TM-76 and MD-76 use a single data channel.
3. encoding in 5B/6B code;
4. processing of an electrical signal into an optical one;
5. receiving of an optical signal and processing it into an electrical signal;
6. decoding of a data stream encoded in 5B/6B code;
7. demultiplexing of four data streams at the bit rate of 2.048 Mbit/s. TM-76 and MD-76 use
a single data channel.
8. encoding of a data stream at the bit rate of 2.048 Mbit/s in HDB-3 code;
9. control and signaling of the basic parameters of the multiplexer operation and generation
of alarms in the event of failures.
3.1 Diagnostic and signaling systems
TM-76 and MD-76 type devices automatically control the parameters of E1/G.703 local
interface and linear optical signal, and detect and signalize the following conditions and values:
E1 G.703, G.704 local interface:
• loss of interface input signal
• receiving of AIS signal coming from E1 interface
• receiving of AIS signal coming from demultiplexer
• HDB3 code violation
Linear optical interface:
• loss of linear input signal
• loss of frame synchronization of received signal
• block error rates 1x10
-3
and 1x10-6 exceeded
• receiving of the AIS bit in G.742 frame signaling a remote alarm
An alarm condition is indicated as follows:
• appropriate local interface LED is switched on: LOES
• appropriate optical interface LED is switched on: LOOS, LOF, 10-3, 10-6, RAL, LDF
• shorting of UALA, NUALA alarm relay terminals in TM-72 telecommunication rack.
When a failure is detected, a "non-urgent" alarm – NUA (indicating a failure condition,
which does not interrupt transmission) or an "urgent" alarm – UA (meaning a transmission
interruption - an immediate operator's response is necessary) is generated.
MD-76 device card signalizes generation of an urgent or non-urgent alarm by sending
a signal to activate the alarm relays in TM-72. The urgent and non-urgent alarm signaling relay
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E1/G.703 FIBER OPTIC MODEM
OPERATING MANUAL
IOA76-1F 9 May 2009
contacts in the telecommunication rack are connected to DB- 9 female socket. The detected
failure conditions and actions taken are shown in Table 1.
Table 4. Detected failure conditions and accompanying actions.
Actions taken
LED diode
Re-
lay
1)
E1 channel signal
G.742
frame
bit
Failed
Element
Failure
condition
Alarm
LOOS
LOF
10
-3
10
-6
LDF
RAL
LOES
UA
NUA
AIS
Loss of signal UA
;
CO
AIS signals are
transmitted to all E1
interfaces
;
Loss of frame
synchronization
UA ;
CO
AIS signals are
transmitted to all E1
interfaces
;
Error rate
> 10
-3
UA
;
OC
AIS signals are
transmitted to all E1
interfaces
;
Error rate
> 10
-6
NUA
;
C O ---
Transmitter
failure
UA
;
---
Linear optical
Interface
Remote alarm
;
---
Local
interface
E1
G.703,
G.704
Loss of signal UA
;
CO
AIS signal is transmitted
via E1 channel to
multiplexer
Entire device
Loss of power
supply
UA
CC
; – LED diode is on
1)
– alarm relay, an activated alarm is indicated by closed relay contacts (C – closed contacts,
O – open contacts). TM-76.1 version is not equipped with alarm relays.
3.2 Additional channels
A frame is generated in the multiplexing system. The frame includes two bits, which are
used to generate two additional synchronous bi-directional data transmission channels
at the speed of 10 kbit/s each.
The first bit – Alarm Indication Signal Bit is used to transmit an alarm signal to a remote
device.
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E1/G.703 FIBER OPTIC MODEM
OPERATING MANUAL
IOA76-1F 10 May 2009
The other bit – National Bit is used for communication between the supervision systems
of a local and remote device.
3.3 Test loops
TM-76 and MD-76 device software enables closing a loop on E1 electric interface
and optical interface in the direction to and from the device. Concerning E1 interface, both loops
are closed at the same time. The figure below shows possible loops. A loop number is consistent
with the number used in the device software.
E1 por t
1
Opt i cal p or t
Figure 6. Loops
3.4 Clock transfer
TM-76 and MD-76 devices are based on a plesiochronous multiplexer compliant with
ITU-T G.742 standard. 2Mbit/s signals received on G.703 E1 electric interfaces are transmitted
separately. E2 linear optical interface collective signal clock is also separate from the clock
signals generated in E1 interface. The requirement is that the clock signal frequency restored on
E1 interface must be in accordance with ITU-T G.703 recommendation (2.048 MHz ± 50ppm).
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E1/G.703 FIBER OPTIC MODEM
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3.5 Event log
TM-76 and MD-76 devices can record the time and date of an event of a specified
criterion. The devices record the following types of events:
• an appearance or loss of power supply voltage,
• an appearance or loss of G.703 E1 interface input signal,
• an appearance or loss of AIS signal transmitted from a unit connected to E1 interface or
connected to E1 channel with E2 collective signal,
• an appearance or loss of E2 optical interface input signal,
• a gain or loss of G.742 frame synchronization on E2 optical interface,
• exceeding or going below 10-3 error rate threshold on E2 optical interface,
• exceeding or going below 10-6 error rate threshold on E2 optical interface,
• exceeding or going below a user-defined ES 15-minute errored second counter (ES15)
threshold – there is a separate counter for each interface,
• exceeding or going below a user-defined ES 24-hour errored second counter (ES24)
threshold – there is a separate counter for each interface,
• exceeding or going below a user-defined SES 15-minute severely errored second counter
(SES15) threshold – there is a separate counter for each interface,
• exceeding or going below a user-defined SES 24-hour severely errored second counter
(SES24) threshold – there is a separate counter for each interface,
• activation or deactivation of test loops,
• approval of a device set-up modification,
• an attempt of unauthorized access to the device set-up system using VT100 terminal
emulator, if the system is password-protected.
Reviewing and deleting the event log as well as defining maximum and minimum
threshold values for ES15,24 and SES15,24 counters of E1 and E2 interfaces is possible with
the Lanwin application or VT100 terminal emulator described in sections 5.5.4 Event log
and 6.6.1 Event log.
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E1/G.703 FIBER OPTIC MODEM
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3.6 Monitored qualitative parameters of G.703 E1 interface
TM-76 and MD-76 devices are provided with a function of qualitative parameter monitoring.
The devices automatically monitor the interface signal parameters and detect, count and signalize
the following conditions and parameters:
Indicators:
• LOES - loss of electrical signal
• VIOL - HDB3 code violation on G.703 E1 optical interface
• AISL - AIS signal detection on G.703 E1 interface
• AISR - AIS signal detection in E1 flux demultiplexed from E2 collective
channel.
• ES15 - exceeding a 15-minute errored second counter threshold
• SES15 - exceeding a 15-minute severely errored second counter threshold
• ES24 - exceeding a 24-hour errored second counter threshold
• SES24 - exceeding a 24-hour severely errored second counter threshold
Counters:
• ES15 - 15-minute errored second counter
• SES15 - 15-minute severely errored second counter
• ES24 - 24-hour errored second counter
• SES24 - 24-hour severely errored second counter
• BBE15 - 15-minute background block error counter
• BBE24 - 24-hour background block error counter
• UAS15 - 15-minute unavailability second counter
• UAS24 - 24-hour unavailability second counter
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E1/G.703 FIBER OPTIC MODEM
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3.7 Monitored qualitative parameters of E2 optical interface
TM-76 and MD-76 devices are provided with a function of qualitative parameter monitoring.
The devices automatically monitor the linear interface signal parameters and detect, count
and signalize the following conditions and parameters:
Indicators:
• LOOS - loss of optical signal
• LDF - laser diode failure
• LOF - loss of frame synchronization
• 10E-3 - error rate 10
-3
exceeded
• 10E-6 - error rate 10
-6
exceeded
• RAL - remote device alarm indicating a remote device connection failure
(between a local and remote device)
• ES15 - exceeding a 15-minute errored second counter threshold
• SES15 - exceeding a 15-minute severely errored second counter threshold
• ES24 - exceeding a 24-hour errored second counter threshold
• SES24 - exceeding a 24-hour severely errored second counter threshold
• SESFE15 - exceeding a 15-minute severely errored second far end counter
threshold
• SESFE24 - exceeding a 24-hour severely errored second far end counter threshold
Counters:
• ES15 - 15-minute errored second counter
• SES15 - 15-minute severely errored second counter
• ES24 - 24-hour errored second counter
• SES24 - 24-hour severely errored second counter
• SESFE15 - 15-minute severely errored second far end counter
• SESFE24 - 24-hour severely errored second far end counter
• BBE15 - 15-minute background block error counter
• BBE24 - 24-hour background block error counter
• UAS15 - 15-minute unavailability second counter
• UAS24 - 24-hour unavailability second counter
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4 INSTALLATION AND OPERATION
4.1 Operating conditions
The devices can operate continuously in closed rooms and in conditions according to
paragraph 7.4.1 of this Operating Manual. The devices should not be directly exposed
to sunlight. Ventilation slots must not be plugged. We do not recommend to put the devices on
heat sources, although they can be placed on another device of the same type or installed
in a rack together with other devices. However, such an arrangement requires a free air flow or,
if necessary, forced ventilation.
4.2 Installation
TM-76 is a desktop device; MD-76 is installed in MD-72 telecommunication rack.
MD-76 device comprises a digital card and an interface card. The digital card is installed
in the front part of the rack in slots 1÷16 and the interface card is installed in their corresponding
slots in the rear part of the rack. The cards are equipped with pullers for easy assembly
and disassembly in TM-72 rack. The cards can be installed in the rack without a need to turn off
the power supply. There is no specific sequence of assembly of the digital card and interface
card.
The figures below show the rack with the installed MD-76 card (slot 2), MD-77 card (slot 1)
and MD-91 management module card (slot 17) enabling communication with the Lanwin
management application.
The management module card can be installed in slot 17 only.
Figure 7. Installation of the devices in the form of a card in MD-72 telecommunication rack,
front view.
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S
Figure 8. Installation of the devices in the form of a card in MD-72 telecommunication rack,
rear view.
Figure 9. Installation of the devices in the form of a card in MD-72 telecommunication rack,
sectional view.
4.3 Power supply
TM-76 modem can be supplied with 18÷60V DC voltage. MD-76 card is supplied with
18÷60V DC voltage from TM-72 telecommunication rack. Power supply connection is described
in TM-72 rack operating manual. Power supply voltage parameters are given in paragraph 7.6
The correct power supply of the device is signalized by a light indicator
on the front panel.
18÷60V power supply unit voltage should be connected to the socket with external screw
connections. There is no requirement concerning polarity of power supply voltage.
The grounding should be connected to the grounding terminal on the casing. The grounding
cable should have low impedance for high frequencies.
Note. The device has no built-in disconnecting system, thus an easily accessible
disconnecting system should be mounted into the fixed cabling.
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4.4 E1/G.703 linear signal connection
4.4.1 TM-76 and MD-76
E1/G.703 interface input and output signals of TM-76 and MD-76 devices are transmitted
via two screened symmetric cables of 120 Ω impedance or one double screened cable
of the same impedance.
The following rules should be observed to meet the requirements concerning noise
emissions. Symmetric cables should be connected using DB-9 plug equipped with a metal
or metal plated casing (shield) and the cable screen should be connected to the casing over the
whole circumference. It is insufficient just to connect the screen to the "structural earth"
terminals on the E1/G.703 120Ω interface socket.
The E1/G.703 120 linear module socket outputsΩ are described in 05.
Table 5. Description of TM-76 and MD-76 E1/G.703 120 interface outputsΩ
Pin No. Description of outputs
1 Not connected
2 TX_A Linear signal output
3 GND
4 GND
5 RX_A Linear signal input
6 Not connected
7 TX_B Linear signal output
8 GND
9 RX_B Linear signal input
4.5 Connection to VT100 terminal or a computer with the installed Lanwin
management software.
TM-76 device is equipped with RS-232 interface enabling modem management from
the level of VT100 terminal or using the Lanwin software. The interface is described in 06.
Table 6. Description of RS-232 / V.28 DCE connector outputs (RJ-45 type)
Pin Description
4 SGND
6 Tx OUT
5 Rx IN
RS-232 cable should be used to connect TM-76 modem to a terminal. Table 7 specifies the
required list of cable connections.
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Table 7. TM-76 - computer connecting cable specification
TM-76.1 modem side
PC computer or terminal side
RJ-45 connector
Pin symbol DSUB-9 female
connector
DSUB-25 female
connector
6
Tx 2
3
5
Rx 3
2
RTS – CTS 7 – 8
4 – 5
DTR - DSR 4 – 6
6 – 20
4
SGND 5
7
MD-76 and MD-77 cards in TM-72 rack can be managed with the Lanwin software
installed on a PC computer. TM-72 rack must be equipped with MD-91 management card.
The managing computer should be connected to the rack with the cable specified in the table
below.
Table 8. TM-72 - computer connecting cable specification.
TM-72 rack MD-91 card
side
PC computer or terminal side
DSUB-9 connector
(female)
Pin symbol DSUB-9 female
connector
DSUB-25 female
connector
2
Tx 2
3
3
Rx 3
2
RTS – CTS 7 – 8
4 – 5
DTR - DSR 4 – 6
6 – 20
4
SGND 5
7
casing
casing
casing
4.6 Fiber optic line connection
The maximum length of a fiber optic line to connect devices is not a unequivocal value
because it depends on external factors, such as light pipe attenuation coefficient, throughconnector attenuation as well as the accepted safety margin. The length, i.e. range can be
determined by performing an optical power balance.
The power balance for the devices is shown in 09. The fiber optic line length calculated in
the are maximum values for the adopted assumptions (maximum values from the cable catalog
of the Optical Telecommunications Technology Center in Lublin are used as light pipe
attenuation coefficients). When other assumption are used, the obtained values can be slightly
different.
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Table 9. Power balance
Device version
76.1-3-1 76.1-3-1 76.1-3-2 76.1-4-1 76.1-5/6-1 76.1-5/6-2
1
Wave length
(for WDM have been done
calculation for unfavourable
case - 1310 nm
)
LASER
1310
nm SH
LASER
1310 nm
SH
LASER
1310 nm
LH
LASER
550 nm
SH
WDM
1310/1550
nm SH
WDM
1310/155
0 nm LH
2 Type of optical fiber
1310 nm 1310 nm 1310 nm 1550 nm 1310 nm 1310 nm
3 Transmitter power level
SM
MM
1)
SM SM SM SM
4 Receiver sensitivity
[dBm] -15 -15 -5 -5 -14 -8
5 Power budget (3-4)
[dBm] -35 -35 -36 -35 -34 -34
6 Power margin for devices
[dBm] 20 20 31 30 20 26
7 Power margin for cable
[dB] 4 4 4 4 4 4
8
Light pipe attenuation
coefficient
[dB] 2 2 3 3 2 3
9
Through-connector average
attenuation
[dB/k
m] 0,4 1 0,4 0,2 0,4 0,4
10
Transmission range
(5-6-7)/(8+9)
[dB] 0,1 0,2 0,1 0,1 0,1 0,1
11 Minimum line attenuation
[km] 28 12 48 77 28 38
[dB] 0 dB 0 dB 0 dB 0 dB 0 dB 0 dB
1)
The device can operate with multimode optical fibers .
TM-76 and MD-76 modems can operate with a two-fiber optical line based - depending on
version - on:
• 50/125 or 62.5/125 µm multimode optical fibers - with SC connector;
• single-mode optical fibers - with SC/PC connectors (angle terminal connectors must not be
used - their symbol usually includes APC marking).
A connection should be made with a double station cable or two single cables. The device
should be positioned in such a manner that no forces - lateral or longitudinal - act on
the connectors. A cable bend radius cannot be less than a value recommended by
the manufacturer - it can be practically assumed as 50 mm.
Optical fiber connectors - particularly single-mode ones - are very precise components.
That is why they should be handled with care, with no excessive forces when connecting
and disconnecting them. Also the socket and the plug "ferrule" should be kept ideally clean.
If dirty, the socket can be blown with clean compressed air, while the ferrule can be cleaned with
isopropyl or ethyl alcohol (denatured alcohol must not be used). A piece of cloth, which does not
leave fibers, should be used for this purpose.
The diameter of the single-mode optical fiber core is only 9 µm. Thus any contamination
particles of similar size may cause significant signal attenuation and completely disable
transmission.
If no optical fiber plugs are connected to the device, the sockets should be always secured
with protective caps to avoid dust penetration.
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The following steps should be performed to make a connection:
• remove the protective caps from the socket and the plug ferrule;
• put the ferrule into the socket end caring of accurate alignment of the socket and plug axes
- any attempts of pushing the plug "obliquely" can damage the connector. Pay attention to place
the key located on the plug circumference (outside the ferrule) in the notch in the socket;
• tighten the connector nut until slight resistance is felt.
Please remember that the fiber optic line connected from one side to the optical transmitter should be connected to the receiver from the other side. This fact will be indicated by the red
diode "LOOS", which will go out. A reverse connection is not harmful but of course the devices
will not function ("LOOS" diodes in both multiplexers will be on and AIS signal will be sent to
E1/G.703 interfaces).
Any manipulations of fiber optic connectors may be performed when the power supply is on.
The optical transmitter may be connected to the receiver of the same multiplexer with a short
section of an optical cable in order to close the "local loop" and take measurements.
NOTE !
Radiation transmitted by the laser transmitter is harmful to eyes! It is indicated
by the following symbol placed on the device:
Never look at the uncovered socket without a plugged-in fiber optic connector. The transmitter
emits full power always when the device is on - with or without a signal connected
to the electrical input.
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5 OPERATION WITH VT100 TERMINAL
5.1 Application
The supervision software is adapted to support VT100 terminal; it is used to set up
and monitor the functions of TM-76 modem. MD-76 device is installed in the rack and it
does not have a contact enabling terminal connection.
The software provides the following features:
Activation / deactivation of component channels
Installation of test loops in a local device
ES, SES, UAS and BBE monitoring
Monitoring the following events:
Loss of optical signal
Transmitter failure
Loss of frame synchronization
Alarm from a remote device
Loss of signal component
Exceeding 10-3 error rate
Exceeding 10-6 error rate
HDB3 code violation in a component channel
AIS signal detection on E1 interface
AIS signal detection in E1 flux demultiplexed from E2 collective
channel
Alarm status monitoring:
Active
Inactive
Generation of event logs
5.2 Hardware requirements
There are many programs enabling VT100 terminal emulation, which operate
on various hardware platforms and support various operating systems. The most popular
are TERM95 included in Norton Commander package supporting DOS environment
or HYPERTERMINAL supporting Windows (both for PC-class computers).
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5.3 Installation and start-up
In order to start up the supervision software, VT100 terminal or a VT100 terminal
emulation program should be correctly set up.
The tables below show examples of TERM95 and HYPERTERMINAL setup. If another
program is used, the user should set the appropriate parameters based on the user manual
of the program:
Transmission speed 9600
Data bits 8
Parity none
Stop bits 1
Flow control none
Emulation VT100
Table 10. VT100 terminal settings for "TERM95" program
TERM95
Speed 9600
Number of data bits 8
Number of stop bits 1
flow control none
Local echo none
Terminal type VT100
Table 11. VT100 terminal settings for "HYPER TERMINAL" program
HYPERTERMINAL
Bits per second 9600
Data bits 8
Parity none
Stop bits 1
Flow control none
Font terminal
Local echo of entered characters none
5.4 Beginning the terminal operation
After the device is started up and RS-232 interfaces are connected, enter the START command
and press the ENTER button. The command may be entered in small or capital letters.
When the command is identified, TM-76 opens the first window specifying the device type
and its address. Then the password entry window opens. It allows the user to enter the password
protecting from unauthorized access to the device. If the password is not active, it is sufficient
to press ENTER.
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Figure 10. The password entry panel
EMERGENCY PASSWORD REMOVAL!!
If the user forgets the password, he/she can remove it by performing an emergency
procedure.
To do this, the user - instead of the password - should enter %code01. Then, the program
will generate an 8-digit string, which should be submitted to the LANEX service. Based on
the string, an emergency password will be generated enabling 12-hour access to the device.
Within a period of 12 hours, the password allows the user to delete the old password
and enter a new one.
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5.5 Main menu
The main menu is the entry window to all remaining panels and the submenu.
The submenu is selected with the ARROWS and ENTER keys.
From its level, you can access the following panels:
• System
• Interfaces
• Event log
• Monitoring
• Loops
• About the program
Figure 11. The Main menu
The operation needs only the ARROWS, BACKSPACE, SPACE, ENTER keys
and a combination of some other keys, e.g. CTRL+X. The user is forced to "manually" exchange
information with the terminal only when really necessary (entry and modification of clock,
password, device name).
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Each of the available panels comprises three fields (common to all panels). These are:
• panel name and date bar,
• device name and address bar,
• key shortcut bar.
1.
2.
3.
Figure 12. A terminal window example
1. active panel name and current date and system clock bar
2. device name and address bar
3. key shortcut bar indicating operations available in a given panel
5.5.1 System
The System panel allows the user to:
• modify the device name,
• activate the password and enter a new one (you will be prompted to give the password during
the terminal start-up),
• modify the system time and date,
• set the full or reduced laser power,
• specify the counting base time in 15-minute and 24-hour periods.
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Figure 13. The System panel
The parameters set up in the System panel are listed in 0.
Table 12. Device set-up registers. The values in the gray fields in the table are given
in the phase of production. Any subsequent modification by the user is impossible.
Parameter name Allowed status
Default
value
Description
Device type TM – 76 --- Type of configured device
Software version --- --- Device software version number
Hardware version --- --- Device hardware version
Device address --- --- Device address given in production
Serial No. --- ---
Number given to the device in
production
Device name 16 – character text TM – 76.1 Any device name given by the user
Access password 8 – character text ---
Password protecting from
unauthorized access to the device
System time
Digits for individual
elements of date and time
---
System clock arrangement:
Date – yyyy,mm,dd
Time – hh,mm,ss
Language Polish or English Polish Language selection
Laser Full power --- Laser transmitter operation status
Counting start
Two digits for hour and
minute
00:00
Hour and minute of count start for ES
and SES registers in the following
arrangement: hh,mm
5.5.2 Interfaces-selection
This panel allows the user to select the interface to set up and monitor the quality
parameters of the interface and its activation.
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Figure 14. Interfaces-selection
5.5.2.1 Interfaces-options
The Interfaces-options panel is used to select the following panels:
• interface set-up,
• viewing 15-minut and 24-hour ES, SES, BBE, UAS, ESFE, SESFE registers,
• viewing the objects related to quality monitoring in the set periods
Figure 15. Interfaces-options
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5.5.2.2 Set-up
The Set-up panel is used to:
• set up alarm severity levels when exceeding the quality thresholds in 15-minute
and 24-hour periods,
• set up alarm switch-on and switch-off thresholds when exceeding the quality thresholds
in 15-minute and 24-hour periods.
Figure 16. Interfaces - set-up
Alarm severity levels when exceeding the switch-on threshold can be as follows:
• UAL – urgent alarm,
• NUAL – non-urgent alarm
• NONE – no alarm is generated
A switch-on threshold defines the number of seconds, after exceeding of which an alarm
specified by a severity level is activated.
A switch-off threshold defines the number of seconds, which specifies deactivation of
an alarm specified by a severity level, if the counted number of seconds is less or equal to
the threshold at the end of a given period.
The table below shows allowable alarm statuses (severity levels) and allowable values
of alarm switch-on and switch-off thresholds when exceeding ES and SES threshold values.
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Table 13. Interface set-up – alarm severity level values, switch-on and switch-off threshold
values.
Parameter name Allowed status
Default
value
Description
ES/SES threshold
exceeding alarm
Urgent alarm
Non-urgent alarm
None
Urgent alarm
for SES
counters
Non-urgent
alarm for ES
counters
ES/SES threshold exceeding alarm
activity
Threshold value of
switching on an urgent
alarm after SES was
exceeded in a 15-minute
period
0..900 15
Value for SES in a 15-minute period,
above which an urgent alarm is
switched on
Threshold value of
switching off an urgent
alarm after SES was
exceeded in a 15-minute
period
0..900 0
Value for SES in a 15-minute period,
below which an urgent alarm is
switched off
Threshold value of
switching on an urgent
alarm after SES was
exceeded in a 24-hour
period
0..86400 1440
Value for SES in a 24-hour period,
above which an urgent alarm is
switched on
Threshold value of
switching off an urgent
alarm after SES was
exceeded in a 24-hour
period
0..86400 0
Value for SES in a 24-hour period,
below which an urgent alarm is
switched off
Threshold value of
switching on a nonurgent alarm after ES
was exceeded in a 15minute period
0..900 120
Value for ES in a 15-minute period,
above which a non-urgent alarm is
switched on
Threshold value of
switching off a nonurgent alarm after ES
was exceeded in a 15minute period
0..900 0
Value for ES in a 15-minute period,
below which a non-urgent alarm is
switched off.
Threshold value of
switching on a nonurgent alarm after ES
was exceeded in a 24hour period
0..86400 11520
Value for ES in a 24-hour period,
above which a non-urgent alarm is
switched on
Threshold value of
switching off a nonurgent alarm after SES
was exceeded in a 24hour period
0..86400 0
Value for ES in a 24-hour period,
below which a non-urgent alarm is
switched off
5.5.2.3 15-minute and 24-hour registers
These panels allow the operator to monitor ES, SES, SESFE, BBE and UAS counter
values in 15-minute and 24-hour periods, respectively. The "alarm" columns show the type of
an alarm generated by exceeding an appropriate switch-on threshold (which is set up
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in the Set-up panel). The device stores 16 records of 15-minute counters for each interface
and 2 records of 24-hour counters for each interface. Data is recorded only for non-zero counter
values.
Figure 17. 24-hour registers
5.5.3 Time periods
This panel is used to monitor ES, SES, BBE rates in any two time periods specified
by the operator.
Figure 18. Time periods
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5.5.4 Event log
This panel displays events concerning the device. The types of recorded events
are described in paragraph 3.6.
This panel allows the user to delete all events recorded in the device memory using
the CTRL+R key combination.
Figure 19. Event log
5.5.5 Monitoring
This panel displays parameters, which represent the current status of E1 and E2 interfaces:
• interface defect and anomaly monitoring points,
• transmission quality monitoring objects related to individual interfaces. The meaning
of individual indicators is described in paragraph 3.6.
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Figure 20. Monitoring
5.5.6 Loops
TM-76 modem terminal is capable of activating test loops from the side of E1
and E2 interfaces. The test loops are described in paragraph 3.3 Test loops.
Figure 21. Loops
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6 DEVICE SET-UP USING LANWIN PROGRAM
The Lanwin application in a local version enables the user to supervise and monitor TM-76
in a desktop version and TM-72 racks equipped with MD-76 modem cards. The description
of computer connection is given in paragraph 4.5 Connection to VT100 terminal or computer
equipped with LanWin management software.
6.1 Global set-up
This tab allows the user to enter the name of the device, to set the system date and time
and to view additional device information.
Figure 22. Global set-up
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6.1.1 Device name
By pressing the "Device name" button you will opens a window, in which you can enter its
name. During the operation, the entered name will appear in the active device window
and in the window of the device, whose name was modified.
Figure 23. Device name
6.1.2 Setting date and time
If you press the "Setting time and date" button, the following window will open.
Figure 24. Setting date and time
If you make any modifications and press the "OK" key, the system time and date parameters
of the device will be updated.
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6.1.3 Additional information
If you press the "Additional information" button, a window will open showing additional
information concerning the connected device.
Figure 25. Additional information
6.2 Channel activity
The "Channel activity" tab allows the user to switch on and off a single E1 transmission
channel. If you switch off a channel, it will block transmission in the channel and deactivate all
alarm criteria associated with the channel.
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Figure 26. Channel activity
6.3 G.826 statistics
This tab enables the user to monitor the following numbers in 15-minut and 24-hour
periods:
• ES errored seconds,
• SES severely errored seconds,
• EB errored bloks,
• UAS unavailability seconds,
Additionally, you can set threshold values for switching on and off the alarms for SES15,
SES24, ES15, ES24, SESFE15, SESFE24 counters, based on which event log entries and alarms
are generated. Each counter has an associated alarm severity level identifying the type
of a generated alarm.
The user can set the following alarm severity levels:
• urgent alarm,
• non-urgent alarm,
• no alarm.
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Figure 27. G.826 statistics
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6.3.1 Alarm severity level
The window shown below allows you to set an alarm severity level. The window will open
if you select the "Alarm severity level" option from the Menu.
Figure 28. G.826 statistics, Alarm severity level
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6.3.2 Alarm thresholds
The window shown below allows you to set an alarm switch-on and switch-off threshold.
The window will open if you select the "Threshold set-up" option from the Menu.
Figure 29. G.826 statistics, Alarm thresholds
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6.4 Test loops
The tab "TM-76 test loops" allows you to activate the test loops from the side of E1
and E2 interfaces. The test loops are described in paragraph 3.3 Test loops.
Figure 30. Test loops
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6.5 Monitoring
This panel displays parameters, which represent the current status of E1 and E2 interfaces:
• interface defect and anomaly monitoring points,
• transmission quality monitoring objects related to individual interfaces. The meaning
of individual indicators is described in paragraph 3.7.
Figure 31. Monitoring
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6.6 Log
6.6.1 Event log
The "Event log" tab displays the recorded events concerning the modem. The types
of recorded events are described in paragraph 3.5. This tab allows you to delete the complete list
of recorded events. You can do this by clicking the right mouse button (when the cursor is placed
in this window) and selecting the "Delete the log" command.
Figure 32. Log
6.6.2 Event log filter
This tab is divided into two parts. The top part of the tab displays events, which are the result
of the filtering of all recorded events (displayed in the "Event log" tab).
The left bottom part of the window shows three component tabs. They allow you to select
the event filtering criteria.
List of filtering criteria tabs
• Events
It allows you to select and display only events of one type from the above
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list of recorded events.
• Date
It allows you to select an event filtering time criterion. This tab enables you to
select the start and end date and time of this criterion.
• UAL/NUAL
It allows you to select criteria of the displayed events analogous to the ones specified
for:
• Urgent alarm criteria (paragraph 3.1),
• Non-urgent alarm criteria (paragraph 3.1),
• other criteria (not included in the urgent and non-urgent alarm criteria).
The following two buttons are displayed in the right part of the window:
• "Filter" - it displays events of the type and value such as in the tab on the left.
"OR" - it displays events using the criteria from all tabs.
Figure 33. Event log filter
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7 TECHNICAL SPECIFICATION
7.1 Electrical characteristics of E1/G.703 interface
Parameter
or feature
Parameter value
or feature description
Electrical compatibility
standard
ITU-T G.703
Rated binary bit rate
2.048 Mbit/s ±50 ppm
AIS signal binary bit rate
2.048 Mbit/s ±50 ppm
Input and output impedance
120Ω - symmetric connector
Maximum cable attenuation
coefficient for 1024kHz
frequency
6 dB
Linear code HDB-3
Error rate
≤10
-9
1)
Connector type DB-9
1) at the power level at the receiver input not lower than the value specified in paragraph 7.2
as "receiver sensitivity"
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7.2 Optical interface characteristics
Parameter
or feature
Oznaczenie
Wykonania
Wartość parametru
lub opis cechy
Linear code
TM 76.1-X
MD 76.1-X
5B-6B
Optical signal modulation speed
TM 76.1-X
MD 76.1-X
10.1376 Mbod
TM 76.1-3-X
MD 76.1-3-X
Laser diode 1310 nm
Optical transmitter type
TM 76.1-4-X
MD 76.1-4-X
Laser diode 1550 nm
TM 76.1-5-X
MD 76.1-5-X
Laser diode 1310 nm
TM 76.1-6-X
MD 76.1-6-X
Laser diode 1550 nm
TM 76.1-3-1
MD 76.1-3-1
-15 dBm
TM 76.1-3-2
MD 76.1-3-2
-5 dBm
Level of power optical transmitter
TM 76.1-4-1
MD 76.1-4-1
-5 dBm
TM 76.1-5-1
MD 76.1-5-1
-14 dBm
TM 76.1-5-2
MD 76.1-5-2
-8 dBm
TM 76.1-6-1
MD 76.1-6-1
-14 dBm
TM 76.1-6-2
MD 76.1-6-2
-8 dBm
TM 76.1-3-1
MD 76.1-3-1
-35 dBm
TM 76.1-3-2
MD 76.1-3-2
-36 dBm
Receiver sensitivity
(minimum value for error rate ≤ 10
-9
)
TM 76.1-4-1
MD 76.1-4-1
-35 dBm
TM 76.1-5-1
MD 76.1-5-1
-31 dBm
TM 76.1-5-2
MD 76.1-5-2
-34 dBm
TM 76.1-6-1
MD 76.1-6-1
-31 dBm
TM 76.1-6-2
MD 76.1-6-2
-34 dBm
Types of fiber optic connectors
TM 76.1-X
MD 76.1-X
SC/PC
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E1/G.703 FIBER OPTIC MODEM
OPERATING MANUAL
IOA76-1F 45 May 2009
7.3 Mechanical parameters
Symbol Feature Value
Width 105 mm
Height 36 mm
Depth 185 mm
TM-76.1
Weight 530 g
Digital card Interface card
Width 20.5 mm 20.5 mm
Height 129 mm 129 mm
Depth 146mm 146mm
MD-76.1
Weight 0.16 kg 0.15 kg
7.4 Environmental requirements
7.4.1 Operation
The devices may operate in unevenly heated closed rooms in the following environmental
conditions:
Environmental
Parameter
Allowable
value
Ambient temperature
+5 ÷ +40OC
Air relative humidity
≤ 80% at +20OC
7.4.2 Transport
The devices should be transported in the original packaging in the following conditions:
Environmental
Parameter
Allowable
value
Ambient temperature
-25 ÷ +40OC
Temperature change rate
≤ 10OC/h
Maximum air humidity 95%
Atmospheric pressure
700 ÷ 1060 hPa
Multiple surges
5 ÷ 15 g in time of 10 ms
Page 52
E1/G.703 FIBER OPTIC MODEM
OPERATING MANUAL
IOA76-1F 46 May 2009
7.4.3 Storage
The devices should be stored in closed rooms in the following environmental conditions:
Environmental
Parameter
Allowable
value
Ambient temperature
-25 ÷ +55OC
Humidity 5% up to 90% below +40OC
Vibration
frequency: 10 Hz up to 55 Hz, amplitude: 0.15 mm
duration: 10 cycles in three planes
Degree of contamination typical home or office environment
7.5 Electromagnetic compatibility
The devices comply with the requirements for class B equipment concerning radioelectric
disturbance emissions, set out in PN-EN 55022 standard, provided that they are installed
in accordance with this Manual.
7.6 Power supply
Parameter
or feature
Version
Symbol
Parameter value
or feature description
Rated power supply voltage TM-76.1
0 Hz; 18 ÷ 60 V
Input current at 220 V/AC voltage
TM-76.1
with typical power
supply unit
50 mA
Input current at 18 V/DC voltage TM-76.1 160 mA
Input current at 60 V/DC voltage TM-76.1 50 mA
Input current at 18 V/DC voltage MD-76.1 160 mA
Input current at 60 V/DC voltage MD-76.1 50 mA
Types of connectors TM-76.1
18÷60V DC (screw) dual terminal
connector
Page 53
E1/G.703 FIBER OPTIC MODEM
OPERATING MANUAL
IOA76-1F 47 May 2009
8 COMPLETE PRODUCT
The complete set of the TM-76 desktop product supplied to the customer includes the following
components:
1. TM-76 modem 1 pce.
2. RS-232 cable, DB-9 RJ-45 1 pce.
3. IOA76-1x Operating Manual 1 pce.
4. Guarantee card 1 pce.
for MD-76 rack card:
1. MD-76 modem (digital card + interface card) 1 pce.
2. IOA76-1x Operating Manual 1 pce.
3. Guarantee card 1 pce.
optional equipment for TM-76 modem:
1. POWER SUPPLY TATAREK TYPE 6 WZN 9/15,
IN: 220VAC/ 50HZ/14VA, OUT: 42VDC160MA
In order to connect TM-76 modem to a 230V/AC voltage source, we recommend to use power
supply mentioned in optional equipment list.
Page 54
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Manufacturer:
Lanex S.A.
8 Ceramiczna Street
20-150 Lublin POLAND
phone: +48 81 444-10-11
fax: +48 81 740-35-70
e-mail: info@lanex.pl
web: www.lanex.pl
Service contact:
phone +48 81 443-96-39
Lanex S.A. 2007
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