FiberLabs OTM-1550L Manuel utilisateur
Technical passport / OTM-1550L
OTM-1550L
Intelligent Direct Modulated
Optical Transmitter Operating
Manual
Technical passport / OTM-1550
12-2016-v4
Table of Contents
Table of Contents ...................................................................................................... - 1 -
1. Overview............................................................................................................... - 2 -
1.1 About This Manual ...................................................................................... - 2 -
1.2 Product Description ..................................................................................... - 2 -
1.3 Product Applications.................................................................................... - 3 -
2. Technique Parameters ........................................................................................... - 4 -
3. Panel Interface and Menu System Description..................................................... - 5 -
3.1 Front Panel................................................................................................... - 5 -
3.1.1 Indicator Description ......................................................................... - 5 -
3.2 Rear Panel .................................................................................................... - 6 -
3.3 Power Module.............................................................................................. - 6 -
3.3.1 220V Power Module .......................................................................... - 6 -
3.4 Menu Operation ........................................................................................... - 7 -
3.4.1 Main Menu......................................................................................... - 7 -
3.4.2 Display Menu..................................................................................... - 8 -
3.4.3 Set Menu .......................................................................................... - 10 -
3.4.4 Alarm Menu ..................................................................................... - 11 -
4. Installing the OTM-1550L Optical Transmitter.................................................. - 12 -
4.1 Receiving and Inspecting........................................................................... - 12 -
4.2 Precautions................................................................................................. - 12 -
4.3 Mounting OTM-1550L .............................................................................. - 12 -
4.3.1 Mounting the OTM-1550L in the Rack ........................................... - 12 -
4.3.2 Connecting the RF Cables ............................................................... - 13 -
4.3.3 Connecting the Optical Fiber Cables ............................................... - 13 -
4.3.4 Connecting the Ethernet Cable ........................................................ - 13 -
4.3.5 Connecting Power............................................................................ - 14 -
5. Communication Setup......................................................................................... - 14 -
5.1 RS232 Communication Interface Description........................................... - 14 -
5.2 Set up the Hyper Terminal ......................................................................... - 14 -
5.3 Operating Parameters Configuration ......................................................... - 16 -
5.4 Remote Monitoring: SNMP....................................................................... - 20 -
6. Maintenance and Troubleshooting...................................................................... - 21 -
6.1 Cleaning Fiber Optic Connectors............................................................... - 21 -
6.1.1 Cleaning Patch Cord or Pigtail Fiber Optical Connectors............... - 21 -
6.2 Troubleshooting ......................................................................................... - 22 -
6.3 After-sales Service Description.................................................................. - 22 -
6.4 Disclaimer.................................................................................................. - 22 -
Technical passport / OTM-1550
12-2016-v4
1. Overview
1.1 About This Manual
This instruction manual is a complete guide to install and operate the (1RU)
OTM-1550L optical transmitter. Please read the entire manual before beginning
installation.
This manual applies to OTM-1550L optical transmitter.
• Chapter 1 gives general information about the OTM-1550L optical transmitter.
• Chapter 2 describes the complete technical specifications of OTM-1550L.
• Chapter 3 describes the front/rear panel interfaces and menu system.
• Chapter 4 tells you how to install OTM-1550L optical transmitter.
• Chapter 5 tells you the communication setting of OTM-1550L.
• Chapter 6 describes maintenance and what to do in the event of problems.
1.2 Product Description
OTM-1550L intelligent directly modulated optical transmitter is mainly used in
1550nm optical fiber transmission system. Adopt advanced electronic dispersion
compensation technology, accurately compensate according to the actual transmission
distance by 1km stepping. The maximum compensated distance up to 50km.
OTM-1550L intelligent directly modulated optical transmitter is the most
important equipment to construct the CATV network. It mainly used for the
value-added services of TV image signal, digital television signal, telephone voice
signal and data (or compressed data) signal. By built-in WDM, multiplex the inter-cut
optical signal and the main optical signal then output. After setting required optical
difference, the perfect adjustable optical attenuation function can automatic control
the inserted optical signal according to the main optical signal, realize inter-cut system
full automatic adjustment. Provide high quality low cost solution for all-optical relay
1550 optical fiber CATV system, and local value-added services inter-cut.
Characteristics:
1. Patent pre-distortion circuit.
2. The optical fiber distance is adjustable according to the actual use condition by
1km stepping.
3. OTM-1550LⅡ: Built-in WDM, multiplex the inserted optical signal and the main
optical signal then output.
4. OTM-1550L Ⅲ: Built-in WDM and adjustable attenuator.
Technical passport / OTM-1550
12-2016-v4
Model Selection:
OTM-1550L-I: standard 1550nm directly modulated optical transmitter, the default
optical output power is 10mW, and the optical output wavelength can choose ITU
standard wavelength.
OTM-1550L-II: on the base of OTM-1550L-I, add inter-cut function and built-in
WDM. The WDM specification please specify when ordering.
OTM-1550L-III: on the base of OTM-1550L-II, add VOA Variable Optical
Attenuator, can adjust the signal optical power intensity by the menu options on the
front panel.
Block Diagram
OTM-1550L directly modulated optical transmitter block diagram
OTM-1550Linter-cut part block diagram
1.3 Product Applications
• 1550nm Optical fiber transmission system
• Construct the CATV network
• Local value-added services inter-cut
Technical passport / OTM-1550
12-2016-v4
2. Technique Parameters
Item Unit Technique Parameters
Output optical power mW 10
Optical wavelength nm 1550±10 (have to be ITU wavelength when
with inter-cut function)
Dispersion compensation
distance Km ≤50
Laser type DFB laser
Optical modulation mode Direct optical intensity modulation
Optical connector type FC/APC or SC/APC
Frequency range MHz 47-862/1003
RF input level dBuV 75-85
Flatness in band dB ±0.75
RF input impedance Ω75
Input return loss dB ≥16
C/CSO dB ≥60
C/CTB dB ≥65
C/N dB ≥51
25Km optical fiber, 0dB
received
AGC control range dB ±5
MGC control range dB 0-20
Supply voltage V AC 110V-250V (50Hz)
Consumption W 30
Operating temperature ℃0 -- 45
Storage temperature ℃-20 -- +65
Relative humidity % Max 95% no condensation
Dimension mm 483（L）×380（W）×44（H）
Special instructions: The performance parameters of this manual according to the
measuring method of GY/T 143-2000 <Specifications and methods of measurement
on AM optical transmitter and receiver used in CATV systems>, and tested under the
specified test conditions.
Technical passport / OTM-1550
12-2016-v4
3. Panel Interface and Menu System Description
3.1 Front Panel
Front panel schematic diagram
1 Power indicator 2 Running indicator 3 Laser indicator
4 RF input indicator 5 LCD 6 ESC key
7 UP key 8 DOWN key 9 Enter key
10 RF output test port 11 Laser switch
11
3.1.1 Indicator Description
Power indicator (POWER) Power on LED green
Running indicator (RUN) Run normally LED flash green
Laser OFF LED red
Laser indicator Laser ON LED green
No output or exceed the normal range LED flash red
RF input indicator (RF) Normal LED green
Technical passport / OTM-1550
12-2016-v4
3.2 Rear Panel
Rear Panel schematic diagram
No. Name Remark
1 Fan
2 RF input
3 Local RF input Generally reserved
4 Ground stud Used for the connection of device and ground wire
5 Optical input Inserted optical signal input (without inter-cut function, no this port)
6 Optical signal
output
This interface is the optical signal output port of the device (If select
inter-cut function, this port is mixed output)
7 RS232 interface Used for configuring the network management parameters.
8 LAN interface Correspond to IEEE802.3 10Base-T, used for network management.
9 Switching power
supply Hot plug
9
8
9
5 6 7
2 3 41
3.3 Power Module
3.3.1 220V Power Module
1 Mounting screws 2 220V/110V power outlet 3 Fuse
4 Power switch
Technical passport / OTM-1550
12-2016-v4
3.4 Menu Operation
3.4.1 Main Menu
In: 0.0 Out:10.3
dBuV dBm Enter
1. Disp Parameters
2.Set Parameters
3.Alarm Status
ESC
Displayed parameters Comments
Boot display
1.Disp Parameters Menu one: Display parameters
2.Set Parameters Menu two: Set parameters
3.Alarm Status Menu three: Alarm status
Technical passport / OTM-1550
12-2016-v4
3.4.2 Display Menu
1.Disp Parameters Enter
Laser Power: xx.xdBm
Laser Bais: xx.xmA
Laser Temp: xx.x℃
Tec Current: -x.xxA
RF Chan NO: 1
ESC
IP : xxx.xxx.xxx.xxx
Msk: xxx.xxx.xxx.xxx
GTW: xxx.xxx.xxx.xxx
Mac: XX-XX-XX-XX-XX-XX
SofteWare Ver: VX.X
RF Control Mode: AGC
AGC Ref: xdB
Laser RF: x dBuV
RF Ctrl Mode: MGC
MGC ATT: XdB
Wave Length: xxxx.xnm
+5V Read: x.xxV
BOX Temp: xx.x℃
S/N: xxxx.xx.xx
-5V Read: -x.xxV
+24V Read: xx.xxV
Input Power: -xx.xdBm
OP After ATT: xx.xdBm
Technical passport / OTM-1550
12-2016-v4
Displayed parameters Comments
Laser Power Laser output optical power
OPAfter ATT Optical power after attenuation
(without inter-cut function, no this menu)
Input Power External optical signal power
(without inter-cut function, no this menu)
Laser Bais Laser bias current
Laser Temp Laser temperature
Tec Current Cooler current
RF Chan NO Channel number
Laser RF Laser RF power
RF Ctrl Mode RF control mode
MGC ATT MGC attenuation (in MGC mode)
AGC Ref AGC deviator (in AGC mode)
Wave Length Wavelength
+5V Read +5V monitoring voltage
-5V Read -5V monitoring voltage
+24V Read +24V monitoring voltage
S/N Serial number
BOX Temp Temperature
IP IP
Msk Subnet mask
GTW Gateway
Mac MAC address
SofteWare Ver Version number
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