PBN

LT1550

1550nm Direct Mod Transmitter with or without Build in EDFA

AOCM3900 datasheet LT1550 Datasheet

AOCM3900 datasheet LT1550 Manual

 

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LT1550

About the Product

The optical transmitter model LT1550 employs a high performance thermally stabilised, DFB, low-chirp, isolated laser to transmit CATV signals. Operating on a specific optical wavelength in the ITU-DWDM grid, the unit suits single mode optical fibre networks with or without dense wavelength division multiplexing (DWDM).

The unit can optionally be equipped with an integrated erbium doped fibre amplifier (EDFA) for fibre to the home (FTTH) applications.

Designed for high channel loading and superior performance, this transmitter can achieve distances of up to 10 km on standard fibres and up to 30 km on 1550 nm dispersion shifted fibres.

LT1550 optical transmitters incorporate a comprehensive alarm and status monitoring system of all laser operating parameters such as DC Laser Bias Current, Cooler Current and Optical Output Power.

The data is available simultaneously on a front panel LCD display, on a USB connector, and optionally via a HTTP/SNMP network module.
 

  • Analogue InGaAsP DFB low-chirp laser with optical isolator and thermoelectric cooler.
  • Handles legacy analogue cable television as well as digital DVB-T or DVB-C formats.
  • 45 MHz to 1000 MHz forward path RF amplifier with automatic gain control (AGC) for a constant optical modulation index (OMI).
  • Automatic Peltier thermo-cooler control and automatic laser power control for constant laser temperature and optical output.
 
  • Option for integrated Erbium Doped Fibre Amplifier (EDFA) to achieve the very high optical power levels as required for FTTH systems.
  • Self-contained 19” sub rack 1 RU with integrated universal mains power supply.
  • Backlit LCD display provides status monitoring and control.
  • Front panel mounted USB craft port with optional Ethernet port on the rear panel for SNMP/HTTP network management.
Optical Performance
Optical wavelength One ITU grid channel in the 1550 nm range

Optical output power options

 

6, 8, 10, 20, 40, 80, 100, 120, 160, 200, 250, 320, 400 mW

Optical return loss   > 60 dB
Optical connectors SC/APC, E2000/APC, FC/APC
RIN < -155 dB/Hz
RF Performance  
RF bandwidth 45 MHz to 1000 MHz
RF flatness ± 0.75 dB
RF gain control  -15 dB to +5 dB
RF impedance  75 Ω
RF test point relative to
RF input port

-20 dB ± 1 dB

RF input connectors SCTE F-type
RF test points Mini-SMB
Alarms and laser status Front-panel LEDs, SNMP Traps
General
Power 90 Vac to 264 Vac, 50 Hz to 60 Hz
Operating temperature 0 °C to 45 °C
Dimensions (H x W x D) 44 x 483 x 360 mm
Ship size (H x W x D)  120 x 510 x 490 mm
Weight 5 kg
Ship weight 5.5 kg
RF connectors SCTE F-type
Craft port USB on front panel
Network port (option SNMP) 10BaseT with HTTP and SNMP
Local system management Via front panel display and keyboard

 

Remote management(option SNMP)

via integrated web server (HTTP),via NMS3-NetCraft field tool (SNMP) (free inclusion with SNMP option),via NMS3-Enterprise-II network operating software (SNMP)

Link Performance (1)(for 6, 8 or 10 mW)
64 PAL B/G, D channels CNR      > 53 dB
CSO      > 56 dB
CTB      > 62 dB
42 CENELEC channels (as per EN50083-3) CNR      > 53 dB
CSO      > 55 dB
CTB       > 61 dB

79 NTSC CW channels + Digital
 

CNR      > 54 dB
CSO      > 56 dB
CTB       > 61 dB
Link Performance(1) (for 20, 40, 80, 100, 120, 160, 200, 250, 320, 400 mW)
64 PAL B/G, D channels CNR      > 52 dB
CSO      > 56 dB
CTB       > 62 dB
42 CENELEC channels (as per EN50083-3) CNR      > 52 dB
CSO      > 55 dB
CTB       > 61 dB

79 NTSC CW channels + Digital

CNR      > 53 dB
CSO      > 56 dB
CTB       > 61 dB

Note:

(1) This link performance is measured at 0 dBm optical input, 1550nm 10 km SMF and 4% OMI for 45~870 MHz.

Preferred Models for System Planning

LT1550-006-1-33-S-M-xx
Laser transmitter 45~1000MHz 1550nm 6mW 8dBm SC/APC 90~260Vac SNMP
LT1550-006-2-33-S-M-xx
Laser transmitter 45~1000MHz 1550nm 6mW 2x4dBm SC/APC 90~260Vac SNMP
LT1550-008-1-33-S-M-xx
Laser transmitter 45~1000MHz 1550nm 8mW 9dBm SC/APC 90~260Vac SNMP
LT1550-010-1-33-S-M-xx
Laser transmitter 45~1000MHz 1550nm 10mW 10dBm SC/APC 90~260Vac SNMP
LT1550-020-1-33-S-M-xx
Laser transmitter 45~1000MHz 1550nm 20mW 13dBm SC/APC 90~260Vac SNMP
LT1550-040-1-33-S-M-xx
Laser transmitter 45~1000MHz 1550nm 40mW 16dBm SC/APC 90~260Vac SNMP
LT1550-040-2-33-S-M-xx
Laser transmitter 45~1000MHz 1550nm 40mW 2x13dBm SC/APC 90~260Vac SNMP
LT1550-080-2-33-S-M-xx
Laser transmitter 45~1000MHz 1550nm 80mW 2x16dBm SC/APC 90~260Vac SNMP
LT1550-100-2-33-S-M-xx
Laser transmitter 45~1000MHz 1550nm 100mW 2x17dBm SC/APC 90~260Vac SNMP
LT1550-160-4-33-S-M-xx
Laser transmitter 45~1000MHz 1550nm 160mW 4x16dBm SC/APC 90~260Vac SNMP
LT1550-200-4-33-S-M-xx
Laser transmitter 45~1000MHz 1550nm 200mW 4x17dBm SC/APC 90~260Vac SNMP
LT1550-200-5-33-S-M-xx
Laser transmitter 45~1000MHz 1550nm 200mW 5x16dBm SC/APC 90~260Vac SNMP
LT1550-250-6-33-S-M-xx
Laser transmitter 45~1000MHz 1550nm 250mW 6x16dBm SC/APC 90~260Vac SNMP
LT1550-250-8-33-S-M-xx
Laser transmitter 45~1000MHz 1550nm 250mW 8x15dBm SC/APC 90~260Vac SNMP
LT1550-320-8-33-S-M-xx
Laser transmitter 45~1000MHz 1550nm 320mW 8x16dBm SC/APC 90~260Vac SNMP
LT1550-400-8-33-S-M-xx
Laser transmitter 45~1000MHz 1550nm 400mW 8x17dBm SC/APC 90~260Vac SNMP
-xx: Power Cable Coder, -EU (Power Cable for Europe) is the default power cable. If you need a power cable for different regions, please add it in your order.
LT1550-[U-V]-[W]-[X]-[Y]-[Z]
Options:  
U-V Optical output power (mW) and number of optical outputs (1)
006-1 6 mW, one optical output (1 x 8 dBm)
006-2 6 mW, two optical outputs (2 x 4.7 dBm)
008-1 8 mW, one optical output (1 x 9 dBm)
010-1 10 mW, one optical output (1 x 10 dBm)
020-1 20 mW, one optical output (1 x 13 dBm)
040-1 40 mW, one optical output (1 x 16 dBm)
040-2 40 mW, two optical outputs (2 x 13 dBm)
080-2 80 mW, two optical outputs (2 x 16 dBm)
100-2 100 mW, two optical outputs (2 x 17 dBm)
160-4 160 mW, four optical outputs (4 x 16 dBm)
200-4 200 mW, four optical outputs (4 x 17 dBm)
200-5 200 mW, five optical outputs (5 x 16 dBm)
250-6 250 mW, six optical outputs (6 x 16 dBm)
250-8 250 mW, eight optical outputs (8 x 15 dBm)
320-8 320 mW, eight optical outputs (8 x 16 dBm)
400-8 400 mW, eight optical outputs (8 x 17 dBm)
W ITU grid channel (Optical wavelength) (2)
21 192.1 THz (1560.61 nm)
23 192.3 THz (1558.98 nm)
... ...
31 193.1 THz (1552.52 nm)
33 193.3 THz (1550.92 nm) (3)
34 193.4 THz (1550.12 nm)
35 193.5 THz (1549.32 nm)
X Optical connectors
SC SC/APC optical connector
E E2000/APC optical connector
FC FC/APC optical connector (narrow key)
Y Monitoring and Management
U USB port only (4)
M USB port and Ethernet port for SNMP/HTTP network monitoring.
Z Power Cable (5)
EU Power Cable for Europe (not for use in UK)
CN Power Cable for China
CH Power Cable for Switzerland
US Power Cable for USA
UK Power Cable for UK
AU Power Cable for Australia
(1)In cable television applications no more than 50 mW (17 dBm) launch level per fibre line should be planned to avoid excessive Stimulated Brillouin Scattering (SBS) in the connected fibres. Back-scatter can significantly reduce CNR and CSO performance. Hence the models with 80, 100, 120, 160, 200, 250, 320 and 400 mW power output should be ordered with an appropriate integrated optical splitter, keeping the power per port at a more manageable and safe level.
(2)Not all wavelengths may be available at time of order. Order the default channel 33 (1550.92 nm) for fastest delivery and easy availability of spares. Contact PBN for details if a specific wavelength is required.
(3) Default channel if nothing else specified.
(4) Units without SNMP option only available to special production orders. Minimum order volumes apply.
(5) PC-EU (Power Cable for Europe) is the default power cable. If you need a power cable for different regions, please add it in your order.
  • LT1550