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The 2408LT is an outdoor fiber optic transmitter for RF signals in the satellite L-Band or wider frequency range. It accepts a single RF input on coaxial cable and provides a single output for optical transmission. Packaged in a compact, standalone enclosure, the 2408LT is ideal for mounting on or near the satellite dish antenna structure. The -WP version features dust and water protection allowing outdoor mounting without a secondary enclosure. A full power RF monitor output provides a convenient means of obtaining peak satellite signal strength, or additional signal distribution.

Gain may be adjusted manually or managed automatically via AGC. With SmartMON™, incoming RF signal strength, LNB current, status of connected 2400PSU-8 power supply and other data are relayed over the fiber output for monitoring through SNMP/VistaLINK® (requires SmartMON™ capable companion fiber receiver). The 2408LT also provides a DC pass through mode for LNB power and comprehensive indicators that provide status information on the input DC power and RF drive level as well as LNB power status.

For GPS applications, 2408LTA13-5V-B50 can be used to power-up GPS antenna with 5V supply and transport GPS signals over fiber. For applications that require 10MHz transport for timing, the 2408T13 – 10MHz-B50 offers an ideal solution when paired with an Evertz 10MHz fiber receiver. For injection of 10MHz into the LNB or BUC, Evertz offers the 2406BIAST-2 dual-channel bias-tee.

Illustrated comparison of 2408LT Series transmitters, L–Band (2408LTxx) vs. 10MHz RF (2408Txx-10MHz) over fiber models.

Features

  • Minimizes coaxial cable length for improved CNR
  • Provides electical isolation, mitigating ground loop and lightning issues
  • CWDM multiplexing options
  • IP65 weatherproof option
  • Wide frequency range for extended L-Band, IF, FM, UHF/VHF, over-the-air DTV and more
  • Protocol-independent design transports all modulation formats
  • 13/18V DC LNB power +22kHz tone
  • LNB current limiting, short circuit protection and current monitoring
  • GPS & 10MHz transport options

Specifications

RF Input

Number of Inputs 1
Connector F-Type (50Ω BNC optional)
Conductor Range 23-18 AWG (0.26-0.82 mm2)
Input Impedance 75Ω (50Ω optional)
Frequency Range 88 – 3000MHz
Return Loss
88 – 500MHz > 11dB
500MHz – 3GHz > 15dB
Input Power Range -10dBm to -60dBm
Manual Gain Range +2 to +30dB in 2dB steps
AGC Hold Range -8 to -38dBm ±2dBm
Input IP3 +10dBm
IMD < -55dBc at -15dB input and min.gain
LNB Power
Voltage 13V DC, 18V DC, off (selectable)
Current 500mA
Protection Short circuit, current limited
LO Control 22kHz on/off (selectable)

RF Monitor Output

Number of Outputs 1
Connector F-Type (50Ω BNC optional)
Conductor Range 23-18 AWG (0.26-0.82 mm2)
Output Impedance 75Ω (50Ω optional)
Return Loss > 15dB
Frequency Range
Output Level Within -2dB of input signal

Optical Output

Number of Outputs 1
Connector Female FC/APC
Operating Wavelength
Standard 1310nm DFB
CWDM 1270-1610nm
Output Power
Standard 1310nm +2dBm
CWDM +2dBm

RF System Performance 2408LT+7708LRA pair

Flatness
950 – 2150MHz ±1.5dB
88MHz – 3GHz ±2.0dB
±0.25dB on 36MHz BW to 2.3GHz
Gain Variation over Temperature ±2dB (from -20°C to +70°C)

10MHz Performance

2408T13 – 10MHz + 7708R – 10MHz pair
Manual Gain Range -5 to +10dB
Input Power Range +10 to -40dBm
OIP3 +29dB
Harmonic Rejection +60dB

DC Input

Voltage +18V DC nominal, +11 to +20V
DC range (> LNB min input voltage required when powering an LNB)
Power 2 watts max excluding LNB Power
Connector F-Type
Conductor Range 23-18 AWG (0.26-0.82 mm2)

Physical

Dimensions with flanges
5.4"L x 2.4"W x 1.2"H
(138mm L x 61mm W x 31mm H)

Compliance

Laser Safety Class 1 laser product, complies with 24 CFR 1040.10 and 1040.11 IEC 60825-1
Safety CSA listed to CAN/CSA 60065-03 UL Std No. 60065-2006 IEC 60065:2001 + Amd 1:2005, IEC 62368-1:2014 EN 62368-1:2014 + A11:2007, CAN/CSA-C22.2 No. 62368-1:14, UL 62368-1 2nd Ed.
EMI/RFI Complies with FCC Part 15, Subpart B EN 55022:1998 ICES-003

Environmental

Temperature -30 to 75°C
Dust/Water Protection IP65 (-WP version only)

Ordering Information

2408LT13 L-Band Standalone Fiber Transmitter with VistaLINK and SmartMON, FC/APC fiber connectors
2408T13 – 10MHz-B50 Standalone 10MHz RF over Fiber Transmitter, 1310nm DFB laser, 50Ω BNC connectors
2408LTA13‑5V‑B50 Standalone L-Band fiber transmitter, 1310nm DFB laser, 5V DC powering for GPS antenna. 50Ω BNC Connectors
2408LTxx 2408LTxx L-Band Standalone Fiber Transmitter with SmartMON, CWDM DFB laser, FC/APC fiber connectors (Wavelength 27 to 61)
2408Txx‑10MHz‑B50 Standalone 10MHz RF over Fiber Transmitter, CWDM DFB laser, FC/APC, 50Ω BNC connectors

Ordering Options

+PS 18V DC external power supply, 100 – 240V AC auto-ranging input, indoor mounting with F-Type connector
-WP Weatherproof
Connector And Impedance Options
Notes Standard RF connectors are 75Ω F-Type
-B50 50Ω BNC connectors
-S50 50Ω SMA connectors