Product ManualManual

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, 2408LT13-5V-B50 can be used to power-up GPS antenna with 5V supply and transport GPS signals over fiber when combined with 2406LR-5V-B50 receiver.

Features
  • Directly mount to antenna structure or other outdoor locations
  • -WP Weatherproof version - does not require secondary enclosure
  • Wide frequency range for extended L-Band, over the air DTV and other signals
  • Protocol-independent design - transports all modulation formats
  • DC pass-through and 13V DC modes for LNB power
  • LNB current limit & short circuit protection
  • LNB current monitoring
  • Minimizes coaxial cable length for superior CNR performance
  • 22kHz tone on/off for LNB local oscillator control
  • RF monitor output for signal peaking and signal distribution
  • Manually adjustable or AGC gain modes
  • Tri-color LED status indicators for Link RF drive strength, LNB voltage and DC input voltage level
  • SmartMON™ capability provides remote status monitoring via SNMP without a separate data connection
  • Fiber link provides electrical isolation between antenna and facility mitigating ground loop and lightning issues
  • GPS antenna systems

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Specifications

RF Input
Number of Inputs1
ConnectorF-Type (50Ω BNC optional)
Conductor Range23-18 AWG (0.26-0.82 mm2)
Input Impedance75Ω (50Ω optional)
Frequency Range88 – 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
VoltageDC input-0.5V DC, 13.5V DC, off (selectable)
Current500mA
ProtectionShort circuit, current limited
LO Control22kHz on/off (selectable)
RF Monitor Output
Number of Outputs1
ConnectorF-Type (50Ω BNC optional)
Conductor Range23-18 AWG (0.26-0.82 mm2)
Output Impedance75Ω (50Ω optional)
Return Loss> 15dB
Frequency Range
Output LevelWithin -2dB of input signal
Optical Output
Number of Outputs1
ConnectorFemale FC/APC
Operating Wavelength
Standard1310nm DFB
CWDM1270-1610nm
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 Performance2408T13 – 10MHz + 7708R – 10MHz pair
Manual Gain Range-5 to +10dB
Input Power Range+10 to -40dBm
OIP3+29dB
Harmonic Rejection+60dB
DC Input
Voltage
2408LT13-5V-B504.8 – 5.2V DC (range must be supplied by a regulated 5V source)
Other 2408LT models+18V DC nominal, +11 to +20V
DC range (> LNB min input voltage required when powering an LNB)
Power2 watts max excluding LNB Power
ConnectorF-Type
Conductor Range23-18 AWG (0.26-0.82 mm2)
Physical
Dimensionswith flanges
5.4"L x 2.4"W x 1.2"H
(138mm L x 61mm W x 31mm H)
Compliance
Laser SafetyClass 1 laser product, complies with 24 CFR 1040.10 and 1040.11 IEC 60825-1
EMI/RFIComplies with FCC part 15, Class A EU EMC directive
SafetyCSA Listed to CSA C22.2 No. 60065-03, UL 60065-03 IEC 60065 - (2001-12) 7th edition
Environmental
Temperature-30 to 75°C
Dust/Water ProtectionIP65 (-WP version only)

Ordering Information

2408LT13L-Band/Wideband standalone fiber transmitter, SmartMON™, 1310nm DFB laser
2408T13– 10MHz 10MHz standalone fiber transmitter, 1310nm DFB laser
2408LT13– 5V L-Band/Wideband standalone fiber transmitter, 1310nm DFB laser, 5V DC ±0.2V DC power input
2408LTxxL-Band standalone fiber transmitter, SmartMON™, CWDM DFB laser
2408Txx-10MHz10MHz standalone fiber transmitter, CWDM DFB laser
Ordering Options
+PSExternal DC power supply brick, 100 – 240V AC auto-ranging input, indoor mounting with F-Type connector
-WPWeatherproof option
Connector and Impedence Options
Notesstandard RF connectors are 75Ω F-Type
-B5050Ω BNC connector
Patch Cable
CB-FP1M-SCPCSingle mode fiber cable, 1m, SC/PC male termination
CB-FP1M-STPCSingle mode fiber cable, 1m, ST/PC male termination
CB-FP5M-SCPCSingle mode fiber cable, 5m, SC/PC male termination
CB-FP5M-STPCSingle mode fiber cable, 5m, ST/PC male termination
CB-FP10M-SCPCSingle mode fiber cable, 10m, SC/PC male termination
CB-FP10M-STPCSingle mode fiber cable, 10m, ST/PC male termination