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7706LT

Wideband RF Fiber Transmitter

Product ManualManual
  • New

The 7706LT is a fiber optic transmitter for RF signals in the extended L-Band or wider frequency range. It accepts a single RF input on coaxial cable and provides a single output for optical transmission. An 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. 13/17V DC adjustable LNB power with 22kHz tone is also provided.

Features
  • Extended frequency response for extended L-Band and other signals
  • Protocol independent design - transports all modulation formats
  • LNB power with selectable 13/17V DC
  • LNB current limit & short circuit protection
  • 22kHz tone on/off for LNB local oscillator control
  • RF monitor output for signal peaking and signal distribution
  • Manual gain and AGC modes for tuning optimal CNR performance
  • Fiber link provides electrical isolation between antenna and facility, mitigating ground loop and lightning issues
  • The 7706LT occupies one card slot and can be housed in the 1RU 7801FR frame which holds up to four single or two dual slot modules, the 3RU 7800FR frame which has a 15 slot capacity, the portable 3RU 350FR frame which has a 7 slot capacity, or a standalone enclosure which holds a single module.
Block DiagramBlock Diagram

Specifications

RF Input
Number of Inputs1
ConnectorBNC per IEC 61169-8 Annex A (F-Type and SMA Optional)
Input Impedance75Ω (50Ω Optional)
Frequency Range850MHz-3000MHz
Return Loss
850MHz - 2.3GHz> 14dB
2.3GHz - 3GHz> 12dB
Input Power Range-10dBm to -60dBm
AGC Gain Range-10 to +30dB, adjustable
IMD< -55dBc at -15dBm input and 0dB gain
Input IP3+10dBm
LNB Power
Voltage13V DC, 18V DC, off (selectable)
Current400mA
ProtectionShort Circuit, current limited
LO Control22kHz on/off (selectable)
RF Monitor Output
Number of Outputs1
ConnectorBNC per IEC 61169-8 Annex A (F-Type and SMA Optional)
Output Impedance75Ω (50Ω Optional)
Return Loss> 15dB
Frequency Range850MHz to 3000MHz
Output LevelWithin -2.0dB of input signal
Optical Output
Number of Outputs1
ConnectorFemale FC/UPC, ST/UPC, FC/UPC, SC/APC, FC/APC
Operating Wavelength1310nm DFB
Output Power+2dBm
RF System Performance7706LT13+7706LRA pair
Frequency Response
950MHz - 2150MHz±1.5dB
850MHz - 3GHz±2dB
36MHz BW to 2.3GHz±0.25dB
Electrical
Voltage+12V DC
Power6 watts max, excluding LNB Power
Physical
Number of slots1
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

Ordering Information

7706LT13Wideband RF Fiber Transmitter, 1310nm DFB laser
7706LT13-B50Wideband RF Fiber Transmitter, 1310nm DFB laser, 50Ω BNC Connectors
7706LT13-S50Wideband RF Fiber Transmitter, 1310nm DFB laser, 50Ω SMA Connectors
Ordering Options
Notes75Ω I/O Impedance ships standard
Rear plate and fiber connector must be specified at time of order - eg: [model]+SC+3RU
Connector Suffix
+SCSC/PC
+STST/PC
+FCFC/PC
+AP+SCSC/APC (Angle Polished)
+AP+FCFC/APC (Angle Polished)
+F7575Ω F-Type
Rear Plate Suffix
+1RU1RU rear plate for use with 7701FR Multiframe
+SAStandalone Enclosure Rear Plate
+3RU3RU rear plate for use with 350FR, 7700FR-C or 7800FR Multiframes
Enclosures
350FRPortable Multiframe which holds 7 single slot modules
7700FR-C3RU Multiframe which holds 15 single slot modules
7800FR3RU Multiframe which holds 15 single slot modules
7701FR1RU Multiframe which holds 3 single slot modules
S7701FR7700 Series Standalone Enclosure
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