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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.

Specifications

RF Input
Number of Inputs 1
Connector BNC per IEC 61169-8 Annex A (F-Type and SMA Optional)
Input Impedance 75Ω (50Ω Optional)
Frequency Range 850MHz-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
Voltage 13V DC, 18V DC, off (selectable)
Current 400mA
Protection Short Circuit, current limited
LO Control 22kHz on/off (selectable)

RF Monitor Output
Number of Outputs 1
Connector BNC per IEC 61169-8 Annex A (F-Type and SMA Optional)
Output Impedance 75Ω (50Ω Optional)
Return Loss > 15dB
Frequency Range 850MHz to 3000MHz
Output Level Within -2.0dB of input signal

Optical Output
Number of Outputs 1
Connector Female FC/UPC, ST/UPC, FC/UPC, SC/APC, FC/APC
Operating Wavelength 1310nm DFB
Output Power +2dBm

RF System Performance

7706LT13+7706LRA pair
Frequency Response
950MHz - 2150MHz ±1.5dB
850MHz - 3GHz ±2dB
36MHz BW to 2.3GHz ±0.25dB

Electrical
Voltage +12V DC
Power 6 watts max, excluding LNB Power

Physical
Number of slots 1

Compliance
Laser safety Class 1 laser product
Complies with 24 CFR 1040.10 and 1040.11
IEC 60825-1
EMI/RFI Complies with FCC Part 15, Class A
EU EMC directive

Ordering Information

7706LT13 Wideband RF Fiber Transmitter, 1310nm DFB laser
7706LT13‑B50 Wideband RF Fiber Transmitter, 1310nm DFB laser, 50Ω BNC Connectors
7706LT13‑S50 Wideband RF Fiber Transmitter, 1310nm DFB laser, 50Ω SMA Connectors

Ordering Options
Notes • 75Ω I/O Impedance ships standard
• Rear plate and fiber connector must be specified at time of order - eg: [model]+SC+3RU
Connector Suffix
+SC SC/PC
+ST ST/PC
+FC FC/PC
+AP+SC SC/APC (Angle Polished)
+AP+FC FC/APC (Angle Polished)
+F75 75Ω F-Type
Rear Plate Suffix
+1RU 1RU rear plate for use with 7701FR Multiframe
+SA Standalone Enclosure Rear Plate
+3RU 3RU rear plate for use with 350FR, 7700FR-C or 7800FR Multiframes

Enclosures
350FR Portable Multiframe which holds 7 single slot modules
7700FR-C 3RU Multiframe which holds 15 single slot modules
7800FR 3RU Multiframe which holds 15 single slot modules
7701FR 1RU Multiframe which holds 3 single slot modules
S7701FR 7700 Series Standalone Enclosure