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CATV RF Over Fiber



RF Over Fiber Isolator

Tech Specs
Application Drawing

QuestTel designs and manufactures high-performance and reliable fiber optics products for military and high security signal transport applications. The L-RF/TX-RX-ISTR is typically used to prevent unwanted transmission in the return direction. QuestTel's RF Over Fiber Isolator featured in this application provides high security best suited for advanced military and security applications.

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RF Over Fiber Isolator

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    • Able to transport optical signals in either 1310nm or optional 1550nm
    • Supports broadband range 45-750/862/1003 MHz
    • Automatic Gain Control (AGC) manages RF level with no adjustment needed
    • 19″1U standard rack mount
    • Receiver - 19″1U Rack or Portable (optional)
    • Ethernet interface for network management monitoring (Optional)
    • Professional RF attenuation chips, good RF attenuation and equilibrium linear, high precision
Tech Specs
 RF Optical Transmitter  
 Optical output power  2 mW (Optional 4mW or 6mW)
 Optical Wavelength  1310nm
 Flatness Range  45-750/862/1003 MHz
 Equivalent Noise Intensity  < -160 dB/Hz
 Extinction Ratio  >20 dB XP
 Line Width:  < 1 MHz   FWHM
 Return Loss  >55 dB
 Optical modulation mode  Direct optical intensity modulation
 Optical connector type  SC/APC
 RF Parameters  
 RF Power Level  11-29 dBmV AGC Managed
 Flatness  <± 0.75    45 - 862 MHz
 CNR  ≥ 51 dB @ 10km fiber
 SBC Restrain  >17 dBm
 C/CTB  ≥ 65 dB
 C/CSO  ≥ 60 dB
 RF Connector  F-Type
 General Parameters  
 Dimensions  483 (L)×380 (W) ×44 (H) mm
 Power supply voltage AC 110V-250V (50Hz)
 Consumption  30 W
 Operating temperature   0°C ~ 45°C
 Storage temperature  -20°C ~ +65°C
 Relative humidity  Max 95% no condensation
 Weight  2.6 kg
 NMS GUI  Optional


L-RF-4mW-TX RF Over Fiber  Transmitter Pdf User Guide 


L-RF-19R-RX CATV RF Optical Receiver Guide  Receiver Pdf User Guide


RF Optical Receiver  
 Wavelength  1310 - 1600 nm
 Receive Optical Power  -9 ~ +2 dBm
 Optical Return Loss  >45 dB
 Optical Connector Type  SC/APC / (FC/APC) or specified by the user
 Fiber Type  Single Mode / Multi Mode - Optional
 Link Parameters  
 Transmit Channel  PAL-D/60CH     NTSC/80CH
 C/N ≥ 51 (-2dBm Input dB)
 C/CTB  ≥ 65 dB
  C/CSO  ≥ 60 dB
 RF Parameters  
 Frequency Range  45 - 862 /1003 MHz
 Flatness in Band  ±0.75 dB
 Rated Output Level  ≥ 108 dBμV
 Max Output Level  ≥ 114 dBμV
 Output Return Loss  ≥14 dB
 Output Impedance  75 Ω
 Electrical control EQ range  0 - 10 dB
 Electrical control ATT range  0 - 20 dB
 General Parameters  
 Network Managment  RJ45 & RS232      Supports I.E. & SNMP
 Power Supply  90~265 V AC   48V DC 
 Power Consumption  ≤ 30 VA
 Operating Temperature  -40~60°C
 Storage Temperature  -40~65°C
 Relative Humidity  Max 95% no condensation
 Dimension  483 x 345 x 44 mm
 NMS GUI  Optional


Disclaimer: Products, specifications and data are subject to change without notice, to improve reliability, function, design or otherwise.

QuestTel shall have no liability for any error or damage of any kind resulting from the use of this document.
Application Drawing RF Over Fiber Isolator 's Application Drawing
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