Point2point fibre optic links

Point2point fibre optic links

Description

Point2point fibre optic links

Point2point links are fixed gain, analogue signal transmission systems – solving electrical interference and signal attenuation problems in signal monitoring and distribution. Depending on the frequency range, Point2point links use either intensity modulation or 14-bit digital modulation to convert analogue signals for transmission over fibre.

Frequency ranges:

  • High performance analogue system
  • Solves the problem of electrical interference
  • High voltage isolation

Key Features
  • Wide, flat frequency response
  • Electrically shielded modules
  • All modulation formats
  • Wide dynamic range
  • Flat bandpass response
  • Single mode or multimode
  • Up to 36 hours battery life
Key Benefits
  • Immunity to electrical interference
  • Very long path lengths
  • Negligible degradation of signal-to-noise
  • Safe transmission path for monitoring at hazardous voltages
  • Immunity to electromagnetic fields
  • Elimination of ground loops

 

Specifications for AC coupled links

AC Coupled LinksG seriesK seriesP seriesS series
Passband40Hz to 250MHz2kHz to 1.35GHz1MHz to 2GHz10MHz to 3GHz
Gain Flatness (typical)±0.5dB (100Hz-250MHz)±0.5dB (10kHz-1.35GHz)±0.5dB±0.75dB
Gain Flatness (max.)±3dB±3dB±1.5dB±1.5dB
Phase Flatness> 100Hz : ±20°> 5kHz : ±20°±20° (typ.±5° for 1MHz to 1.5GHz)±20°(typ. ±5° for 1MHz to 1.5GHz)
Rise Time<1.4nS<350pS<250pS<200pS
Noise Figure (typical)< 24dB (22dB) @ 100MHz< 25dB (22dB) @ 500MHz<25dB (24dB) @ 500MHz, < 30dB @ 2GHz< 26dB (24dB) @ 500MHz, < 30dB @ 3GHz
Signal Latency (1M Fibre)10nS
Transmitter Input Impedence (VSWR)50W (<1.5:1)
Reciever Output Impedence (VSWR)50W (<1.5:1)
Input P1db>0dBm @ 100MHz>0dBm @ 500MHz>0dBm @ 500MHz>0dBm @ 500MHz
Input IP3>10dBm@ 100MHz>10dBm @ 500MHz>10dBm @ 500MHz>10dBm @ 500MHz
Signal InversionInverting
Operating Temperature-10 to +40°C
Optical Path Length<1m to ~4km
Optical Budget-3dB will turn status LED red/green on RX module, -10dB will turn status LED red on RX module
Electrical ConnectorsSMA Female 50W
Optical ConnectorsSinglemode: FC/APC Narrow Key
Current Consumption @ 12V<250mA for Transmitter Module, <150mA for Receiver Module
Front Panel Indication: Transmitter ModulePower supply status & transmitter active
Front Panel Indication: Receiver ModulePower supply status & received light level

Specifications - DC coupled links

DC Coupled Links2.5 MHz20 MHz40 MHz
Pass band0Hz-2.5MHz0Hz-20MHz0Hz-40MHz
Gain Flatness+/-0.5dB to 1MHz+/-0.25dB to 2MHz+/-0.25dB to 10MHz
+/-1dB to 2MHz+/-1dB to 15MHz+/-1dB to 30MHz
+/-3dB to 2.5MHz+/-3dB to 20MHz+/-3dB to 40MHz
Phase flatness<±10°
Rise time<135ns<20.5ns<10.3ns
Output Noise... (Full Band, all values are Vrms)
...For +/-2V output0.3mV (0.02% FS)0.8mV (0.06% FS)0.7mV (0.05% FS)
...For +/-10V output1.5mV (0.02% FS)N/AN/A
Signal latency (1M fibre)350ns280ns210ns
Transmitter input impedance1MΩ / 25pF typ.
Receiver output impedance50Ω @ ±2V standard
300Ω @ ±10V optional (2.5MHz limited)
Output DC offset (worst case over whole output range)<0.3% of FSD<0.3% of FSD<0.3% of FSD
Non-linearity0.1% of FSD0.1% of FSD0.06% of FSD
Operating temperature-20 to +60°C
Optical path length (singlemode)<1m to 10km
Electrical ConnectorsBNC 50Ω
Optical ConnectorsSinglemode: FC/APC
Current Consumption @ 12V: TX<240mA<240mA<210mA
Current Consumption @ 12V: RX<350mA<315mA<280mA
Front Panel Indication: Transmitter ModulePower supply status & ADC overflow
Front Panel Indication: Receiver ModulePower supply status & Link Lock status

Specifications quoted at 25°

Datasheets

DC fibre optic link datasheet

DC fibre optic link datasheet

Point2point RF over fibre links accessories datasheet

Point2point RF over fibre links accessories datasheet

AC fibre optic link datasheet

AC fibre optic link datasheet

Point2point RF over fibre links accessories datasheet

Point2point RF over fibre links accessories datasheet