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Main / Optical interfaces / PORC-3271SFP

PORC-3271SFP(A) optical receivers provide the Time Division deMultiplexing of up to four SDI or ASI electrical streams received over a single optical wavelength signal. PORC-3271SFP(A) is intended to pair with the POTM-3251 optical transmitter. PORC-3271SFPA optical receiver is equipped with the APD (advanced photodiode) sensor SFP optical input, which provides higher optical sensitivity. PORC-3271SFP(A) module occupies one slot in the PROLFEX 1U/3U racks so that up to four receivers fit into a 1U rack and up to fifteen into a 3U rack.

Features

• SFP module as an optical input, providing a hot-swap capability and real-time monitoring of the optical input power
• APD SFP module (PORC-3271SFPA model only)
• up to four electrically multiplexed SDI/ASI streams over single optical fiber
• single optical signal in the WDM/CWDM band
• up to eight channels received using two optical DEMUX in WDM band
• up to sixty four channels received using sixteen optical DEMUX in CWDM band
• signal loss indication
• fault tolerant reception - loss of any signal within a multiplexed input stream does not affect the demultiplexation of the remaining signal(s)
• CRC status indication

Technical specifications

• Optical input
  

  Number of inputs	one, reclocked
  Optical sensitivity band	1100~1650nm
  Maximum optical input power	-3dBm
  Optical dynamic range	PORC-3271SFP	-24~-3dBm
  	PORC-3271SFPA	-29~-9dBm
  Data throughput	1600Mb/s
  Optical connector type	LC/UPC (SFP module)

• Electrical output
  

  Standard compliance	SMPTE259M A,B,C,D; DVB-ASI, as per optical input
  Number of outputs	4, reclocked
  Output impedance	75 Ohm
  Return loss	better than 18dB up to 270MHz
  Connector type , signal amplitude	BNC, 800mV
  Signal rise/fall time, jitter	700ps, 0.2UI
  Connector type	BNC

General description

An input optical signal of a single wavelength is detected and converted into electrical form. An electrical signal is deserialized by means of the TDM (TimeDivision deMultiplexing) and up to four SDI or DVB/ASI signals are recovered. These signals are available at electrical outputs.

PORC-3271SFP(A) rear panel:

Controls and indicators

PORC-3271SFP(A) frontal panel:

The controls

The MODE button toggles through all the modes, the UP button edits them. The CRC RESET button is used to reset the CRC status.

The indicators

• LINK LOCK – lit if there is valid input optical signal
• LINK LOSS – lit when an optical signal is lost
• CRC MIN – lit if there was a CRC error in the DVB-ASI stream during a last minute interval
• MON - lit when an output channel number is being assigned for monitor output (with the UP button)
• RxPwR - lit when an input optical power is being shown at the mail display (in dBm)
• CHANNEL 1...4 – lit if a valid SDI or DVB/ASI data stream is detected in a TDM slot
• LOSS 1...4 – lit when there is no data or a PLL cannot lock on a channel's stream

The remote control and management from a PC

All the “PROFLEX” modules are remote controllable from a PC. This facility is available if a rack is fitted with a CPU module (ordered separately).