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4281 Single SDI to Optical Converters

4281 Single SDI to Optical Converters

The 4281 Single SDI to Optical Converter supports SD, HD & 3G SDI, DVB/ASI 270Mbps and can transmit a signal up to 30Km using singlemode fibre.

It is housed in an extremely compact and rugged aluminium case ideally suited to both studio and portable applications.

The unit requires an external power supply or a rack mounting frame. Please see MiniBlox Accessories.

Key features:


  • Supports data rates from 50Mbps to 3Gbps
  • Automatic Cable Equalisation
  • Multi-rate reclocking with automatic rate detection and automatic bypass for non SDI data rates
  • LEDs display power and SDI lock status
  • Wide input voltage range 6-12VDC
  • Locking DC jack
  • Optical output on female LC connectors
  • Provides reclocked loop-through SDI output
  • Optical transmit on 1310nm (1550nm and CWDM options available)
  • Use in conjunction with 4283 for a complete fibre transmit/receive system


Technical Specifications
Video Specification
Video input
Standards SMPTE 297M, SMPTE 259M, SMPTE 292, SMPTE 424M, DVB-ASI
Connector 75 Ohm BNC
Data rate 50Mbps – 3Gbps
Signal Level 800mVp-p ±10%
Return loss >15dB to 1.5GHz, >10dB 1.5GHz-3GHz
Cable equalisation 3G to 140m, HD to 200m, SD to 400m
(Bryant BD SD10, Belden 1694A or equivalent)
Compliance Class 1 FDA and IEC60825-1 Laser safety
Centre wavelength 1310nm ± 20nm @ 25ºC (1550nm and CWDM options available
TX Laser FP (DFB for CWDM Version)
Fibre type Singlemode
Optical Transmitter Power –2dBm typ.
Voltage 6-12VDC
Other Specifications
Indicators Power and SDI lock
Size (mm) 63.5mm x 84mm x 30mm plus connectors
Weight 145g
Temperature 5°C to 40°C
Humidity 80% max (non condensing)
Description      Each:
Price Qty
DTL 4281MiniBlox single SDI to 1310nm optical converter£341.00
DTL 4281-2MiniBlox single SDI to 1550nm optical converter£436.00
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