Bluebell Opticom Ltd.

 
BC420T Single Channel Electrical to Optical Embedder SD-SDIpdf

The BC420T is a transmitter for the conversion of SD-SDI into an optical signal with the ability to embed 4 channels of analogue audio. The incoming signal is auto-sensed and then equalised prior to conversion and transmission down a single optical fibre. All Bluebell cards are designed to retain maximum integrity of the signal path offering excellent jitter free optical transport. Careful attention has been paid to reduce thermal runaway, eliminating the need for forced air cooling as fan failure and overheating is the most common cause of failure in modern electronic systems.

The BC420T is available in multimode, singlemode, WDM and CWDM variants to suit any fibre application.

The BC420T occupies a single slot in the BC100-3RU 19" rack-mounting frame which can hold up to 15 single slot cards. Some BC Series processing cards have dual functionality allowing up to 30 channels of video to be transmitted or received from a single 3RU frame.
Signal and card monitoring is achieved through SNMP monitoring in the BM101 network card.
Alternatively GP-Output alarms can be triggered via the BM100 module.

For stand alone applications the BC420T can be housed in an individual rugged enclosure.
Schematic Diagram
schematic End panel
Specifications for each channel
Electrical Input Video
Standards SMPTE 292M, SMPTE 259M, SMPTE297M SMPTE 305M, SMPTE310M, DVB-ASI
Equalisation
 Automatic to 100 m @ 1.485 Gb/s
Automatic to 300 m @ 270 Mb/s
Equaliser and reclocking can be bypassed to support data rates down to 10 Mb/s
Connector 75 Ohm BNC per IEC 60169-8 Amendment 2
Return Loss > 15 dB @ 1.485 Gb/s
Electrical Output Video
Connector* 75 Ohm BNC per IEC 60169-8 Amendment 2
Return Loss > 15 dB @ 1.485 Gb/s
Polarity Non inverting
Signal Level 800 mV +/- 10%
DC Offset 0 +/- 0.5 V
Jitter <0.2 UI line equalised
Format Driven active loop out
Electrical Input Audio
Connector * 15-way D connector, impedance 100 kOhm
Format

20 Hz to 20 kHz +/- 0.25 dB distortion
0 dB system gain, 18 dBu ref 1 mW into 600 Ohm
Number 4 x Balanced Line Level Analogue Audio
Optical Output
Connector * 1 x female FC/PC, ST or SC
Wavelength 850 nm, 1310 nm, 1550 nm, CWDM
See Ordering Information
Optical Power -14 dBm @ 850nm
-6 dBm @ 1310 nm
-6 dBm @ 1510 nm
0 dBm @ 1510 nm for the /L High power version
General card specifications
Depth: 60 mm
Width: 20 mm 4TE
Height: 100 mm (3RU)
Weight: 100 g
Operating Temp: -30 to +70 ºC
Power: 2.2 W
Signal detect: LED on for loss of signal
No of slots: 1
Conformance  
EMI/RFI: Complies with 89/336/EEC
Electrical: Complies with EN 61000-6-1, EN61000-6-2
Laser Safety Complies with Class 1 laser product
24 CFR 1040.10 & 1040.11
RoHS: Complies with Directive 2002/95/EC
Warranty: 5 years
  * See Ordering Information
The connector types specified below are supplied as standard.
For alternative connectors please replace the last two suffices of the part
number with the relevant type.
Please contact the Sales Office before ordering.
ST ST connector
FC FC connector
SC SC/PC connector
Ordering Information
BC420T/M/13/ST Multimode SDI Optical Transmitter Card with 4 x Analogue Audio Embedder (1310nm) with ST connector.
BC420T/S/13/FC Singlemode SDI Optical Transmitter Card with 4 x Analogue Audio Embedder (1310nm) with FC connector.
BC420T/S/15/FC Singlemode SDI Optical Transmitter Card with 4 x Analogue Audio Embedder (1550nm) with FC connector.
BC420T/S/CWDM/FC Singlemode SDI Optical Transmitter Card with 4 x Analogue Audio Embedder with FC connector.
Universal Chassis and Power Supplies
BC100-3RU 19" 3RU Chassis for up to 15 BCxxx Cards with optional Network Monitoring and
facility for Dual Redundant Power Supplies (not supplied).
BC100-3RU/48V 19" 3RU Chassis for up to 15 BCxxx Cards with optional Network Monitoring and facility
for Dual Redundant Power Supplies (not supplied). Fitted with 48V dc input.
BM100 Network Monitoring Card with GPI Output on a SCSI Connector for Slot-16
BM101 Network Monitoring Card with Ethernet connection for Slot-16
BC140 Extender Card for BC100 3RU Chassis
PS65 90-250VAC Power Supply for BC100-3RU or BB100-3RU Chassis
BB110 Single Slot Chassis with Universal Mains Power Supply
BB120

Triple Slot Chassis with Universal Mains Power Supply