TDM-300RA Mux/Demux Optical Link – HD-SDI, SD-SDI, Audio, Datapdf

The TDM-300RA is a card for the Time Division Demultiplexing of multiple signals from one singemode fibre. Four serial digital video signals (including one HD-SDI signal), eight line level analogue audio and RS232/422 data can be electrically demultiplexed from the TDM-300T. Embedded audio or other data embedded within the ancillary data space is passed transparently.

The TDM-300 links are ideal for tie-lines and Outside Broadcast applications and are particularly suited to the PROBE portable fibre optic enclosures.
An electrical input from each card also allows the multiplexed TDM signal to be routed via a standard 3G-SDI routing and distribution network within a broadcast facility.
This is link selectable between the optical and electrical inputs.
By combining multiple or bidirectional TDM-300 links with standard BC Series cards complex optical networks can be realized in the most cost effective and compact footprint.

The TDM-300RA occupies a double slot in the BC100-3RU 19″ rack-mounting frame allowing multiple channels of multiplexed video (e.g. 7 x HD-SDI, 21 x SD-SDI, 56 x audio and 28 x data signals) to be received in 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.

CWDM variants are available allowing up to 16 TDM links on one single fibre.
For stand alone applications the TDM-300RA can be housed in an individual BC120 enclosure.

Schematic Diagram
schematic End panel
Specifications for each channel
Optical Output
Connector* 1 x female LC as standard
Wavelength 1260-1620 nm.
Sensitivity > -25.5 dBm @ 1.485 Mb/s
> -26 dBm @ 270 Mb/s
Max I/P power > -1 dBm
Data rate 10 Mb/s to 3 Gb/s
Electrical Output Video
Connector 75 Ohm BNC per IEC 60169-8 Amendment 2
HD-SDI Video
Number 1
Standard SMPTE 292M, SMPTE 259M, SMPTE297M, SMPTE 305M
Equalisation Automatic to 200 m @ 1.485 Gb/s
Return Loss > 15 dB @ 1.485 Gb/s
SD-SDI Video
Number 3
Standards SMPTE 259M, SMPTE 305M
Equalisation Automatic to 300 m @ 270 Mb/s
Return Loss > 15 dB @ 270 Mb/s
Electrical Output Audio
Connector 25 way D connector, impedance 100 kOhm
Format 20 Hz to 20 kHz +/- 0.25 dB per link
0 dB system gain, 18 dBu
Number 8 x Balanced Line Level Analogue Audio
Electrical Output Data
Connector 9 way D connector
Number 2 x RS232 Half Duplex level inputs
2 x RS422 Half Duplex level differential inputs
General card specifications
Depth: 60 mm
Width: 40 mm 4TE
Height: 129 mm (3RU)
Weight: 100 g
Operating Temp: -30 to +70 ºC
Power: 10 W
Signal detect: LED on for loss of signal
No of slots: 2
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
Ordering Information
TDM-300RA Singlemode video, audio and data de-multiplexing card.
Provides 1 x HD/SD-SDI, 3 x SD-SDI and 8 analogue audio outputs plus 2 x unidirectional RS232 and 2 x unidirectional RS422 data signals.
An electrical 3G-SDI input is provided for distribution from a 3G infrastructure.
Fitted with LC connector. 2 card slot in standard BC Series frame.
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
PS65 90-250VAC Power Supply for BC100-3RU or BB100-3RU Chassis
BC160 19” 1RU Chassis for up to 6 BCxxx Cards fitted with Dual Redundant Power Supplies.

Triple Slot Chassis with Universal Mains Power Supply