TDM-300T Mux/Demux Optical Link HD-SDI, SD-SDIpdf
The TDM-300T is a card for the Time Division Multiplexing of multiple signals onto one singlemode fibre. Four serial digital video signals, (including one HD-SDI signal), can be electrically multiplexed before optical transmission on a single wavelength.
Any 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 particularly suited to the PROBE portable fibre optic enclosures.An electrical output from each card also allows the multiplexed TDM signal to be routed through standard 3G-SDI routing and distribution networks within a broadcast facility.
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-300T occupies a single slot in the BC100-3RU 19″ rack-mounting frame allowing up to 15 channels of multiplexed video to be transmitted and received in a single 3RU frame. Alternatively 6 cards can be housed in the compact BC-160 1RU.
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 to be multiplexed together i.e. 16 x HD signals and 48 SD-SDI on one singlemode fibre.

The TDM-300T can also be housed in an individual BC110/120 rugged enclosures.

Schematic Diagram
schematic End panel
Electrical Input Video
Connector 75 Ohm BNC per IEC 60169-8 Amendment 2
HD-SDI or SD-SDI Video
Number 1
Standards 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
Optical Output
Connector* 1 x female LC as standard
Wavelength 1310 nm as standard
Please contact the Sales Office regarding other wave lengths i.e. 1550 nm, CWDM
Optical Power -6 dBm @ 1310 nm
-6 dBm @ 1550 nm and CWDM,
0 dBm @ 1550 nm for /L high power output
Electrical Output Video
Number 1
Standards SMPTE 425 Level B
Return Loss SMPTE 424
General card specifications
Depth: 60 mm
Width: 20 mm 4TE
Height: 129 mm (3RU)
Weight: 100 g
Operating Temp: 0 to +70 ºC
Power: 7 W
Signal detect: LED on for loss of signal
No of slots: 1
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-300T/13 Singlemode video multiplexing card.
Provides 1 x HD/SD-SDI and 3 x SD-SDI all electrically multiplexed onto a single 1310 nm optical wavelength.
An electrical 3G-SDI output is also provided for distribution through a 3G infrastructure.
Fitted with LC connector. 1 card slot in standard BC Series frame.
Other wavelengths, power outputs and CWDM wavelengths available on request.
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 u to 6 BCxxx Cards. Includes Dual Redundant Power Supplies with optional
Network Monitoring.
BC110 Single Slot Chassis with Universal Mains Power Supply
BC120 Triple Slot Chassis with Universal Mains Power Supply