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DDT-4632 & DDR-4632:
Dual 3G/HD/SD-SDI/ASI Fibre Optic Link | ||
FEATURES:
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GENERAL:
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The IRT DDT-4632 and DDR-4632 are dual transmit and receive modules designed principally for
use as two independent serial data fibre optic transmission links for 3G-SDI, HD-SDI or SD-SDI applications conforming to SMPTE standards 424M,
292M and 259M-C using 9/125 µm single mode fibre. | ||
TECHNICAL SPECIFICATIONS:
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DDT-4632: |
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Input serial data signal |
2.97 Gb/s (3G-SDI) to SMPTE 424M; 1.485 Gb/s (HD-SDI) to SMPTE 292M; 270 Mb/s (SD-SDI) to SMPTE 259M-C and DVB-ASI. |
Input Impedance |
75 Ω. |
Input Return Loss |
> 15 dB 5 MHz to 1.5 GHz; > 10 dB 1.5 GHz to 2.97 GHz. |
Automatic Cable Compensation |
> 100 m at 2.97 Gb/s (3G-SDI) with Belden 1694A (typ. 110m);; > 100 m at 1.485 Gb/s (HD-SDI) with Belden 1694A (typ. 160m); > 250 m at 270 Mb/s (SD-SDI/ASI) with Belden 8281 (typ. > 300m). |
Input Connector |
2 x BNC on rear panel, 1 per channel. |
Output Connector |
2 x BNC on rear panel, monitor outputs. |
DDR-4632: |
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Number of Outputs |
1 per channel, data reclocked, AC coupled. |
Output Level |
800 mV ± 10%. |
Output Impedance |
75 Ω. |
Output Return Loss |
> 15 dB 5 MHz to 1.5 GHz; > 10 dB 1.5 GHz to 2.97 GHz. |
Output Rise and Fall Time |
< 135 ps at 2.97 Gb/s and 1.485 Gb/s; > 0.4 ns and < 1.5 ns at 270 Mb/s. |
Intrinsic Jitter |
< 0.3 UI at 2.97 Gb/s reclocked; < 0.2 UI at 1.485 Gb/s reclocked; < 0.1 UI at 270 Mb/s reclocked. |
Output Connector |
2 x BNC on rear panel, 1 per channel. |
Optical: |
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DDT-4632 Optical Output |
0 dBm +4.5/-0 dB CWDM DFB laser. |
DDR-4632 Optical Input |
APD detector, -9 to -27 dBm input level at 3G-SDI, typically < -30 dBm at HD/SD-SDI. PIN detector, -3 to -18 dBm input level at 3G-SDI, typically < -20 dBm at HD/SD-SDI. |
Available Wavelengths |
CWDM DFB laser - 1310/1550nm (standard). Other wavelengths combinations available on request. |
Optical Path Loss3,4 |
9 to 27 dB at 3G-SDI, typically >30 dB at HD/SD-SDI, APD detector; 3 to 18 dB at 3G-SDI, typically >20 dB at HD/SD-SDI, PIN detector. (Optical path loss = Laser O/P power - Detector I/P power) |
Optical Fibre |
Designed for use with 9/125 µm single mode fibre. |
Optical Connector |
2 x SC/PC (standard) on rear - direct connection to main card, 1 per channel; 1 x SC/PC (standard) with WDM option fitted. |
Power Requirements: |
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Voltage |
28 Vac CT (14-0-14) or ±16 Vdc. |
Power consumption |
DDT-4632 < 5.0 VA, DDR-4632 < 5.0 VA. |
Other: |
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Temperature range |
0 - 50°C ambient. |
Mechanical |
Suitable for mounting in IRT 19" rack chassis with input, output and power connections on the rear panel. |
Finish: Front panel |
Grey background, black lettering & red IRT logo. |
Rear Panel |
Detachable silk-screened PCB with direct mount connectors to Eurocard and external signals. |
Dimensions |
6 HP x 3 U x 220 mm IRT Eurocard. |
Optional Accessories |
On-board 1310/1550nm WDM combiner. |
WDM Order Codes |
DTR-4632/WDM & DTR-4632/WDM. |
NOTE 3: |
Typical values based using DFB laser. Optical attenuators supplied for
DDR-4632 when optical path loss is less than 3dB for PIN detector and 9dB for APD detector. |
4: |
With WDM option fitted for combined use on a
single fibre, optical path loss is reduced by approximately 2dB. |
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DDT-4632: Separate Tx Fibres (Standard) |
DDT-4632: Single Fibre WDM version (Option) |
DDR-4632: Separate Rx Fibres (Standard) |
DDR-4632: Single Fibre WDM version (Option) |
DDR-4632: IN 1 & IN 2 BNC connectors not used. |
Due to our policy of continuing development, these specifications are subject to change without notice.
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