The OTX 1812 is a compact SDI to fiber optic transmitter designed to combat the restrictions involved with the distribution of uncompressed broadcast quality video signals over long distances.
When paired with the fiber optic to SDI receiver (e.g. yellobrik ORX 1802) you have a very cost effective optical transmission / receiver system for signals up to 1080p60 (3Gbit/s), while preserving full uncompressed quality.
The OTX 1812 provides a looping SDI input and support for LC, ST or SC singlemode fiber connections as well as an LC version suitable for multimode fiber.
The OTX 1812 will auto-detect and re-clock any 270Mbit / 1.5Gbit and 3Gbit SDI source prior to optical transmission and is completely transparent, transporting all video and any embedded audio / ancillary or metadata present on the SDI stream.
Key Features
- Supports SDI video inputs up to 3Gbit/s (1080p60)
- 3Gbit Level A and Level B support (all formats)
- Auto reclocking 270Mbit / 1.5Gbit / 2.97Gbit
- Error free optical transmission
- Reclocked SDI loop out connection
- Transports entire SDI payload including all embedded audio and all ancillary / metadata.
- Versions for LC, ST or SC fiber connections
- Multimode version available
- Up to 10km* (6.2 miles*) @ 3Gbit/s (singlemode)
- Up to 300m* (984 feet*) @ 3Gbit/s (multimode)
- Supports hot swapping and hot plugging
*Distance is an approximation. Actual distances achieved can be longer or shorter depending on the type of cable. Determine link losses and perform optical budget calculations to ensure correct operation
Ordering Information
| UPC / EAN | Model | Description |
|---|---|---|
| 4250479359642 | OTX 1812 LC | SDI to Fiber Transmitter SMF (LC Connector) |
| 4250479359659 | OTX 1812 SC | SDI to Fiber Transmitter SMF (SC Connector) |
| 4250479359666 | OTX 1812 ST | SDI to Fiber Transmitter SMF (ST Connector) |
| 4250479359673 | OTX 1812 MM | SDI to Fiber Transmitter MMF (LC Connector) |
| Options | ||
| 4250479329041 | RFR 1200 | 1RU 19″ Chassis for 14 yellobriks |
| 4250479315013 | RFR 1001 | Single Module Mounting Bracket |
| 4250479314016 | P-TAP 1000 | P-TAP Battery Power Adapter Cable |
| 4250479314009 | XLR-1000 | 4 Pin XLR Battery Power Adapter Cable |
SDI Video Input:
- 1x SDI input on 75 Ohm BNC connector
- 1x SDI output reclocked loop on 75 Ohm BNC connector
- SMPTE 424M, SMPTE 292M, SMPTE 259M, DVB-ASI
- YCbCr 4:4:4/4:2:2/4:2:0
- 8, 10, 12-bit
- 3G-SDI Level A or B Dual Link
- Multi-standard operation from 270Mbit/s to 3Gbit/s
- Multi-rate reclocking: 270Mbit/s – 1.5Gbit/s – 3Gbit/s
- Transparent: Transports entire SDI payload including all embedded audio and any ancillary / metadata.
Electrical Return Loss:
- 5GHz: >15dB
- 3GHz: >10dB
Automatic cable EQ: (Belden 1694A cable)
- 270Mbit/s = 250m
- 5Gbit/s = 220m
- 3Gbit/s = 150m
Optical Output:
1 x fiber optic output:
- Simplex (Singlemode) LC/PC, ST/PC, or SC/PC connection or
- Simplex (Multimode) LC/PC connection
- SMPTE 297M – 2006
Wavelength:
- OTX 1812 LC /ST/SC = 1310nm (Singlemode)
- OTX 1812 MM = 850nm (Multimode)
Optical power:
- OTX 1812 LC/ST/SC -8 dBm to -3dBm (Singlemode)
- OTX 1812 MM -7dBm to -2dBm (multimode)
- TX active LED on side of module
Max. distance*
- OTX 1812 LC/ST/SC max. 10km* (6.2 miles*) @ 3Gbit/s (Singlemode)
- OTX 1812 MM max. 300m* (984 feet*) @ 3Gbit/s (Multimode)
Power
- +12V DC @ 1.9W nominal – (supports 7 – 24V DC input range)
- Power Present LED on side of module
Physical Size: (including connectors)
- Metric:140mm x 42mm x 22mm
- Inches: 5.51” x 1.65” x 0.86”
Weight:
- 125g (4.4oz)
Operational Temperature Range:
- Ambient 5 – 40ºC (41 – 104ºF) 90% Humidity (non-condensing)
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*Distance is an approximation. Actual distances achieved can be longer or shorter depending on the type of cable. Determine link losses and perform optical budget calculations to ensure correct operation

