Real-World Technology Ltd
17th May 1999: Product design update from RWT
for the Cable & Satellite Mediacast 99 Exhibition, Earls Court, London
Digital Terrestrial Television (DTT/DVB-T) Tuner
17th May 1999: Product design update from RWT
for the Cable & Satellite Mediacast 99 Exhibition, Earls Court, London
Digital Terrestrial Television (DTT/DVB-T) Tuner
 Complete DTT front-end ('NIM') solution, UHF to MPEG TS, incorporating the new Oak Technology OTI-7000 chip |
Real-World Technology Ltd., the UK’s tuner design specialist, is proud to present the world’s first DTT tuner designed for OEM manufacture as an integral component of the digital TV, VCR or Set-Top Box. This triple-superhet design has the supreme advantage of delivering performance exceeding the stringent DVB requirements for 64-QAM 2k/8k COFDM modulation in an adjacent-channel PAL environment, while requiring absolutely zero alignment in manufacture.
The RWTUN-2100 tuner was developed under contract to LSI LogicTM in support of the L64780 single-chip COFDM demodulator program, with the assistance of BBC Research and Development, and the design is now available for licensing by RWT to receiver manufacturers.
In lab and field tests the RWTUN-2100 has consistently outperformed those in current set-top boxes from the major manufacturers, in the key areas of phase noise, sensitivity and adjacent-channel protection ratio.
 | Download (shift-click) tuner specification sheet in Adobe Acrobat .PDF format |
|
Principal performance features at a glance: (provisional specification)
| Input Frequency Range : | 470-860 MHz min | ||
| Noise Figure: | 5.5 dB max | ||
| Sensitivity (64 QAM mode): | -80 dBm typ | ||
| I.F. Bandwidth : | 7.61 MHz nom | ||
| Offset support: | 0 ± 167 kHz (or will customise) | ||
| Output frequency: | 4.571 MHz ±10kHz (AFC off) | ||
| AFC range (optional analogue AFC): | ± 100 kHz min | ||
| Output level: | -10 dBm nominal into 75 ohms (or custom) | ||
| AGC range: | 70 dB min (external control) | ||
| Image Channel Carrier Rejection: | 70 dB min | ||
| Adjacent Channel Carrier Rejection (n±1, fV, fS, fN): | 70 dB min | ||
| Adjacent Channel PAL-I(1) Protection Ratio (n±1): | -40 dB min | ||
| SSB Phase Noise (overall): | at offset | 1 kHz: | -80 dBc/Hz max |
| 10 kHz: | -91 dBc/Hz max | ||
| 100 kHz: | -102 dBc/Hz max | ||
| 1 MHz: | -128 dBc/Hz max | ||
| Tuning interface: | 3-wire plus select line, or I2C bus | ||
| Power supply requirement: | +5V at 480mA, +28V at 2mA typ | ||
But ... don't get too excited yet - read our Licensing Philosophy first, then get excited.
Advantages of taking out a manufacturing licence for the RWTUN-2100:
See it working off-air:
- the BBC has chosen the RWT tuner for its RC3S/506A professional DTT monitoring receiver. This is now being manufactured under licence by Broadcast Technology Ltd. Watch out for a demonstration at the London Cable and Satellite ("Mediacast") exhibition this week.
Contact RWT: info@rwt.co.uk
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