OH 66 Twin A/V encoder
Category : Compact Headend
Powerful technology, compact dimensions, modular and flexibly expandable; the WISI COMPACT HEADEND System OH combines all the advantages of an innovative and affordable headend. WISI Compact Headend OH is easy to configure. With up to 14 module slots it offers channel processing for 14 analogue or 28 digital channels in a 3 HU 19“ rack chassis. WISI Compact Headend OH operates on a high efficiency power supply, with low consumption modules in order to make a minimum ecological impact and a low operational cost. The USB connection and the RJ45 interface can be used to execute software updates for the basic unit as well as for the modules. Furthermore, all functions can be furnished from a distance per web browser.
- Analog video input
- Digital SDI input
- QAM- or COFDM*-modulation
- PSI/SI generation
- ASI input and output
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Video input |
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| Input signal | Composite CVBS-signal und SDI |
| Impedance | 75 Ω |
| RF input level | 1 dBm |
| Frequency range | 0,000020...5 MHz |
| Encoding-Standard | MPEG 2 ISO/IEC 13818-2, MP@ML (4:2:2) |
| Bit rate | 1...12 Mbps (0,1 Mbit-steps) |
| Picture size | 720/576 Pixel |
| Teletext | Extraction from video signal |
| aspect ratio | 4:3, 16:9 (automatic detection) |
| PID | automatic/manuell |
| PSI/SI | Autom. Generation |
| NIT with LCN | Optional with CS77 |
|
Audio input |
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| Sampling frequency | 32/44, 1/48 kHz |
| Bit rate | 192 Kbps (up to) |
| Audio format | Stereo, joint stereo, dual, mono |
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Output |
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| Frequency range | 47...862 MHz |
| QAM/COFDM Modulation | Selectable |
| Modulation | 16-, 32-, 64-, 128-, 256-QAM |
| Output frequency steps | 250 kHz |
| Ouput channel bandwidth | 8 MHz |
| Output level | 88...103 dBµV |
| MER | ≥ 40 dB |
| Symbol rate | 2...8 MS/s |
| Bit stuffing | Yes |
| COFDM-Mode | Selectable |
| Modulation | QPSK, 16-, 64-QAM |
| FEC | 1/2, 2/3, 3/4, 5/6, 7/8 |
| Guard Interval | 1/4, 1/8, 1/16, 1/32 |
| FFT modus | 2 k/8 k |
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Connectors |
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| 3,5 mm jack socket | 2 pcs. |
| BNC-socket | 4 pcs. |
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General data |
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| Operating temperature range | -20...+55 °C |