Drake SCT2X4 HITS Model
2 SATELLITE DEMODS
The SCT2X4 is a Satellite to Cable Transcoder that includes two satellite tuners and demodulators that are independently tuned and demodulate two satellite transponders. Each tuner has its own L band input so that choices are not limited to one polarity or satellite.
The SCT2X4 is designed mainly to recover MPEG2 or H.264 video from the satellite-downlinked transmissions. This model is configured to receive 8PSK modulation with DVB-S2 FEC.
X MULTIPLEXING AND GROOMING
After demodulation, the correct programs will be directed to the correct QAM channels automatically based upon the transponder selection. SAT 1 programs are directed to QAM1 and QAM 2 while SAT 2 programs are directed to QAM3 and QAM 4.
4 QAM MODULATORS
The data rates are such that when the satellite transmissions are 8PSK with DVB-S2 FEC, the programs from two transponders will usually require four QAM output channels if all programs are selected. Four high performance QAM modulators, with up to + 55 dBmV output level per QAM, after combining of the 4 QAMs, are included.
The SCT2X4 does not alter the scrambling that is likely to be in place on the program streams. The scrambled streams pass intact through the transcoder and are delivered to the set top box where the descrambling will occur.
The SCT2X4 does provide a data output that can be used to direct satellite delivered data, such as EMM streams, to the local headend. This output is active only if your system is designed to use this feature.
The SCT2X4 also provides an ASI input where additional locally generated programs can be input. This input is only usable if your system is designed to use this feature.
The SCT2X4 may be remotely monitored and controlled via its RS232 interface.
Download the owners manual (PDF)
| Drake SCT2X4 HITS Model Specifications | |
|---|---|
| RF Output | |
| Frequency range: | 54 MHz to 1002 MHz. Standard CATV, HRC, IRC, or Broadcast channel plans are supported. |
| Frequency stability: | ±5 ppm |
| Phase noise: | -101 dBc/Hz @ 10 kHz offset |
| Output level: | +55 dBmV / channel. |
| Accuracy: | ±1 dB |
| Output level stability: | ±1 dB |
| Output level adjustment range: | +45 dBmV to +56 dBmV nominal output level. |
| Output impedance: | 75 ohm, return loss = 14 dB |
| Modulation modes: | CW, QAM - 16A, 32A, 64A, 128A, 256A, 512A, 1024A, 64B, 256B, 1024B |
| QAM symbol rate: | 1 MS/s to 7 MS/s |
| Spurious: | 60 dBc, 5 MHz to 1002 MHz |
| Broadband noise: | -69 dBc @ 6 MHz bandwidth, equivalent to -75 dBc for a single channel. |
| QAM I/Q phase error: | < 1 degree. |
| Channel amplitude error: | < 1 dB. |
| Carrier suppression: | > 45 dB |
| MER: | > 40 dB with blind equalizer |
| Satellite Inputs | |
| Frequency range: | 950 MHz to 2150 MHz |
| Input impedance: | 75 ohm, return loss = 10 dB |
| Input level range: | -25 dBm to -65 dBm / transponder. |
| Input level matching: | Input levels between the two inputs should be within 15 dB for optimum performance. |
| Mode: | QPSK, 8PSK |
| FEC: | DVB-S2. |
| Symbol rate: | 2 MS/s to 30 MS/s |
| LNB power: | +18V ± 10%, 500 mA maximum total of both inputs. |
| ASI Outputs | |
| Impedance: | 75 ohms |
| Data rate: | 270 Mb/s. |
| ASI Input | |
| Impedance: | 75 ohms |
| Data rate: | 270 Mb/s |
| Cable length: | 1000 ft. maximum |
| RS232 | |
| Data rate: | 2400, 4800, 9600, or 19200 baud. |
| Maximum loop length: | 10 units |
| General | |
| Power: | 90 to 132 VAC / 60 Hz, 85 Watts. |
| Size: | 19" W x 3.5" H x 21.5" D |
| Weight: | 16 pounds |
| Operating Temperature Range: | 0 to +50 degrees Celsius |
Specifications, price, and availability are subject to change without notice or obligation.
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