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TDM Modulator receives Time Multiplex signal of CDM transmitting signal with FEC and QPSK process and outputs final 140MHz IF signal and 1476.5MHZ RF signal and ASI signal.
- Provides 1,476.5MHz basic signal to Gap Filler and analyze performance at the output line of Gap Filler.
- Compatible sub equipment with output of 140MHz IF and DVB-ASI
- Provides easy user interface by GUI
- TDM output area required specification EN 300 421 V1.1.2 Digital Video Broadcasting(DVB) framing structure, channel coding and modulation for 11/12GHz satellite services
- Provides easy user interface by GUI
- Provides 1,476.5MHz basic signal to Gap Filler and analyze performance at the output line of Gap Filler.
- Occur of TDM signal(IF, RF, ASI) in DVB-S standard
- IF, RF outputted 0.5[dB] unit adjust is available
- CDM signal input
- Input of CDM DATA in file format with GUI
- Input of various code rate and CDM falsification DATA
- Usage Environment
- GUI
| Item | Specifications | Note | |
|---|---|---|---|
| Output Frequency | IF | 140MHz 1 x 10^8 | BNC Female |
| RF | 1,476.5MHz 1 x 10^8 | ||
| Serial Output | Support DVB-ASI | BNC Female | |
| Output Range | IF | 0 ~ -20 dBm | |
| RF | -20 ~ -60 dBm | ||
| Output Spurious | IF | -55 dBc at fc 25 MHz | |
| RF | -55 dBc at fc 25 MHz | ||
| Input Signal | Time Multiplexed CDM | E-Net | |
| Output Impedance | 75 Ohm | ||
| Symbol Rate | Input | 16.384 MHz | |
| Output | 18.432 MHz | ||
| Modulation | QPSK | ||
| CH. EA | 32 (1 pilot + 31 broadcasting) | ||
| Error Correction Code | Shortened RS Code (204, 188) | ||
| Convolution Code (1/2, K=7) | |||
| Interleaving | Convolutional | ||
| Roll Off | 0.35 Root Raised Cosine | ||
| Reference Clock | Internal and External Selected Function Support | BNC Female | |
| CW mode | CW mode On/Off Function Support | ||
- Front Panel
- Power SW : System ON/OFF switch
- LCD Pannel : Used for system condition display and user interface.
- Button Key : Used for controlling menu, compatible with LCD
- Rear Panel
- Power Module ON/OFF SW : ON/OFF switch of power module
- AC Power Input : 220V AC input port
- FAN : Equipment radiation FAN
- RS-232 USB port : USB port for RS-232 serial communication
- 10/100 Mbps Ethernet port : Ethernet port for CDM data receiving and controlling/checking the
equipment for TCP communication - DVB-ASI output : TDM falsified DVB-ASI format output
- 10MHz IN : 10MHz external eeference clock input
- 10MHz OUT : 10MHz reference clock output
- 1,476.5MHz RF OUT : TDM falsified 1,476.5MHz output
- 140MHz IF OUT : TDM falsified 140MHz output
