| HOME --> Product -->Digital Headend->DVB-T Modulator(CVBS Input) --> |
| | SDM-T1 | GSM-T1 | |
GSM-T1
• DVBT only
• Single channel
• No hierarchical transmission
• Configurable convolution Rates
• QPSK/ 16 QAM/ 64 QAM symbol Mapping
• 2K/ 8K FFT
• Configurable Guard Interval : 1/4, 1/8, 1/16, 1/32
• Support Channel Bandwidth 6/7/8 MHz
• MER 35 dB, typically
• Carrier Suppression > 42 dB
| Source input | RF Output | |||
| Input Channel | 1 | Type | 1 Multiplex DVBT with a digital TV service |
|
| Video | CVBS |
Frequency | 177 – 858 MHz | |
| Video System | PAL/NTSC | MER | 35 dB, typically | |
| Video input level | 1Vpp @ 75 ohms | Output level | 100 dBuV | |
| Audio input level | 0.5 - 2Vpp @ 10K ohms | Digital Gain/ Attenuation |
+5 ~ -10dB | |
| Audio system | 2 x Mono (stereo) | Attenuation step | 1dB per step | |
| Bandwidth | 20 Hz to 20 KHz | |||
| Connections | Modulation | |||
| RF Output | 1 DVBT RF output with type F female, 75 ohm | Standard | DVBT (ETSI EN 300 744) | |
| Video | RCA female | Constellation | QPSK, 16QAM, 64QAM | |
| Audio, L/R | RCA female | Guard Interval | 1/4, 1/8, 1/16, 1/32 | |
| Code Rate | 1/2, 2/3, 3/4, 5/6, 7/8 | |||
| Compression | FFT Carrier Mode | 2K, 8K | ||
| Video | MPEG2 MP@ML | Bandwidth | 6MHz, 7 MHz, 8MHz | |
| Video Resolution | 720 x 576i (25fps)(PAL) 640 x 480i (30fps)(NTSC) |
Power Supply | 6W @ 5V | |
| Video Bit rate | 10Mbps@64QAM /16QAM 3Mbps@ QPSK |
Display | LCD panel @ 2 x 16 characters (on front panel). | |
| Audio | MPEG 1 layer II(MP2) | Configuration | 6 Local keys on front panel : ‧OK Key : Select parameter, or menu ‧L / R Keys : Move menu, or characters ‧Up / down : Select value of the figure, or field ‧menu keys : Select menu |
|
| Audio Bit rate | 96 – 384 Kbit/S | Environmental foroperating | Temperature 5°C- 40°C Relative Humidity 80% @ 30°C |
|
| DVB insertion tables | SDT, NIT | |||
| Editable field | Service Name, / Transport-Stream_id, /network_id, original_newtork_id, / LCN/ NIT/Private Data specifier |
|||
