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产品介绍: |
CMG2000是一台多和一的全功能信号发生器,满足中国移动多媒体广播标准,其中有DTMB-TH和ADTB-T选件。通过高性能上变频技术,其能满足步长为1hz,50MHz--870MHz的频率范围。
Main Characteristics
- China Mobile Multimedia Broadcasting Signal Generator
- Modulator : CMMB
- China MobileTV/DTV Integrated Test Solution support
(DMB-TH, ADTB-T : Optional)
- Time-Slot Setting (Max. 40)
- Logical Channel Setting (Max. 40)
- MFN Network mode support
- AWGN/Fading Simulation (Optional)
General Characteristics
- RF Upconverter : 50 ~870MHz
- OFDM Modulation
- PRBS Pattern Test (PRBS-9/ -15/ -23)
- AWGN (support future)
- Modulation Information
- System Information
- Frequency Information
- Frequency Table support
- TS List
Intended Application
- CMMB receiver Design and Manufacturing Test
- Simulation of CMMB Broadcasting
- Broadcasting Transmission
- CMMB Chip Development (Tuner/MPEG) - CMMB Demonstration & Sales
Modulator Specifications
CMMB Module
- Broadcasting system
- Digital Terrestrial TV : CMMB
- Transmission Parameter
- Modulation : OFDM - Support Mode : 4K - Constellations : BPSK, QPSK, 16QAM - Byte Interleave : Mode 1, Mode 2, Mode 3 - RS Coding : RS(240,240);RS(240,224); RS(240,192);RS(240,176) - Code Rate : ½, ¾, LDPC - Time Slots No. : 40 - Bandwidth : 8MHz - Guard Interval : 1/8
DTMB(DMB-TH) Module (MM-506)
- Broadcasting system
- Digital Terrestrial TV : DTMB(DMB-TH)
- Transmission Parameter
- Modulation : TDS-OFDM - Constellations : 4QAM(QPSK), 16, 64QAM - Guard Interval : PN420, PN945 (Frame Header) - Coding Rate : 0.4, 0.6, 0.8 - Bandwidth : 5, 6, 7, 8 - Time Interleaver : 240, 720
DTMB(ADTB-T) Module (MM-506)
- Broadcasting system
- Digital Terrestrial TV : ADTB-T
- Transmission Parameter
- Constellations : 4QAM NR, 4QAM, 16QAM, 32QAM - Guard Interval : PN420, PN595, PN945 (Frame Header) - Bandwidth : 5, 6, 7, 8 - Time Interleaver : 240, 720
Function Options
AWGN Module(FM-203)
- C/N range : 0 ~ +45dB
- C/N resolution : 0.1 dB Steps
- Noise Band Width : 0 ~ 10MHz
RF Specifications
- Output Connector : N Type
- RF Output Frequency : 50~870 MHz (VHF/UHF)
- RF Frequency Resolution : 1Hz
- Frequency Accuracy : 3 x 10-6 / 25 ℃
- RF Power Level : -110 ~ 0dBm
- RF Level Resolution : 0.1dB steps
- RF Level Accuracy : ±0.5dB relative to the level at 18-33 ℃
- RF Impedance : 50 Ω
General Specifications
- Power supply : AC 100 to 250V, 50/60Hz
- Power consumption : Less than 300W
- Operating temperature : 10 to 40 ℃
- Operating humidity : 20 to 85% RH (No Condensation)
- Storage temperature : -40 to +70 ℃ / 20 ~ 85% RH
- Operating environment : Indoor
- Operating attitude : Around 2000m
- Over-voltage category : II
- Pollution degree : 2
- Dimensions : 435(W) x 231.8(H) x 519.7(D) mm
- Weight : Approx.17Kg (Not including options)
OS system
User interface system
- 10.4 inch TFT color LCD (1024 x 768)
- Touch Screen
External Interface system
- USB Interface : USB HDD, USB Stick
- Remote Control : RS-232C
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