电视信号分析仪 / Sefram7851C DVB-T/S/C
瑞徽电子（上海）有限公司
上海市徐汇区宜山路822号218室
产品属性
图文详情
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品牌/型号
法国 Sefram/Sefram7851C DVB-T/S/C
是否提供加工定制
否
类型
电视频谱分析仪
显示方式
见表
重量
2.1（kg）kg
覆盖频率
见表（MHz）MHz
外形尺寸
205*90*290mm（mm）mm
| 特点 |
 6.5英寸彩色液晶显示器 | 重量仅2.1公斤 | ||
| 可显示电视节目图象 | 支持DVB-T，DVB-C，DVB-S及DVB-S2 | ||
| 超高速高质量频谱分析 | OSD，PID支持 | ||
| 支持GPS | 超高灵敏度 |
| 规格 |
| Technical Specifications | -- | Terrestrial Band | Satellite Band |
| Frequency | Range | 45-865MHZ | 950-2150MHZ |
| Resolution | measure 25KHZ,display 1KH | measure 25KHZ,display 1KH | |
| Level measurements | Dynamic range | 20-120dBuv | 30-110dBuv |
| Noise floor level | 5dBuV typical | -- | |
| Units | dBuV,dBmV,dBm,V | dBuV,dBmV,dBm,V | |
| Accuracy | ±2dB±0.05dB/℃ | ±3dB±0.05dB/℃ | |
| Resolution | 0,1dB | 0,1dB | |
| Filters | automatic with selected 1 | -- | |
| Input | BNC 75ohm | BNC 75ohm | |
| Max.permissible voltage | 80VDC,80Vrms/50HZ | 80VDC,80Vrms/50HZ | |
| Standards | B,G,D,K,I,L,M,N,FM,carrie | PAL,SECAM,NTSC,DVB-S,DVB- | |
| Measurements | V,C/N,V/A1,V/A2according | RF,C/N | |
| Uitra fast spectrum analy | Sweep time | 100ms typ.(10 times/s) | 100ms typ.(10 times/s) |
| Filters | automatic with selected s | 1MHZ | |
| Attenuator | automatic with selected f | automatic 0to60dB/5dBstep | |
| Dynamic | 60dB(10dB/p),30dB(5dB/d | 60dB(10dB/p),30dB(5dB/d | |
| Span | 10MHZ to full span with 1 | 50MHZ to full span with 1 | |
| Measurement map | Capacity | scrolling of 12 programs | -- |
| Display | graphical or text | -- | |
| Checksat mode | 1 | -- | fast search of satellite, |
| 2 | -- | 30 satellites typical,wit | |
| 3 | -- | 4 transponders/satellite, | |
| Memory | saving | internal,non,volatile mem | internal,non,volatile mem |
| Data | place,measure(level,BER/M | place,measure(level,BER/M | |
| Capacity | 512Ko(max.1000files or fl | 512Ko(max.1000files or fl | |
| Auxiliary inputs and outp | USB interface | mini USB connector | mini USB connector |
| Power supply | jack 5.5mm,15Vmax,5Amax | jack 5.5mm,15Vmax,5Amax | |
| Remote supply and control | Voltage | 5/13/18V,500mA max | 13/18V,500mA max |
| Diseqc | -- | Diseqc1.2 | |
| 22KHZ | -- | 22KHZ,Minidiseqc.toneburs | |
| Digital measurements | 1 | C-OFDM | DVB-S,DVB-S2 |
| Bit error ratio | CBER(before viterbi)VBER( | CBER,VBER,UNC,LDPC,BCH,PE | |
| Modulation Error Ratio(ME | 5-35dB | 0-20dB | |
| Symbol rate(1) | -- | 1-45Ms/s | |
| Bandwidth | 6MHZ,7MHZ,8MHZ | -- | |
| Constellation | automatic | QPSK and 8PSK | |
| Viternbi rate | automatic | ||
| automatic | 1/2,2/3,3/4,5/6,7/8,8/9,9 | ||
| Standards(1) | EN 300-744 | EN 300-421 EN302 307 | |
| 2 | NICAM | QAM | |
| Frequency/Bit error ratio | 45-865MHZ | BER(before reed solomon)U | |
| Standard/MER | B,G,D,K,I,L | 20-40dB | |
| Error measurement/constel | BER(parity) | automatic | |
| Symbol rate(2) | 728Kbits/s | 5-7Ms/s | |
| Standards(2) | EN 300-163 | ITU J83-AppendixA and B | |
| TV picture display | Analogue programs | yes | -- |
| Digital programs(free to | yes,C-OFDM | yes | |
| Impuise response | Dynamic | 20dB | -- |
| Units | us,Km,miles | -- |
