Summary
LKX-0316 is a cost-effective 16 in 1 IP to DVB-T modulator developed according to DVB-T (EN300744) standard. It has 3*128 IP inputs. After multiplexing and modulating process, it gives 16 DVB-T non-adjacent carriers (50MHz~900MHz) output through the RF output interface. To meet customers’ various requirements, this device is also equipped with data port for 8 MPTS output over UDP and RTP. This is very adaptable to newly generation DTV broadcasting system.
Key Features
Support maximum 3*128 IP input (MPTS/SPTS) over UDP and RTP protocol
Support 8 MPTS over UDP/RTP output
Support 16 groups DVB-T modulating (ISDBT ATSC DVB-C optional) Support 6 Serial TS Input (Any Multiplex), 6 ASI input Support DVB-T RF :50~900MHz output Integrated multiplexing and modulating functions Support accurate PCR adjusting/PID Remapping/PSI/SI rebuilding and editing Web-based NMS management
Specification
Modulation | Standard | EN300744 | ||
FFT mode | 2K | |||
Bandwidth | 6M, 7M, 8M | |||
Constellation | QPSK、16QAM、64QAM | |||
RF out | 16 carriers DVB-T | |||
RF frequency | 50~900MHz,1kHz step | |||
RF output level | -24dBm~0dBm | |||
MER | ≥40db | |||
Guard Interval | 1/4, 1/8, 1/16, 1/32 | |||
FEC | 1/2, 2/3, 3/4, 5/6, 7/8 | |||
IP Input | 3*128 IP(SPTS/MPTS) input over UDP and RTP, RJ45,1000M/100M, Unicast/Multicast | |||
System | LCD/Keyboard operating and web-based NMS support | |||
Ethernet software upgrading | ||||
General | Dimension (W*D*H) | 482mm×340mm×45mm | ||
Temperature | 0~45℃(work);-20~80℃(storage) | |||
Power supply | AC 110V±10%,50/60Hz |
PBI 4000MUV 广播级全频道捷变式邻频调制主机
PBI 模拟前端
接口规格
输出频率 48MHz~870MHz (Ch1~Ch56, Z1~Z43频道连续可调)
图像载频准确度 ≤±5KHz (VHF); ≤10KHz (UHF)
射频输出频率微调范围 最大±4MHz (0.5MHz步进)
图像载频输出电平 115dBμV
RF输出电平调节范围 0 ~ -20dB
图像/伴音功率比 10~20dB
连续可调输出阻抗 75Ω
射频输出端反射损耗 VHF:≥12dB,UHF:≥10dB 带内
寄生输出抑制比 ≥60dB
邻频抑制比 ≤-45dB
中频图像频率 38MHz
中频伴音载频 31.5MHz
中频输入,输出阻抗 75Ω
图像中频输入,输出电平 95dBμV
视频输入电平 1.0Vp-p调制度为 87.5%
微分增益 ≤5%
微分相位 ≤5°
色度/亮度时延差△τ △τ≤45ns
视频箝位能力 ≥26dB
视频输入形式 正极性图像合成信号
视频带内平坦度 ≤±2dB
视频调制度范围 0~90%连续可调
视频输入阻抗 75Ω
视频信噪比(S/N) ≥45dB(10KHz~5MHz,4.43 MHz陷波,非加权,调制度为87.5%)
2T脉冲K系数K2t ≤4%
音载调制频偏 ±50KHz(音频输入电平范围:0 dBm±6 dBm)
音频副载波频率 6.5MHz±1KHz
音频谐波失真 ≤1%
音频频率响应 ±1.5dB (40Hz~15KHz,基准频率为1K Hz )
音频输入阻抗 600Ω
音频信噪比 ≥55dB
音频预加重 50μs
电源供电 AC 220V 50Hz 20W
工作环境温度 5~40°C
工作环境湿度 ≤85%
工作环境大气压 86~106Kpa
体积 483mmx320mmx45mm
重量 4Kg