全固态电视发射机
全固态电视发射机
ALL-SOLID-STATE TV TRANSMITTER
特点：全固态电路设计，稳定性好，可靠性好。
图像、伴音合放式，模数兼容，有利于向数字电视发射机转换。
新一代电视激励器，品质优，性能好，功能齐全。
具有完善的视频箝位，白限幅，视频AGC，同步脉冲引伸和非线性校正功能。
带有中频AGC、射频ALC和互调校正电路。
功放模块均采用进口大功率LDMOS管，频带宽、线性好、冗余量大，互换性强。当某个模块出现故障，其它模块仍能正常工作，确保正常播出。
具有过压、过流、过殷及驻波比过大等自动保护功能，工作安全可靠。
直观的大屏幕液晶显示，良好的人机界面，便于操作、维护和故障判断。
带有RS485并行通讯接口，可实现发射机的远程遥测、遥控。
根据需要，可按双激励器配置，并实现主、备自动切换。
采用开关电源供电，体积小，效率高，稳压范围宽。
采用强迫风冷，功耗小，噪声低。
整机采用19″标准机柜，组件式结构，造型美观大方。
各项指标均优于部颁布甲级标准。
FEATURES：
All-solid-state circuit design with high stability and reliability.
Combined amplification of video & audio carrier, analog &digital ignal compatibli, which is easy to transform into digital TV transmitter.
Updated exciter with high quality & performance, and full function.
Perfect video clamp, White slice, Video AGC, Synchronous impulse amplification and non-linear emendation function.
Whith IF AGC,RF ALC, and inter-modulation circuit.
All amplifiter modules are adopted imported hi-power LDMOS transistors,which have wide frequency band,good linearity,high
redundancy and interchangeable,When malfunction happens in one module,the other can still work normally and ensure unfailing broadcasting.
Complete over-current,over-voltage,over-heat,and high VSWR automat
ic protection
Straightforward LCD digital displays is also available and comvenient for operation,maintenance and troubleshooting.
Provide RS485 parallel port transmitter remote monitoring and controlling.
Provide dual exciters for optional demands,main exciter and backup exciter can be switched automatically.
Small size and high efficient switching power supply with wide voltage range.
Forced wind cooling by low power waste and low noise blower.
Dignified and elegant 19"standard cabinet with module structue.
All technical speeifications can meet or exceed the national A class standard.
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