全固態(tài)電視發(fā)射機
全固態(tài)電視發(fā)射機
ALL-SOLID-STATE TV TRANSMITTER
特點：全固態(tài)電路設計，穩(wěn)定性好，可靠性好。
圖像、伴音合放式，模數(shù)兼容，有利于向數(shù)字電視發(fā)射機轉換。
新一代電視激勵器，品質優(yōu)，性能好，功能齊全。
具有完善的視頻箝位，白限幅，視頻AGC，同步脈沖引伸和非線性校正功能。
帶有中頻AGC、射頻ALC和互調校正電路。
功放模塊均采用進口大功率LDMOS管，頻帶寬、線性好、冗余量大，互換性強。當某個模塊出現(xiàn)故障，其它模塊仍能正常工作，確保正常播出。
具有過壓、過流、過殷及駐波比過大等自動保護功能，工作安全可靠。
直觀的大屏幕液晶顯示，良好的人機界面，便于操作、維護和故障判斷。
帶有RS485并行通訊接口，可實現(xiàn)發(fā)射機的遠程遙測、遙控。
根據(jù)需要，可按雙激勵器配置，并實現(xiàn)主、備自動切換。
采用開關電源供電，體積小，效率高，穩(wěn)壓范圍寬。
采用強迫風冷，功耗小，噪聲低。
整機采用19″標準機柜，組件式結構，造型美觀大方。
各項指標均優(yōu)于部頒布甲級標準。
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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