ST300数字电视码流切换器是一款基于ASI信号的码流切换系统，能对主播节目的码流、PID、表单等进行实时监测，当系统故障、信号丢失、解扰异常或者节目异常时，可以自动切换至备用码流与节目，甚至手动紧急切换至垫播节目。

ST300 Digital TV TS switcher is a stream switching system based on ASI signal, which can monitor the stream, PID, form, etc. of the anchor program in real time. It can automatically switch to the alternate stream and program, and even manually switch to the pre-broadcast program in an emergency.

CLB satellite L-band signal optical transceiver is composed of an optical transmitter and an optical receiver. It mainly converts all the L-Band analog or digital satellite signals (SAT-IF) received by the satellite receiving antenna high-frequency head LNB into optical signals. Transparent, high-quality, long-distance transmission. Mainly used for aerospace satellite, military satellite, direct broadcast satellite L-Band fiber uplink/downlink.

CASI series multi-channel ASI code stream optical transceiver is composed of optical transmitter CASIT and optical receiver CASIR, which is used to transmit multiple ASI code stream signals conforming to digital TV standards.