这基本上是一个脉幅调制/调频系梳,它对众多的模拟信号进行取样,并按比例地对遥测副载波进行调制。一个副载波用于取样信号,另两个用于对事件信号进行实时传输。遥测编码器的基本积木式部件是:一个用作取样和序列时间控制的电子交换子,几个用作缓冲、信号相加和混频的运算放大器,以及产生副载波并把调幅变为调频的压控振荡器。 This is basically a pulse modulation / frequency comb, which samples a large number of analog signals and proportionally modulates telemetry subcarriers. One subcarrier is used to sample the signal and the other two are used to transmit the event signal in real time. The basic building blocks for telemetry encoders are: an electronic commutator for sample and sequence time control, several op amps for buffering, signal addition, and mixing, as well as subcarrier generation and FM to FM VCO.