Consumer Electronics

TWO-CHANNEL TDM SYSTEM

The principle of a simple two-channel TDM system is illustrated in Fig. 39.18. Analog inputs are considered for clarity. TDM is, of course, normally a means of multiplexing digital signals, such as PCM pulses, all having the same amplitude.

 

 

Fig. 39.18 A simple two-channel TDM system: t₁ = a series of pulses occurring at fixed intervals; t₂ = a series of pulses occurring at the same periodicity as t₁ but commencing later by an amount equal to half the time interval

 

The two channels, which are to share the common circuit, are each connected to it via a channel gate. The channel gates are electronic switches which permit ...