through a modem and a communication channel, and the speed of the channel would not affect
the precise specification of the instant when the data were taken. Of course, the system shown
in Figure 13.10 is capable of producing far more sophisticated outputs than just the synchronized
samples. These outputs are computed from the synchronized data samples in the microprocessor
shown, and are time-tagged. This type of hardware is expected to be the basis for most digital
substation systems of the future, including digital relays, digital fault recorders and digital meters