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Which of the following device was used in early TDM/PAM telemetry systems?(a) Commuter(b) Linear switch(c) Logic gates(d) DSP |
Answer» The correct choice is (a) Commuter Easy explanation: Multiplexers in early TDM/PAM telemetry systems used a form of rotary switch known as a commutator. Multiple switch segments were attached to the various incoming signals while a high-speed brush rotated by a dc motor rapidly sampled the signals as it passed over the contacts. |
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