What is time switches, Electrical Engineering

Assignment Help:

Q. What is Time Switches?

Principle of a time switch is displayed in Figure. It connects an incoming n channel PCM highway to an outgoing n channel PCM highway. As any incoming channel can be connected to any outgoing channel, its equivalent to space division cross point matrix with n incoming and n outgoing trunks, as displayed in Figure. Time-slot interchange is carried out by means of two stores, each having a storage address for every channel of PCM frame. The speech store contains the data of each of the incoming time-slots (that is its speech sample) at a corresponding address. Each address of connection store corresponds to a time slot on outgoing highway. It comprises the number of time-slot on the incoming highways whose sample is to be transmitted in that outgoing time-slots. Information is read into speech store cyclically in synchronism with the incoming PCM systems; though, random access read out is used. Connection store has cyclic read out however writing in is non-cyclic. To establish a connection, number (X of the time-slot of an incoming channel is written into the connection store at the address corresponding to the selected outgoing channel (Y).During each cyclic scan of speech store, incoming PCM sample from channel X is written into address X. During each cyclic scan of connection store, number X is read out at the beginning of time-slot Y. This is decoded to select address X of speech store, whose contents are read out and sent over the outgoing highway.

1889_What is Time Switches.png


Related Discussions:- What is time switches

Sketch the phasor diagram, Consider an RLC series circuit excited by v (t) ...

Consider an RLC series circuit excited by v (t) = 100√2 cos 10t V, with R = 20 , L = 1 H, and C = 0.1 F. Use the phasor method to find the steady-state response current in the cir

Illustrate about full duplex transmission, Q. Illustrate about Full Duplex ...

Q. Illustrate about Full Duplex Transmission? Full Duplex Transmission Data can travel in both directions simultaneously. There is no need to switch from transmit to receive

Explain emergency repairs to rail fracture, Q. Explain Emergency Repairs to...

Q. Explain Emergency Repairs to rail fracture? Emergency Repairs - The fractured rails shall be joined by using the arrangements clamps, fish plates. If the gap at fracture doe

Total harmonic distortion, Q. Explain the term total harmonic distortion. D...

Q. Explain the term total harmonic distortion. Describes the functionary of a total harmonic distortion analyzer. Total Harmonic Distortion: Nonlinear behaviors of circuit el

Revenue protection and technology interventions in metering, Revenue Protec...

Revenue Protection and Technology Interventions in Metering The power supply industry has reached an impasse where urgent steps are needed to improve the financial health of t

Show operation on jfet, Q. Show Operation on JFET? The junction in the ...

Q. Show Operation on JFET? The junction in the JFETis reverse-biased for normal operation.No gate current flows because of the reverse bias and all carriers flow from source to

Current source inverter , Current  Source Inverter (CSI) Current  sour...

Current  Source Inverter (CSI) Current  source  inverter has constant  input  but it  can be  adjusted. In CSI  the amplitude of output  current is  independent of load. The lo

Ani immediate with accumulator instruction , ANI AND Immediate  with Accum...

ANI AND Immediate  with Accumulator Instruction 8 bit  data specified  in the  instruction is logically  AND with the  contents  of the  accumulator. The result is stored  in

Electrical drives and actuators, 'Electric drives' is a term used to descri...

'Electric drives' is a term used to describe DC and AC electric motors that provide continuous rotarmotion. They are often controlled by 'electronic drivesystems' designed to contr

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd