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

Oscilloscope probe compensation, Q.   what is oscilloscope probe compensati...

Q.   what is oscilloscope probe compensation and how is it adjusted?  What effects are noted when the compensation is not correctly adjustment? Direct Probe: This probe  is

Common base configuration - bjt, Common base configuration: for pap t...

Common base configuration: for pap transistor connection for common base operation is as follow: common base means base is common to both input and output side of configurati

Current relations in common emitter configuration, Q. What are the Current ...

Q. What are the Current relations in common emitter configuration? In a CB configuration Ie is the input current and Ic is the output current. These currents are relayed throug

Determine the signal at the receiver output, Q. An FM station's modulator h...

Q. An FM station's modulator has a sensitivity k FM = 5π × 10 4 rad/s·V. A receiver uses a discriminator that has a gain constant of 10 -5 /π V·s/rad. Neglecting noise, determin

Briefly explain about phasor method, Q. Briefly explain about Phasor Method...

Q. Briefly explain about Phasor Method? For sinusoidal excitations of the same frequency, the forced or steady-state responses are better found by the technique known as the ph

Show the r’s complement, Q. Show the r’s Complement? Step1- get the (r-...

Q. Show the r’s Complement? Step1- get the (r-1)'s complement Step 2- add 1 to the result ex.            935 10                                     9 9 9

Obtain the value of rs, Consider and obtain the values for R S , R 2 , R 1 ...

Consider and obtain the values for R S , R 2 , R 1 , and R D . Apply the rule-of-thumb dc design procedure outlined in this section for a JFET with V P = 3V, I DSS = 20 mA, and a

Explain quantizing analog signals, Explain Quantizing Analog Signals? ...

Explain Quantizing Analog Signals? A common analog-to-digital conversion pipeline contains a spectrum limiter (a simple low-pass or bandpass filter), a sample and hold circuit

Carry flag - registers, Carry Fla Registers  The  size  of the accumul...

Carry Fla Registers  The  size  of the accumulator is of 8 bit  if after  any arithmetical  or logical  operation 9 th   bit is generated i e  there is  carry beyond  D 7   bi

Find the sending end voltage and sending end current, A 3-phase transmissio...

A 3-phase transmission line is 200km long. The line has a per phase series impedance of 0.25+j0.45 Ω/km and shunt admittance of j7.2 μS/km. The line delivers 250MVA, at 0.6 lagging

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