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

Armature winding - motor control , Armature Winding In this  winding t...

Armature Winding In this  winding the working  emf is induced by the working  flux. The current  which is  dependent on the load  called current.  The windings  that handle

Multi-link connection in a network of register, Q. Multi-link connection in...

Q. Multi-link connection in a network of register? For a multi-link connection in a network of register- controlled exchanges, a register in originating exchange receives addre

Determine the node voltage by using kcl, Determine the node voltage by usin...

Determine the node voltage by using KCL: Determine the node voltage V and then current flowing through each element by using KCL. Solution Apply KCL at the node whose

Determine the total energy loss, Determine the total energy loss: Two ...

Determine the total energy loss: Two capacitors C 1 = 50 μF and C 2 = 100 μF are connected in parallel across 250 V supply. Determine the total energy loss. Figure

Sketch the timing diagram for a 4-bit ripple counter, Q. Sketch the timing ...

Q. Sketch the timing diagram for a 4-bit ripple counter which uses T flip-flops.

Estimate the required bandwidth using Carson''s rule, A 10-kHz tone is used...

A 10-kHz tone is used to frequency modulate a carrier; the peak deviation is 75 kHz. Use Carson''s rule to estimate the bandwidth.

Merits and demerits of fixed bias with emitter resistor, Merits: The ci...

Merits: The circuit has the trend to stabilize operating point against changes in temperature and β-value. Demerits: In this type of circuit, to keep I C  independent o

RLC circuit, A series RLC circuit consisting of resistor of 200 ohms, an in...

A series RLC circuit consisting of resistor of 200 ohms, an inductor of 0.214H and a capacitor of unknown value. When this circuit is energized by 240 i) value of capacitor ii) vol

Describe the working of binary comparator, Digital Systems 1. Describe ...

Digital Systems 1. Describe the working of Binary comparator (Magnitude comparator) a. Define Binary comparator b. Binary comparator working process with logical diagrams 2.

Closed loop block diagram into Electrical Circuit, I have a closed loop or ...

I have a closed loop or feedback system and i want to convert it into electrical circuit. please give me example about this

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