20-07-2013, 02:58 PM
TO STUDY THE TECHNIQUE GENERATION OF TDM DATA
AIM:
The aim of the experiment is to study the technique of generation of TDM data.
THEORY:-
The TDM transmission consists of three basic clock and timing signals on the basis of TX channel &
information.
1. Data clock: Determines maximum data rate of channels
2. Mux clock: Determines time slot for each channel.
3. Frame Clock: Determines no of channels to be multiplexed
MARKER IN TDM:-
Marker used in TDM is a unique bit pattern placed at some fixed position in the frame & is used to
determine the start of the frame at the receiver.
SWITCHING FAULTS
1. Put switch in SF1 to ON. This will open the Tx-marker signal at input U9.
2. This means that the channel one is removed at the mux section.
3. No marker is transmitted and hence the receiver synchronization is disturbed.