03-10-2012, 03:58 PM
TIMS-301 USER MANUAL
[attachment=35161]
INTRODUCTION
TIMS OVERVIEW
TIMS is a telecommunications modelling system. It models mathematical equations representing
electrical signals, or block diagrams representing telecommunications systems.
TIMS is primarily a hands-on rather than demonstration style teaching system, which combines
both the theoretical and practical aspects of implementing systems. We are confident that TIMS
will provide the student with a clearer understanding of the concepts behind telecommunications
theory.
Physically, TIMS is a dual rack system. The top rack accepts up to 12 Eurocard sized, compatible
"black boxes", or modules. The lower rack houses a number of fixed modules, as well as the
system power supply.
B - PLUG-IN MODULES
Any plug-in module may be placed in any of the 12 positions of the upper rack. All modules use
the back plane bus to obtain power supply : only the DSP modules (not part of the BASIC SYSTEM)
use the bus to transfer signals. The modules are designed so that they may be plugged-in
or removed at any time, without turning off the system power. The modules are not locked
into position and may need to be held while interconnecting leads are removed.
C - LABELLING
All modules are identified as to the function they perform.
Inputs, outputs, controls and switches are labelled so that a student who has had only a brief introduction
to TIMS can use the modules without needlessly referring back to this USER
MANUAL.
It should be noted that no variable controls have calibration marks. This is intentional, as the philosophy
behind TIMS is that students setup and adjust systems by observing and measuring signals.
This assists the student in gaining a much greater understanding, feel and insight into the
operation of a communications implementation.
USE
Care must be taken when adjusting the gains to avoid overloading the following modules. Overloading
will not cause any damage but it means non-linear operation, which is to be avoided in
analog systems. The ADDER is capable of delivering a signal well in excess of the standard reference
level, 4V pk-pk, given a standard level input.
The ADDER can also be used as a normal amplifier by using only one input and turning the gain
of the other input to minimum. It is not necessary to ground the unused input.
Note that gains G and g are negative. All inputs and outputs are DC coupled.
[attachment=35161]
INTRODUCTION
TIMS OVERVIEW
TIMS is a telecommunications modelling system. It models mathematical equations representing
electrical signals, or block diagrams representing telecommunications systems.
TIMS is primarily a hands-on rather than demonstration style teaching system, which combines
both the theoretical and practical aspects of implementing systems. We are confident that TIMS
will provide the student with a clearer understanding of the concepts behind telecommunications
theory.
Physically, TIMS is a dual rack system. The top rack accepts up to 12 Eurocard sized, compatible
"black boxes", or modules. The lower rack houses a number of fixed modules, as well as the
system power supply.
B - PLUG-IN MODULES
Any plug-in module may be placed in any of the 12 positions of the upper rack. All modules use
the back plane bus to obtain power supply : only the DSP modules (not part of the BASIC SYSTEM)
use the bus to transfer signals. The modules are designed so that they may be plugged-in
or removed at any time, without turning off the system power. The modules are not locked
into position and may need to be held while interconnecting leads are removed.
C - LABELLING
All modules are identified as to the function they perform.
Inputs, outputs, controls and switches are labelled so that a student who has had only a brief introduction
to TIMS can use the modules without needlessly referring back to this USER
MANUAL.
It should be noted that no variable controls have calibration marks. This is intentional, as the philosophy
behind TIMS is that students setup and adjust systems by observing and measuring signals.
This assists the student in gaining a much greater understanding, feel and insight into the
operation of a communications implementation.
USE
Care must be taken when adjusting the gains to avoid overloading the following modules. Overloading
will not cause any damage but it means non-linear operation, which is to be avoided in
analog systems. The ADDER is capable of delivering a signal well in excess of the standard reference
level, 4V pk-pk, given a standard level input.
The ADDER can also be used as a normal amplifier by using only one input and turning the gain
of the other input to minimum. It is not necessary to ground the unused input.
Note that gains G and g are negative. All inputs and outputs are DC coupled.