FIELD OF THE INVENTION
The present invention relates to this Film Traction Module (FTM) used in
Electronic display system. It provides a colored topographical map display annotated
with suitable navigation parameters like Aircraft tracking, present position, destination
position, alphanumeric readouts of time to go, distance to go, heading altitude etc.
BACKGROUND OF THE INVENTION
During the testing of Electronic display system following defects are frequently
observed in FTM test equipment
a) Film leader broken at the ends.
b) Misalignment of film.
c) Film leader is coming out of the spool.
d) Hunting of the film.
The above said problems are mainly due to the variations in setting the null
position of the resolver.
The reliability of electronics assemblies exposed to severe working environments
has been tested. It is to provide a facility to facilitate the null setting of the X- resolver and
provide perfect alignment of the reference pulse with available input pulse.
FTM module contains the three-servo mechanism (X, Y, θ) which position the film,
the optical system and the film gate mechanism. The x mechanism consist of the along
film drive components, the film spools, the position sensing sprocket and the tree speed
resolver train. This is mounted within the Y mechanism, which moves traversely with
respect to the film with its own motor and position sensing resolver along a set of guide
rails. The rails are mounted on a large gear driven by a fixed motor and with its position
sensing resolver forming the θ mechanism connectors to the X, Y mechanism are via a
reliable and compact assembly called slip ring.
SUMMARY OF PRESENT INVENTION
In accordance with one aspect of present invention is to provide FTM test
equipment that facilitates effective testing of the vehicle system.
In accordance with second aspect of present invention is to provide compact test
equipment.
In accordance with yet another aspect of present invention is to provide an
apparatus that facilitate to null setting of the X- resolver.
In accordance with yet another aspect of present invention is to provide an output,
which is directly fed to the unit under test without any change in technical parameters.
Annexure‐II
In accordance with yet another aspect of present invention is to provide a perfect
alignment of the reference pulse with available input pulse.
In accordance with yet another aspect of present invention, it can be used in other
equipments, where such type alignment of the output pulse with reference pulse is
required without any phase shift.
Briefly an advantage of the present invention is capable to permanently reduce
the misalignment of film in FTM and it is also reduced hunting of the film.
BRIEF DESCRIPTION OF THE DRAWINGS
The features and advantages of the present invention will become more apparent
and descriptive in the description when considered together with figures presented:
Fig. 1 is a block diagram of FTM test set
Fig. 2 is a front view of the FTM test set
DETAILED DESCRIPTION
Referring to Fig. 1 & 2 the present invention is a FTM test set.
FTM test equipment is designed to support to test system to provide a perfect
alignment of the reference pulse with available input pulse.
Fig. 1 shows the block diagram of the test set, the diagram have an input supply
along with an indicator & fuse protection. A step down transformer used for decreasing
the voltage, which is used in PCB. The output generated by PCB is provided to the Front
Penal of the test equipment with the help of BNC cables along with course, medium &
fine potentiometer on the front penal of the FTM test set. Above test set is connected to
the LRU with the help of connector.
Fig. 2 shows visual look of the FTM test set along with front panel. The front panel of test
set consists of:
a) ON/OFF switch
b) Lamp indicator
c) BNC socket (Reference output)
d) BS-2 socket (Ground)
e) Course Potentiometer
f) Medium Potentiometer
g) Fine Potentiometer

WE CLAIMLS:-
ccordingly, the description of the present invention is to be considered as illustrative only and is for the purpose of teaching those skilled in the art of the best mode of carrying out the invention. The details may be varied substantially without departing from the spirit of the invention, and exclusive use of all modifications which are within the scope of the appended claims is reserved. We Claim

1. This FTM (Film Traction Module) is used in Electronic Display system. It provides a colored topographical map display annotated with suitable navigation parameters like Vehicle tracking, present position, destination position, alphanumeric readouts of time to go, distance to go, heading altitude etc.

It system has the following equipments:
- ON/OFF switch
- Lamp indicator
- BNC socket (Reference output)
- BS-2 socket (Ground)
- Course Potentiometer
- Medium Potentiometer
- Fine Potentiometer
- Unit Interfacing looms of the test set
- Internal looms of the set
- Oscilloscope for different parameters

2. The FTM of claim 1 wherein, the various following problems can be resolved
a) Film leader broken at the ends.
b) Misalignment of film.
c) Film leader is coming out of the spool.
d) Hunting of the film.

3. The FTM of claim 1 wherein, the variations in setting the null position of the resolver is carried out successfully.

4. The FTM of claim 1 wherein, it provides all inputs to resolver and the output can be monitored at the given points on an oscilloscope.

5. The FTM of claim 1 wherein, it controls the three-servo mechanism (X, Y, theta) which position the film, the optical system and the film gate mechanism.

6. The FTM of claim 1 wherein, it is mounted with in The Y mechanism, which moves traversely with respect to the film with its own motor and position sensing resolver along a set of guide rails.

7. The FTM of claim 1 wherein, it provides an output, which is directly fed to the unit under test as such no technical parameter gets updated or altered.

8. The FTM of claim 1 wherein, it is capable to permanently reduce the misalignment of film in FTM and it is also reduced hunting of the film. ,TagSPECI:As per Annexure-II