1. TV Optical Head Description : TV Optical Head GIG No. : 348479
Sec Ref No. : 810PGW
Part No. : G
Cost : Rs. 10, 92, 720/-(Assessed)
7B/PECHORA/SNR-125/PR/01/06-11 Qty-07
(1st & 2nd line servicing requirement)

2. COMPOSITION OF TV OPTICAL TRACKER
TV optical tracker used in Pechora (MGR) is comprised of the following components:
(a) Optical section (Optical head)
(b) Light to signal converter (vidicon tube)
(c) Video channel
(d) Signal to light converter (picture tube )
(e) Scanning devices &
(f) Synchronizing device

3. FUNCTION OF THE ITEM
To enhance the operational capability of Pechora (MGR) under anti radiation missile attack and EW environment, Pechora MGR has been provided with
facility for optical tracking of the target.

4. LOCATION ON THE MAJOR ASSEMBLY
TV camera is located on the YHB post
And
display units in the cabin.

5. ROLE IT PLAYS
TV optical system is intended for observations of remote objects and determination of their angular co-ordinates. There are two types of CC TV namely 9 Sha 33 A and 9 Sha 38-1 used in Pechora MGR. 9 Sha 38-1 TV optical tracking system is also used in OSA-AK & SPAGU weapon system of Army.

6. LOAD IT TAKES 220 V±5%, 400Hz±2.5% ±27V±10% Power Consumption:-
Max 450VA for 220V 400Hz mains
Max 200W for 27V mains

7. THE EFFECTS OF ITS FAILURE
During Anti Radiation Missile attack and EW environment the target can not be tracked without the help of TV system.

8. NON-FEASIBLE/COMPLEX OR DIFFICULT
ASPECTS THAT MAKE IT
NON-FEASIBLE/COMPLEX OR DIFFICULT
FOR INDIGENISATION
Adaptability to the existing Radar system and availability of a system which has night/ IR capability and limitations of tracking range.

9. TECHNICAL AND FUNCTIONAL
SPECIFICATIONS

10. SL No
CHARACTERISTICS
SPECIFICATIONS
REMARKS a.
Temperature range:-
-40 deg C to + 50 deg C b.
Relative humidity
95 to 98 % at a temperature of +20 deg C ± 2 deg C c.
Field of vision angle
Narrow - 1°27’ x 1°5’
Area covered in space will be 1°27’x 1°5’
Wide °50’ x 3°38’
Area covered in space will be 4°50’ x 3°38’ d.
Vertical resolution
At centre – 500 lines
At corner – 450 lines
It is a distinction between rasters in the test chart at centre which is 500 lines and at corner 450 lines to give a clear display

11. SL No
CHARACTERISTICS
SPECIFICATIONS
REMARKS e.
Horizontal resolution
At centre – 600 lines
At corner – 500 lines
It is a distinction between rasters in the test chart at centre ,which is 600 lines and at corner 500 lines to give a clear display f.
Warm up time
03 minutes
It is to provide sufficient warming up time after application of filament voltages to vidicon and CRT before the application of high voltages at their respective electrodes and thus increase the life of vidicon and CRT

12. SL No
CHARACTERISTICS
SPECIFICATIONS
REMARKS g.
Permissible continuous operation
12 hours
Parameters may get deviated if operated continuously beyond 12 hours h.
Magnification factor
Narrow – F = 500mm – 14.75
Wide F = 150mm – 4.4 j.
Maximum distance between the centre of cross line and test chart on monitor screen
15 mm

13. SL No
CHARACTERISTICS
SPECIFICATIONS
REMARKS k.
Adjustment of TV camera with respect to the mounting flat
(a)In horizontal direction - ± 2°
(b)In vertical direction - ± 2°
Mechanical adjustment for TV allignment l.
Supply voltage
220 v ± 5% , 400 Hz ± 2.5 %
± 27 V ± 10% m.
Power consumption
Max 450 VA for 220 V 400Hz
Max 200 W for 27 V mains

14. LIMITATIONS
TV camera can not be operated during night due to its limitations which affects the operational capability of the squadron during night in case under ARM attack and EW environment.

15. FEATURES TO BE IMPROVED
Existing Range and field of vision of
angle needs to be improved.
(b) Resolution needs to be improved.
(c) Night operation facility needs to
be incorporated.
(d) Operating temperature range, relative humidity and continuous operation limit should be at least as per existing system.

16. FUTURE REQUIREMENTS
If night operation facility can be successfully incorporated, the complete Pechora & OSA-KA fleet will require the new system. Considering the number of FUs of Pechora and OSA-AK, the requirement may be 50 No.s of cameras.

17. FILTER & TEST CHART CHANGE OVER ASSEMBLY

20. CIRCUIT OF TV OPTICAL HEAD

21. MAIN LENS

22. MAIN LENS

23. BLOCK OF PRISM

24. MAGNIFICATION CHANGE OVER ASSEMBLY

26. COVER OPENING MECHANISM

27. OUTLINE OF TV CAMERA

30. BACK TO LIST