PRITHVI SINGH BHATIVII SEM EEM.E.C.R.C, JODHPUR

SUMMER PRACTICAL

TRAINING

AT

ITI BANGALORE-16

PREFACEPractical Training is a way to success in technical excellence with professionalism.I have gained practical knowledge by attending the Implant Practical Training session from INDIAN TELECOM INDUSTRY, Bangalore, during the period of 14-05-2010 to 11-

06-2010 in the following areas:

Research & Development Switching Access Products Telephone Defense Products Information TechnologyI am highly benefited by completing this summer Training.

ACKNOWLEDGEMENT

I am very grateful to my esteemed professors of M.E.C.R.C. who have given their best critics & inspired me to work hard for the Implant Practical Training.

After that I would like to thank T. Krishnadas Rai (Chief Manager-HR[ED]) , ITI Limited, Dooravaninagar, Bangalore-16 for believing me & providing enriched practical knowledge.

I am highly thankful to my parents & my dear friends who supported me in completing this training.

CONTENTS

Switching Transmission Power supply SCADA SMPS PCB Plant Defence

MOBILE COMMUNICATION

GSM CDMA

Base Trans-Receiver Station (BTS) “BTS A-9100”, is radio frequency mobile communication product based on GSM technology.

It is a set of equipments that facilitates wireless communication between user equipment (UE) and a network. 

GSM PRODUCTS

Code division multiple access (CDMA) is a channel access method utilized by various radio communication technologies.

CDMA employs speared-spectrum technology and a special coding scheme.

Allows multiple users to be multiplexed over the same physical channel.

CDMA PRODUCTS

SOLAR PHOTO VOLTAIC POWER SUPPLY

Uninterrupted Power Source Unmanned Operation Powers small exchanges & other telecom equipment Low running cost Noise free, pollution free & maintenance free 100% protection from environmental conditions Long Life Modular Design Used for Rural Radio Telephones, Power Plants, Road Traffic

Signals, Railway Signals

SCADASupervisory Control And Data Acquisition

Control & analysis of real time data LAN based control & remote terminals Database Management Applications:

-Railway Traction Power Control-Power Distribution Networks-Process Control, Steel, Coal & Water Management

SMPS(Switch Mode Power Supply)

It is used for telecom stations. Exchange, Transmission equipments,

Cellular, Microwave, Expanded by adding racks. Convection cooling, operation up to 60°C. Configurable to work with Lead Acid Battery

also, apart from Valve Regulated Lead Acid Battery (VRLA).

PCB PLANT

PROCESS: A size of 2.4mm is cut to make a motherboard with c=17.5µΏ. Copper clad lamination. CNC Drilling (Comportised Numerical Control) PTH (Plated through hole) & Panel Plating Photo resist lamination (120°C temp.) UV Exposing Developing (30°C temp.) Electro Copper pattern plating (17.5µΏ) Tin pattern plating Resist Stripping (casting soda & water on 50°C) Etching (Ammonia Sulphate at 50°C) Tin Stripping (HNO3 AT 105°C) Solder Mask Coating (Tin & Lead mix & heat at 250°C) Solder Mask Developing (40°C) HAL (Hot Air Leveling) Legend Marking/ Legend Print (Excellence Automation)