CONTENTS1. Company Introduction2. Main Products Manufacturing Printed Circuit Boards Multiplexer Digital Radio Relay Systems Optic Fiber Line Terminating Equipment (OLTE) Microwave Radio Other Telecom Equipments

Company Profile• Established in 1979, PEL is a leading SME (Small Medium

Enterprise) company in India engaged in the supply of high technology products and services with customers in Healthcare, Hi-tech, Energy, Telecom, Railways, Defense & Security and Critical Infrastructure.

Services PEL brings its unique experience in the domain areas of IT,

Telecom, Power, Data Acquisition and Security coupled with cross-functional knowledge of Electronic, Electrical, Mechanical, Civil and Marine Engineering to offer a wide range of Services including Turnkey Project Implementation, MRO and Calibration Lab to its customers.

Manufacturing With specialization in high mix low volume, PEL

undertakes Built-to-Spec and Built-to-Print Assembly & Test of Electronic (PCBA) enclosures, Electrical (PDU/ PSU, Panels) cabinets, Wire Harnesses and Telescopic Masts. We also specialize in turnkey electro-mechanical integration of vehicular shelters and trailers.

PCB Manufacture

Types of PCB's single-side, double-side and multi-layer

Which type to use ?(a) Circuit complexity(b) Available space(c) Cost

Typical PCB

insulated substrate

copper connections

protective covering

Manufacturing glass reinforced epoxy resin copper-clad boards

Boards are produced in "clean-rooms"Manufacturing process: hot-pressing

• Place copper sheet on the lower plate• Place few layers of glass cloth impregnated with epoxy on top• [IF two-sided PCB's]: Place copper sheet on above• Press between steel plates in a steam-heated hydraulic press (~7,000,000 Pa) • Water cooling to 25º C• Trim to clean out extruded epoxy

• Punch/Drill holes for alignment• Make circuit on PCB (lithography)• Drill through holes (for component leads)

Multi-layer PCBs

• Similar process as single layer, but takes several steps

Schematics and features onMulti-layer PCB’s

PCB Assembly

- Insert leaded component into holes on PCB- Solder- Protective coating

Manual electronics assembly

Automated electronics assembly

Automated PCB Assembly

Component inputs:

Leaded Component IC’s, components with no wire leads

PCB Manufacture

Surface mount chip assembly:

- Silk-screening to apply solder paste on the board - Automated assembly of components (>30,000 components per hour) - IR or Wave soldering

Automatic soldering

Step 1. Application of the solder resistCover PCB with solder resist except Lands

Land

Step 2. Flux application

Foam fluxing Spray fluxing Ultrasonic Spray fluxing

A multiplexer or mux is a combinational circuits that selects several analog or digital input signals and forwards the selected input into a single output line. A multiplexer of 2n inputs has n selected lines, are used to select which input line to send to the output.

MULTIPLEXER

Microwave radio relay is a technology for transmitting digital and analog signals, such as long-distance telephone calls, television programs, and computer data, between two locations on a line of sight radio path. In microwave radio relay, microwaves are transmitted between the two locations with directional antennas, forming a fixed radio connection between the two points. The requirement of a line of sight limits the distance between stations to 30 or 40 miles.

MICROWAVE RADIO RELAY

OLTE stands for Optical Line Termination Equipment (fiber optics)

Converting the standard signals used by a FiOS service provider to the frequencyand framing used by the PON system.Coordinating the multiplexing between the conversion devices on the optical networkterminals (ONTs) located on the customers' premises.The OLT contains a central processing unit (CPU), passive optical network cards, agateway router (GWR) and voice gateway (VGW) uplink cards.  It can transmit a data signal to users at 1490 nanometers (nm). That signal can serve up to 128 ONTs at a range of up to 12.5 miles by using optical

Other Equipment Manufacturer

TAXI METER

DISPLAY BOARD

JEWELLERY SCALES

WEIGHING INDICATORS

OTHER PRODUCTS