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CONTENTS
1. Company Introduction
2. 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 on
Multi-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 resist
Cover 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

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Ranjan Gupta

  • 1. CONTENTS 1. Company Introduction 2. Main Products Manufacturing  Printed Circuit Boards  Multiplexer  Digital Radio Relay Systems  Optic Fiber Line Terminating Equipment (OLTE)  Microwave Radio  Other Telecom Equipments
  • 2. 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.
  • 3. 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.
  • 4. 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
  • 5. 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)
  • 6. Multi-layer PCBs • Similar process as single layer, but takes several steps Schematics and features on Multi-layer PCB’s
  • 7. PCB Assembly - Insert leaded component into holes on PCB - Solder - Protective coating Manual electronics assembly Automated electronics assembly
  • 8. Automated PCB Assembly Component inputs: Leaded Component IC’s, components with no wire leads
  • 9. 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
  • 10. Automatic soldering Step 1. Application of the solder resist Cover PCB with solder resist except Lands Land Step 2. Flux application Foam fluxing Spray fluxing Ultrasonic Spray fluxing
  • 11. 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
  • 12. 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
  • 13. 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