William C. Turbyfield

*** ******* *******

Conyers, GA 30013

770-***-****

abni8x@r.postjobfree.com

Interests

1) Digital/Analog Hardware design.

2) Software development and maintenance.

3) Project management.

Education

Georgia Institute of Technology

255 North Avenue, N.W. Atlanta, GA 30332.

Degree: B.E.E. Dates: September 1980 to June 1983

Also received certificate in Computer Engineering.

Clayton Jr. College

5900 Lee Street, Morrow, GA 30260.

Degree: A.A. Dates: September 1978 to September 1980

Work Experience

Scientific Research Corporation

2300 Windy Ridge Parkway, Suite 400 South, Atlanta, GA 30339

June 2004 to Present

Senior Systems Engineer – Functioned as technical lead in the design of avionics and military test equipment. Work involved

analog, RF and digital circuit design. Developed software in C/C++ and ATLAS. Developed VHDL code for FPGA and CPLD

digital designs.

Northrop Grumman

293 Highway 247 South, Warner Robbins, GA 31088

June 2002 to June 2004

Test Engineer – Performed investigations as part of the Material Improvement Program. Determined depot level testing deficiencies

for avionics in the F-15E aircraft.

Movaz Networks

One Technology Parkway South, Norcross, GA 30092

February 2001 to May 2002.

Member of Technical Staff - Digital hardware design and debug of processor and other circuit cards used in fiber optic systems.

Digital development performed using Verilog. Analog/Digital design of optical transceivers and other circuitry used for the Optical

Service Channel.

Nortel Networks

5555 Windward Parkway, Alpharetta, GA 30004

May 2000 to February 2001.

Hardware Design Engineer - Analog/Digital hardware design of line cards and Access Node products used in telecommunications.

Lockheed Martin Aeronautical Systems Company

86 South Cobb Drive, Marietta, GA 30063

February 1985 to May 2000.

Staff Engineer - Design of electronic ground support equipment and avionics. Work involved analog and digital circuit design along

with embedded microprocessor systems design. Developed software in various high level and assembly languages.

Military Service

United States Navy

Final Duty Station: NAS Atlanta, Marietta, GA.

July 1975 to November 1978.

Aviation Fire Control Technician - Trained in electronic technology. Major work included maintenance, testing and alignment of

airborne radar, weapons release, and related systems. Honorable discharge. Final Rank: E-5.

Resume Addendum

Previous Projects

Scientific Research Corporation:

AMRAAM Launcher Power Supply

Functioned as a technical lead involving design of a 100W switching power supply used in the AMRAAM missile launcher.

Work involved hardware design built around a digital power controller IC, along with embedded C code development to perform

additional functions. Provided inputs concerning scheduling, resource management, and budget tracking.

Receiver/Processor Tray

Performed preliminary hardware/software design of a Receiver/Processor Tray. This unit provided electrical interface between a

new Receiver/Processor and legacy aircraft systems. Work involved digital hardware design using a Xilinx Virtex-II Pro FPGA,

along with C/C++ code development.

Power Supply Test Set (PSTS)

Worked as technical lead involving hardware/software redesign of the PSTS, which was used to support depot level testing of the

ALQ-135 high voltage power supplies. Work involved digital hardware design using a CPLD, along with C/C++, and ATLAS

code development.

Northrop Grumman:

Material Improvement Program (MIP) Investigations

Performed MIP investigations to determine depot level test deficiencies for various avionic components in the F-15E aircraft.

These avionic components included the Flight Control Computer and the Avionics Interface Unit. Investigated problems from a

system level down to the circuit card level of maintenance. Made software changes and hardware modifications to the Interface

Test Adapters (ITA) as required.

Movaz Networks:

Optical Service Channel Card

Hardware debug of the Optical Service channel card, which was used in the Raystar and Raystar Express Fiber Metropolitan

Area Network System. Work involved correcting design problems and making hardware changes as needed to meet new

requirements and cost reduction. Redesign of circuitry from use of an Avalanche Photo Diode (APD) to use a PIN diode for cost

reduction.

Single Board Computer

Hardware debug of the Single Board Computer card, which was used on various Shelf Processors in the Raystar Fiber

Metropolitan Area Network System. Work involved correcting design problems in interfacing an 8260 processor to SDRAM,

and Flash memory, and assorted peripherals

Optical Add Drop Multiplexor (OADM) Shelf Processor

Hardware design of the Optical Add Drop Multiplexor Shelf Processor. This card was used in the Raystar Fiber Metropolitan

Area Network System, and was used to control the OADM shelf. Work involved digital hardware redesign, along with Verilog

code development.

Electrical Cross Connect (EXC) Shelf Processor

Hardware design of the Electrical Cross Connect Shelf Processor. This card was used in the Raystar Fiber Metropolitan Area

Network System, and was used to control the Electrical Cross-Connect shelf. Work involved digital hardware redesign, along

with Verilog code development.

Nortel Networks:

Hybrids for Multimode ADSL Line Card

Testing and design modifications to Hybrids used in a Multimode ADSL line card for the UE-IMAS (Intelligent Multifunction

Access System).

DS1/E1 Line Card

Design debug and modifications for the DS1/E1 line card used in the UE-IMAS (Intelligent Multifunction Access System).

Design modifications included digital circuitry and VHDL changes, along with changing analog front end to pass lightning

susceptibility requirements. Performed required board layout changes to pass EMI requirements.

Resume Addendum

Previous Projects (Continued)

Lockheed Martin Aeronautical Systems Company:

Auxiliary Communications Unit (ACCU)

Hardware design of the ACCU, which is an emergency communications box for the C-130J aircraft. This box takes microphone

inputs from Pilot, Co-pilot, Loadmaster and a spare microphone, and directs them to the two radio inputs along with 4 headsets.

Design involved audio circuitry design, along with providing inputs to the mechanical engineers for packaging.

Auxiliary Power Unit Test Set (APU)

Hardware/Software design of the APU test set, which monitors the outputs of the APU system, and simulates inputs. Signals

monitored and simulated included thermocouple, tachometer, programmable resistive bridges and relay closures. Design

involved hardware design, along with programming in C. This was performed both for the base unit for the test, along with the

control unit. The embedded controllers were 80x86 and Pentium based processors.

Common Organizational Test Set (COLT)

Hardware/software design of a VXI based test system for flight line testing of armament systems.

Electronic Flight Instrument Test Set (EFI)

Hardware/Software design of the EFI test set, which simulates the various inputs to the aircraft ADI, and HSI indicators. Analog

design included simulating a wide range of voltage/current sources, synchro, resolver, programmable resistances, and a variety of

arbitrary waveforms

C-130J Software Engineering

Software Requirements analysis and architecture design. Programming implemented in ADA.

Instrumentation Test Set (ITS)

Hardware/Software design of the Instrumentation test set, which simulated engine and other signal inputs to the aircraft

instruments, along with monitoring sensor inputs. This test set was programmable to work on a variety of aircraft and systems.

Design included hardware development of simulation and monitoring circuitry, along with interface circuitry to interface an

80x86 PC-104 card to a 68332 computer card. Software development included software to interface the two computers, along

with menu base software to control the tester. 68332 microcontroller development was performed in assembly, and PC-104 CPU

(80x86) software development performed in C. Signals monitored and simulated included thermocouple, synchro, programmable

resistance, tachometer signals, phase shifted triangular pulse pairs, and a variety of arbitrary waveforms.

Jet Engine Instrument Test Set (JEITS)

Hardware/Software design of the Jet Instrument test set, which simulated engine and other signal inputs to the aircraft

instruments, along with monitoring sensor inputs. This test set was programmable to work on a variety of aircraft, which

included C-5, C-141, KC-135, H-60 Helicopter, and E-3 aircraft. Design included hardware development of simulation and

monitoring circuitry.

C-130H Oil Pressure/Temperature Monitor Unit

Hardware/Software design using the Motorola 68HC05 microcontroller. Unit monitored oil pressure sensors (synchros) and oil

temperature sensors (RTD) and drove warning flags when out of limits.

Initial Support/Setup for FAA Repair Facility

Supplied engineering support for the technicians in early stages of FAA repair facility

Crash Data Recorder Down loader (CDPIR)

Hardware/Software design. This unit was used to download data and audio from the C-5 Crash Data Recorder and produced

reports.

Selection/Set up Electronic Design Tools

Installed operating system and configured network consisting of Sun Ultra II workstations along with a Sun Enterprise 3500

server. Installed and configured Cadence and other software on these units.

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