My roots are in electronics, both analog and digital. Through experience
ranging from childhood tinkering to undergraduate study in Physics (with a focus on
electronics), to work at NYU Medical Center, to graduate study in Computer
Science, to work in Campus Networking at the Univ. of Utah, I became proficient
in design, implementation, troubleshooting and repair.
In 1976, I designed and constructed a special purpose digital monitoring
system from the ground up (above center), comprising e.g., 144 TTL ICs,
10 CMOS ICs, and dozens of relays. This work spanned initial logic and circuit
design, circuit board layouts and etching, physical case layouts and
construction, component mounting and soldering with extensive color coded
wiring, and testing. Documentation contained complete circuit diagrams and
comprehensive theory of operation. More Info &
Slideshow
1975-1976 Indiana University of PA, Psychology Dept
Worked extensively with the electronics and hardware of the first CT scanners
and other imaging systems at NYU Medical Center, Radiology as their first
digital imaging specialist. Responsibilities included maintenance and quality
control of the CT scanners for which I attended the vendor's field service
engineer classes, after which I could often fix scanner problems (electronic and
mechanical) or expedite field service to minimize costly downtime. I also
investigated video monitor image quality issues as pertained to the first
digital film writers, e.g., black level clamping, gamma correction, point spread
function. 1977-1980
Designed and constructed a high resolution image digitizer for diagnostic
X-ray films from scratch. This comprised a camera with high resolution photo
array, high intensity light source with mirror and Fresnel lens, high resolution
memory buffer, and computer interface software. More
Info
1981-1983 Univ. of Utah Medical Center, Diagnostic
Imaging Lab
Co-designed and co-constructed a high resolution digital film writer from
scratch, comprising a high resolution CRT display, optics, analog/digital
interface hardware, and computer interface software.
1981-1983 Univ. of Utah Medical Center, Diagnostic
Imaging Lab
Immersed in data networking hardware, software and design for 7 years at Univ. of
Utah, Campus Networking. Played a key role in the first university-wide
data network in the late 1980s, initially built on a legacy broadband video system and
later replaced with FDDI via air blown optical fiber. My work included design,
installation, testing, troubleshooting, and repair, from low level issues such
as investigating broadband problems with a spectrum analyzer, or Ethernet
problems with an oscilloscope, up through extensive use of protocol analyzers
and SNMP monitoring and analysis tools. Physical layers included FDDI and other
fiber optics, DS1/DS3, and all forms of Ethernet from the original "yellow hose"
through 10BaseT, linked through repeaters, bridges, switches, and routers
(primarily cisco). Protocols included TCP/IP, AppleTalk, Novell IPX, and DECNet.
1988-1995
