JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

Course Objectives

Student will be able to

• 1. Identify the selection of type of data acquisition system.
• 2. Understand the principles of A/D , D/A Converters, Error Analysis, Display Systems
• 3. Recognize these principles written in form of mathematical equations
• 4. Apply these equations to analyze problems by making good assumptions and learn systematic engineering method to design a good Data acquisition system

Course Outcomes

On successful completion of this course, it is expected that students should be

able to

• 1. Apply fundamental knowledge of mathematics to modeling and analysis of A/D & D/A’s, error analysison data acquisition systems.
• 2. Conduct case studies indifferent data acquisition systems and interpreting data from model studies toprototype cases, as well as documenting them in engineering reports.
• 3. Understand the errors/problems by an improper design analysis in data acquisition system.
• 4. Interface the analog and digital acquisition systems with PC, Analyze and display the output.

UNIT - I

Data Loggers and Data Acquisition Systems: Data acquisition systems-configurations components, analog multiplexes and sample and hold circuits-specifications and design considerations. DACs: specifications – characteristics, types of DACs (serial, parallel, direct and indirect). Hybrid and monolithic DACs. ADCs: specifications – characteristics, types of ADCs (serial, parallel, direct and indirect). Hybrid and monolithic ADCs, sigma – delta ADCs’, Hybrid DAS – Schematic diagram – configurations – specifications

UNIT - II

Error Budget of DACs and ADCs: Error sources, error reduction and noise reduction techniques in DAS. Error budget analysis of DAS.Case study of a DAC and an ADC. 31 Data Acquisition Hardware and Software: Specifications of Hardware-IO analog signal range, gain for analog input and resolution in ADC converter, resolute\ion in DAC and counter chips, sampling frequency and maximum update rates, triggering capacity. Digital lines and ports, data acquisition VIs.

UNIT - III

Distributed AND Stand-Alone Data Loggers: Introduction, methods of operation-programming and logging data using PCMCIA cards, standard alone operation-direct and remote connection to the host PC, stand alone logger/controller hardware interface – RS232C, RS485 standard, communication bottlenecks and system performance, using Ethernet to connect data loggers.

UNIT - IV

IEEE 488 Standard: Introduction, characteristics, physical connection configurations, device types, bus structure, GPIB hand shake, device communication, IEEE 488.2, standard commands for programmable instruments. Display Systems: LCD Flat panel displays, Digital storage CROs, Plasma displays, Projection systems.

R19 M.TECH EIE

UNIT - V

Analyzers – Spectrum Analyzers – guidelines, various triggering techniques, different types of spectrum analyzers, Recorders. Display devices and Display systems, Logic Analyzers – State and time referenced data capture. Scalar and Vector Network analyzers.

TEXT BOOKS:

• 1. Users Handbook of D/A & A/D Converters, E.R. HNATEK
• 2. Electronic Analog/Digital converters, H.Schmid
• 3. Data Converters, G.B. Clayton
• 4. Electronic Measurements, Oliver and Cage (ISE), Mc. Graw Hill

REFERENCES:

• 1. Electronic Instrumentation (ISTE Learning Material) (Ch:7) H.S. Kalsi, Learning Material Center, Indian
• 2. Society of Technical Education, New Mehrauli Road, New Delhi – 110 016
• 3. Electronic Instrumentation & Measurements, David A. BELL
• 4. Hand book of Biomedical Instrumentation, Khandpur R.S., Tata Mc. Graw Hill, 1996. R19 M.TECH EIE M.TECH.- I YEAR- II SEMESTER ELECTRONICS AND INSTRUMENTATION ENGINEERING