I faget [[TFY4190 Instrumentering | Instrumentering]] består deler av evalueringen av en fire-timers prøve, der alle bøker samt Internett er tillatte hjelpemidler. I den forbindelse kan det være greit å ha en oversikt over nettsider med relevant informasjon. Linkene er forsøkt sortert slik [pensumlisten](http://folk.ntnu.no/spreeman/itsnotlearning/TFY4190-2007V/Curriculum.pdf) er inndelt, enn hvor ulogisk den kan være. ## Generelt * [Pensumliste våren 2007](http://folk.ntnu.no/spreeman/itsnotlearning/TFY4190-2007V/Curriculum.pdf) * [Innsamlede svar på repetisjonsoppgaver våren 2007](http://folk.ntnu.no/spreeman/itsnotlearning/TFY4190-2007V/repetisjonsoppgsvar.pdf) * [Glossary of Electrical Engineering Terms](http://www.maxim-ic.com/glossary/) * [ELFA](http://www.elfa.se/no/index1.html) ### Lab-oppgaver * [Lab-oppgave 3](http://folk.ntnu.no/spreeman/itsnotlearning/TFY4190-2007V/lab_3.pdf) (PID-controller) ## Tall i datamaskiner * [Wikipedia: BCD](http://en.wikipedia.org/wiki/Binary-coded_decimal) (Se "Packed BCD" for 8421-BCD) * [Wikipedia: Gray code](http://en.wikipedia.org/wiki/Gray_code) * [ASCII-tabell](http://www.asciitable.com/) * [Kalkulator mellom binære, hexadesimale og desimale tall](http://www.easycalculation.com/hexa-decimal-binary.php) ### Flyttall * [Wikipedia: Floating point](http://en.wikipedia.org/wiki/Floating_point) * [Wikipedia: IEEE floating point standard](http://en.wikipedia.org/wiki/IEEE_floating-point_standard) (Se avsnitt ["A more complex example"](http://en.wikipedia.org/wiki/IEEE_floating-point_standard#A_more_complex_example) for fremgangsmåte) ### Representasjon av negative tall * [Wikipedia: Exponent bias](http://en.wikipedia.org/wiki/Exponent_bias) * [Wikipedia: Two's complement](http://en.wikipedia.org/wiki/Two%27s_complement) * [Wikipedia: Signed number representations](http://en.wikipedia.org/wiki/Signed_number_representations) (Bl.a. one's complement) ## Støy * [Wikipedia: Ground](http://en.wikipedia.org/wiki/Ground_%28electricity%29) * [Wikipedia: Electronic noise](http://en.wikipedia.org/wiki/Electronic_noise) (Bl.a. liste over støytyper) ### Støytyper * [Wikipedia: Shot noise](http://en.wikipedia.org/wiki/Shot_noise) * [Wikipedia: Johnson-Nyquist noise](http://en.wikipedia.org/wiki/Johnson%E2%80%93Nyquist_noise) (Termisk støy) * [Wikipedia: White noise](http://en.wikipedia.org/wiki/White_noise) ## Data-konvertering * [Strøm til spenning ved bruk av inverterende op-amp](http://soundlab.cs.princeton.edu/learning/tutorials/sensors/node16.html) * [En bra introduksjon til AD-convertering](http://www.hardwaresecrets.com/article/317) ### AD-convertere * [Wikipedia: AD-converter](http://en.wikipedia.org/wiki/Analog-to-digital_converter) * [Flash-type AD-converter](http://www.allaboutcircuits.com/vol_4/chpt_13/4.html) (Se spesielt siste kretstegning som kraftig forenkler [[Northrop: Introduction to Instrumentation and Measurements | Northrop]] s. 618) * [Wikipedia: Successive Approximation ADC](http://en.wikipedia.org/wiki/Successive_Approximation_ADC) * [Delta-Sigma-ADC](http://www.allaboutcircuits.com/vol_4/chpt_13/9.html) ## Sampling * [FFT og spektralanalyse i Matlab](http://www.ele.uri.edu/~hansenj/projects/ele436/fft.pdf) (siden Matlab er tilgjengelig) * [Sample and Hold](http://soundlab.cs.princeton.edu/learning/tutorials/sensors/node22.html) * [Wikipedia: Sample and Hold](http://en.wikipedia.org/wiki/Sample_and_hold) * [Wikipedia: Anti-aliasing](http://en.wikipedia.org/wiki/Anti-aliasing) ## Signaloverføring * [Wikipedia: Characteristic impedance](http://en.wikipedia.org/wiki/Characteristic_impedance) * [Eksterne forelesningsnotater om transmisjonslinjer](http://kom.aau.dk/~heb/kurser/felt-07/eloh01v4.ppt) ## Diverse * [Wikipedia: Thermocouple](http://en.wikipedia.org/wiki/Thermocouple) * [Wikipedia: Operational amplifier applications](http://en.wikipedia.org/wiki/Operational_amplifier_applications) (forskjellige op-amper) ## Flervalgsoppgaver Før evalueringen våren 2007 ble der lagt ut eksempeloppgaver. Under følger et utvalg av disse med svar. * An anti-alias filter is Placed berore the input to remove frequencies above the Nyquist limit * The resolution of a DAC depends on The number of bits * A LabVIEW program gives the value of an integer as 65534. You know that this actually is a small negative number, but represented as an unsigned 16-bit integer. The small number is -2 * In addition to letters and numbers, the 7-bit ASCII code has codes for Codes for communication control * If the transfer function of a regulator has poles in the right half plane The output will increase exponentially with time * Suppose we have a small signal in the range 0 - 2 mV. It can be amplified by a factor of 1000. We have the choice of two AD converters, one 12 bit with range ± 10V and one 10 bit with range 0 - 5V. Which one has the best resolution? They are equal * Thermocouples need zero-point correction because Their output gives the temperature difference between two junctions * Shot noise has a frequency dependance that is called White noise * One of the following units is not used for magnetic fields: Henry * The transmission velocity of a signal on a coaxial line depends mainly on The dielectric * Which of these number representations have more than one representation for zero? Sign + magnitude AND 1-complenent. (there is an error in the question, so it is removed from the test) * A LabVIEW program is used to read the output of a 12-bit AD converter with range ± 10V. The binary output is available in 2-complement form. By some reason, the program gives the result in hex as C8A. Then the voltage is -4,33 V * A 300 ohm transmission line is terminated with a standard 50 ohm pure resistive termination. A signal is transmitted on the line. There will be a phase reversal of the reflected signal