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== Generelt ==
 
== Generelt ==
 
* [http://folk.ntnu.no/spreeman/itsnotlearning/TFY4190-2007V/Curriculum.pdf Pensumliste våren 2007]
 
* [http://folk.ntnu.no/spreeman/itsnotlearning/TFY4190-2007V/Curriculum.pdf Pensumliste våren 2007]
 +
* [http://folk.ntnu.no/spreeman/itsnotlearning/TFY4190-2007V/repetisjonsoppgsvar.pdf Innsamlede svar på repetisjonsoppgaver våren 2007]
 +
* [http://www.maxim-ic.com/glossary/ Glossary of Electrical Engineering Terms]
 +
* [http://www.elfa.se/no/index1.html ELFA]
 +
=== Lab-oppgaver ===
 +
* [http://folk.ntnu.no/spreeman/itsnotlearning/TFY4190-2007V/lab_3.pdf Lab-oppgave 3] (PID-controller)
  
 
== Tall i datamaskiner ==
 
== Tall i datamaskiner ==
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* [http://en.wikipedia.org/wiki/Gray_code Wikipedia: Gray code]
 
* [http://en.wikipedia.org/wiki/Gray_code Wikipedia: Gray code]
 
* [http://www.asciitable.com/ ASCII-tabell]
 
* [http://www.asciitable.com/ ASCII-tabell]
 +
* [http://www.easycalculation.com/hexa-decimal-binary.php Kalkulator mellom binære, hexadesimale og desimale tall]
 
=== Flyttall ===
 
=== Flyttall ===
 
* [http://en.wikipedia.org/wiki/Floating_point Wikipedia: Floating point]
 
* [http://en.wikipedia.org/wiki/Floating_point Wikipedia: Floating point]
−
* [http://en.wikipedia.org/wiki/IEEE_floating-point_standard Wikipedia: IEEE floating point standard]
+
* [http://en.wikipedia.org/wiki/IEEE_floating-point_standard Wikipedia: IEEE floating point standard] (Se avsnitt [http://en.wikipedia.org/wiki/IEEE_floating-point_standard#A_more_complex_example "A more complex example"] for fremgangsmåte)
 +
 
 
=== Representasjon av negative tall ===
 
=== Representasjon av negative tall ===
 
* [http://en.wikipedia.org/wiki/Exponent_bias Wikipedia: Exponent bias]
 
* [http://en.wikipedia.org/wiki/Exponent_bias Wikipedia: Exponent bias]
 
* [http://en.wikipedia.org/wiki/Two%27s_complement Wikipedia: Two's complement]
 
* [http://en.wikipedia.org/wiki/Two%27s_complement Wikipedia: Two's complement]
 +
* [http://en.wikipedia.org/wiki/Signed_number_representations Wikipedia: Signed number representations] (Bl.a. one's complement)
  
 
== Støy ==
 
== Støy ==
Linje 25: Linje 33:
 
== Data-konvertering ==
 
== Data-konvertering ==
 
* [http://soundlab.cs.princeton.edu/learning/tutorials/sensors/node16.html Strøm til spenning ved bruk av inverterende op-amp]
 
* [http://soundlab.cs.princeton.edu/learning/tutorials/sensors/node16.html Strøm til spenning ved bruk av inverterende op-amp]
−
* [http://www.hardwaresecrets.com/article/317/1 En bra introduksjon til AD-convertering]
+
* [http://www.hardwaresecrets.com/article/317 En bra introduksjon til AD-convertering]
 
=== AD-convertere ===
 
=== AD-convertere ===
 
* [http://en.wikipedia.org/wiki/Analog-to-digital_converter Wikipedia: AD-converter]
 
* [http://en.wikipedia.org/wiki/Analog-to-digital_converter Wikipedia: AD-converter]
Linje 37: Linje 45:
 
* [http://en.wikipedia.org/wiki/Sample_and_hold Wikipedia: Sample and Hold]
 
* [http://en.wikipedia.org/wiki/Sample_and_hold Wikipedia: Sample and Hold]
 
* [http://en.wikipedia.org/wiki/Anti-aliasing Wikipedia: Anti-aliasing]
 
* [http://en.wikipedia.org/wiki/Anti-aliasing Wikipedia: Anti-aliasing]
 +
 +
== Signaloverføring ==
 +
* [http://en.wikipedia.org/wiki/Characteristic_impedance Wikipedia: Characteristic impedance]
 +
* [http://kom.aau.dk/~heb/kurser/felt-07/eloh01v4.ppt Eksterne forelesningsnotater om transmisjonslinjer]
  
 
== Diverse ==
 
== Diverse ==
 
* [http://en.wikipedia.org/wiki/Thermocouple Wikipedia: Thermocouple]
 
* [http://en.wikipedia.org/wiki/Thermocouple Wikipedia: Thermocouple]
 +
* [http://en.wikipedia.org/wiki/Operational_amplifier_applications Wikipedia: 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
 +
 +
[[Kategori:Fysikkfag]]

Nåværende revisjon fra 3. nov. 2011 kl. 13:58

I faget 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 er inndelt, enn hvor ulogisk den kan være.

Generelt

Lab-oppgaver

Tall i datamaskiner

Flyttall

Representasjon av negative tall

Støy

Støytyper

Data-konvertering

AD-convertere

Sampling

Signaloverføring

Diverse

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
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