Difference between revisions of "General Lab Equipment Obstacle Course"
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<li> Exporting data </li> | <li> Exporting data </li> | ||
<li> Analog and digital scopes </li> | <li> Analog and digital scopes </li> | ||
| − | |||
</ul> | </ul> | ||
== RF Signals == | == RF Signals == | ||
| + | |||
| + | <ul> | ||
| + | <li> Measuring RF power </li> | ||
| + | <li> Termination and impedance matching </li> | ||
| + | <li> Attenuation and filtering </li> | ||
| + | <li> Splitters, mixers, and switches </li> | ||
| + | </ul> | ||
== Lock-in Amplifier == | == Lock-in Amplifier == | ||
| + | |||
| + | <ul> | ||
| + | <li> Basic idea of operation; reason for using </li> | ||
| + | <li> Use switch to turn on and off a highly attenuated signal and detect it with the lock-in </li> | ||
| + | </ul> | ||
== Frequency Counters == | == Frequency Counters == | ||
| + | |||
| + | Measure the frequency of an RF source; map frequency vs. voltage curve of a voltage controlled oscillator (VCO) | ||
== RF Spectrum Analyzer == | == RF Spectrum Analyzer == | ||
| + | '''Always be careful to ensure signal input to spectrum analyzer is not too large''' | ||
| + | |||
| + | <ul> | ||
| + | <li> What does a spectrum analyzer do? </li> | ||
| + | <li> Attach wire-loop antenna and find radio stations </li> | ||
| + | <li> Mix two RF signals and observe the expected spectrum </li> | ||
| + | <li> Measuring amplitude of signal above background </li> | ||
| + | <li> Save and export data | ||
| + | </ul> | ||
== Soldering == | == Soldering == | ||
| + | |||
| + | <ul> | ||
| + | <li> Soldering technique | ||
| + | <ul> | ||
| + | <li> Cleaning iron tip </li> | ||
| + | <li> Heat pieces to be soldered (hot iron, short time) </li> | ||
| + | <li> Avoid cold solder joints </li> | ||
| + | <li> Look for shiny and smooth result </li> | ||
| + | </ul> | ||
| + | <li> Tools of the trade: heatshrink tubing, desoldering pump, solder wick, wire strippers, soldering gun, heat gun, rosin flux </li> | ||
| + | <li> Solder end of DB9 cable (using only 4 or 5 conductors) to practice stripping wire, using heatshrink tubing, and creating usable product </li> | ||
| + | <li> Construct voltage divider on perfboard with BNC input/output connectors </li> | ||
| + | </ul> | ||
Revision as of 14:55, 10 November 2015
A general primer in important equipment in a scientific laboratory.
Contents
Multimeters
- Measuring voltage
- Measuring current (check that fuse isn't blown!)
- Measuring resistance and testing for continuity
- AC signals
- Clamp meter
Power Supplies
- Digital and Analog
- Floating and grounding
- Current/voltage limiting
Function Generators
(Should look at this in tandem with the following oscilloscope discussion)
- Frequency, amplitude, offset, phase
- Frequency sweep/ramp
- Sine, square (incl. TTL), triangle, sawtooth, arbitrary waveforms (possibly a demonstration of Fourier components)
Oscilloscopes
- Voltage/time scale
- Coupling
- Triggering
- Scope probes
- Termination
- Bandwidth, sampling
- Aliasing
- Analyzing data: cursors, averaging, math menu
- Exporting data
- Analog and digital scopes
RF Signals
- Measuring RF power
- Termination and impedance matching
- Attenuation and filtering
- Splitters, mixers, and switches
Lock-in Amplifier
- Basic idea of operation; reason for using
- Use switch to turn on and off a highly attenuated signal and detect it with the lock-in
Frequency Counters
Measure the frequency of an RF source; map frequency vs. voltage curve of a voltage controlled oscillator (VCO)
RF Spectrum Analyzer
Always be careful to ensure signal input to spectrum analyzer is not too large
- What does a spectrum analyzer do?
- Attach wire-loop antenna and find radio stations
- Mix two RF signals and observe the expected spectrum
- Measuring amplitude of signal above background
- Save and export data
Soldering
- Soldering technique
- Cleaning iron tip
- Heat pieces to be soldered (hot iron, short time)
- Avoid cold solder joints
- Look for shiny and smooth result
- Tools of the trade: heatshrink tubing, desoldering pump, solder wick, wire strippers, soldering gun, heat gun, rosin flux
- Solder end of DB9 cable (using only 4 or 5 conductors) to practice stripping wire, using heatshrink tubing, and creating usable product
- Construct voltage divider on perfboard with BNC input/output connectors
