Readout 6.1 Chapter 3Chapter 3Indicating and Recording Indicating and Recording DevicesDevicesSection 3.3Section 3.3 Readout DevicesReadout Devices►►DMM (digital DMM (digital multimetermultimeter))HandheldHandheldTabletopTabletop►►OscilloscopesOscilloscopesDigitalDigitalNational Instruments National Instruments Signal ExpressSignal Express DMM (digital DMM (digital multimetermultimeter))►►Commonly provide measurements of Commonly provide measurements of resistance, resistance, AC or DC voltage, and AC or DC voltage, and AC or DC current (amps)AC or DC current (amps)►►Manual and Manual and AutorangingAutorangingscalesscalesmanual set by user manual set by user ►►you should use smallest scale possible!you should use smallest scale possible!autorangeautorangeset by DMMset by DMM Agilent 34405A Agilent 34405A MultimeterMultimeter Agilent 34405A Agilent 34405A MultimeterMultimeterNeed to record both the ________ and _______ when measuring! LG #DMLG #DM--441B 441B Digital MultiDigital Multi--MeterMeterFluke 87 Fluke 87 Handheld DMMHandheld DMMReadout 6.2 Tektronix TDS 2014 DSO Tektronix TDS 2014 DSO (Digital Storage Oscilloscope)(Digital Storage Oscilloscope) OscilloscopeOscilloscopeTwo primary adjustments:Two primary adjustments:►►horizontal horizontal ““sweepsweep””rate (time axis)rate (time axis)usually in units of usually in units of ►►vertical amplitudevertical amplitudeusually in units of usually in units of divordivdivordiv Oscilloscope Oscilloscope --DivisionsDivisionshorizontal (time) divisionverticalamplitudedivision Determine Amplitude and Determine Amplitude and Frequency of Sine WaveFrequency of Sine WaveHorizontal Sensitivity Vertical Sensitivity2 msec/div 0.2 volt/div Function Generator Function Generator ►►Not a readout, but a common input deviceNot a readout, but a common input device►►Generate sine, triangle and square wavesGenerate sine, triangle and square wavesadjustable frequency (____ = ________/sec)adjustable frequency (____ = ________/sec)adjustable amplitudeadjustable amplitude►►Connect to Output (analog)Connect to Output (analog)often labeled 50often labeled 50ΩΩ►►Usually has a TTL/CMOS output alsoUsually has a TTL/CMOS output alsoTTL/CMOS is a digital output, 0V or +5V onlyTTL/CMOS is a digital output, 0V or +5V only BK Precision Function GeneratorBK Precision Function GeneratorSine Wave Square Wave Triangle WaveOutput Level (Amplitude)Frequency ________ (0-2 Hz, 0-20Hz, … 0-2MHzOutput