Fluke 80 Series III user manual Analog Bar Graph, Determining Pulse Width, Model 87 Bar Graph

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80 Series III

Users Manual

Determining Pulse Width

For a periodic waveform (its pattern repeats at equal time intervals), you can determine the amount of time that the signal is high or low as follows:

1.Measure the signal’s frequency.

2.Press Fa second time to measure the signal’s duty cycle. Press Tto select a measurement of the signal’s positive or negative pulse. (Refer to Figure 8.)

3.Use the following formula to determine the pulse width:

Pulse Width

= % Duty Cycle ÷ 100

(in seconds)

 

Frequency

Analog Bar Graph

The analog bar graph functions like the needle on an analog meter, but without the overshoot. The bar graph is updated 40 times per second. Because the graph responds 10 times faster than the digital display, it is useful for making peak and null adjustments and observing rapidly changing inputs.

Model 87 Bar Graph

Model 87’s bar graph consists of 32 segments. The position of the pointer on the display represents the last three digits of the digital display. For example, for inputs of 500 Ω, 1500 Ω, and 2500 Ω, the pointer is near 0.5 on the scale. If the last three digits are 999, the pointer is at the far right of the scale. As the digits increment past 000, the pointer wraps back to the left side of the display. The polarity indicator at the left of the graph indicates the polarity of the input.

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Contents Series Lifetime Limited Warranty Table of Contents Series List of Tables Series List of Figures Series Introduction International Electrical Symbols SeriesSafety Information Your Meter’s Features TerminalInputs Description Switch Position Rotary Switch Positions FunctionButton Function Pushbuttons Button FunctionButton Display Features Model 87 Shown Number Feature Display Features Indication100 ms Display Features Number ΜA, mA ΜF, nF Me, ke Hz, kHz, MHzPower-Up Options Automatic Power-OffInput Alert Feature Making MeasurementsMeasuring AC and DC Voltage Switch Box Testing for Continuity For in-circuit tests, turn circuit power off Measuring Resistance Disconnect Isolating a ResistorUsing Conductance for High Resistance or Leakage Tests Measuring CapacitanceMeasuring Capacitance Series Testing Diodes Testing a DiodeWWarning Measuring AC or DC CurrentCurrent through one component Series Measuring Frequency All ranges Measuring Duty Cycle Components of Duty Cycle MeasurementsAnalog Bar Graph Determining Pulse WidthModel 87 Bar Graph 2 Digit Mode Model Models 83 and 85 Bar GraphMIN MAX Recording Mode MIN MAX Functions Touch Hold Mode Relative ModeZoom Mode Models 83 Maintenance Uses for the Zoom Mode Models 83General Maintenance Testing the Fuses 00.5 Ω Replace fuse OLTouch top half Input contactsReplacing the Battery Replacing the FusesService and Parts Battery and Fuse Replacement Replacement Parts Fluke Part Or Model NumberQuantity Replaceable Parts Accessories Fluke Part NumberSpecifications Models 85 and 87 AC Voltage Function Specifications KHz 20 kHz2Model 83 AC Voltage Function Specifications Model Current Function Specifications Resolution Model Model 853 Burden Voltage TypicalΜA B Capacitance and Diode Function Specifications Frequency Counter SpecificationsFrequency Counter Sensitivity and Trigger Levels AccuracyElectrical Characteristics of the Terminals MIN MAX Recording Specifications

80 Series III specifications

The Fluke 80 Series III digital multimeters are renowned for their robust engineering, precision, and versatility, making them a staple in the toolkit of electricians, engineers, and technicians. Launched by Fluke Corporation, a leading manufacturer of electronic test tools, the 80 Series III has set a benchmark in the multimeter industry for its reliability and performance.

One of the standout features of the Fluke 80 Series III is its wide measurement capabilities. The device can accurately measure AC and DC voltage, DC current, resistance, frequency, and capacitance. This comprehensive feature set allows users to tackle a variety of tasks, from simple household electrical checks to complex industrial applications. The meter's high input impedance prevents loading effects on circuits, ensuring accurate readings, especially in sensitive electronic applications.

Fluke's proprietary True-RMS technology is another defining characteristic of the 80 Series III. This technology ensures that the multimeter provides accurate readings for both non-linear loads and distorted waveforms, which are common in many modern electrical systems. This capability is particularly valuable in diagnosing issues in variable frequency drives, inverters, and other electronic systems that do not present traditional sinusoidal waveforms.

Durability is a key factor in the design of the Fluke 80 Series III. The multimeter is housed in a rugged, impact-resistant case that can withstand the rigors of fieldwork. It features a built-in protective holster with a probe holder, enhancing portability while safeguarding the device against drops and bumps. Furthermore, the 80 Series III boasts an IP67 rating for dust and water resistance, ensuring reliable performance in adverse conditions.

User-friendliness is also a significant aspect of the Fluke 80 Series III. The large, easy-to-read display, combined with intuitive controls, allows users to navigate its functions with ease. The multimeter features a backlight, enabling use in dimly lit environments, while the hold function ensures that readings can be captured and displayed even after disconnecting the probes.

In addition to these features, the Fluke 80 Series III offers various models to cater to specific needs, such as the 87V for highly accurate measurements in industrial environments and the 86V for temperature measurements with added thermocouple support. Each model maintains the high standards of quality and performance that Fluke is known for.

In summary, the Fluke 80 Series III digital multimeters combine advanced features, high accuracy, and rugged durability, making them indispensable tools for professionals who require reliable performance in challenging environments. Whether for routine maintenance or complex troubleshooting, the 80 Series III offers everything necessary to meet the demands of today’s electrical tasks.
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