Fluke 787 user manual Manually Stepping the mA Output, MA Stepping Pushbuttons

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ProcessMeter

Using the Current Output Functions

Manually Stepping the mA Output

Table 9. mA Stepping Pushbuttons

When the rotary switch is in the OUTPUT [mA position, and the OUTPUT jacks are connected to an appropriate load, the meter produces a steady mA dc output. The meter begins sourcing or simulating 0%. Use the pushbuttons to step the current up and down in 25% steps as shown in Table 9. See Table 10 for mA values at each 25% step.

Select either sourcing or simulating by choosing the SOURCE or SIMULATE output jacks.

If the meter cannot deliver the programmed current because the load resistance is too high or the loop supply voltage is too low, dashes (-----) appear on the numeric

display. When the impedance between the SOURCE jacks is low enough, the meter will resume sourcing.

Pushbutton

X

M

%STEP

%STEP T W

Adjustment

Adjusts up to the next higher 25% step

Adjusts down to the next lower 25% step

Note

The COARSE and FINE adjustment pushbuttons described on the previous page are available when you are manually stepping the mA output.

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Contents 787 Limited Warranty & Limitation of Liability Table of Contents Index 787Contacting Fluke Read Safety Information before you use the meterIntroduction 787 Safety InformationProcessMeter Symbol Meaning International Symbols MeaningFluke 787 ProcessMeter How to Get StartedInput/Output Jacks Getting Acquainted with the MeterSimulate Transmitter Function Input/Output Jacks Measurement FunctionsSource Current Function Rotary Switch Positions for Measurements Pushbutton Actions FunctionsRotary Switch Positions for mA Output Default Function Pushbuttons Functions PushbuttonsCoarse PushbuttonElements of the Display Display Meaning ElementDisplay Element MA, DC, mV, AC Or kΩ, kHz Auto 400100030 Measuring Electrical Parameters Measuring a Composite SignalInput Impedance RangesDisplaying Minimum, Maximum, and Average Testing DiodesCompensating for Test Lead Resistance Using TouchHoldSource Mode Using the Current Output FunctionsSourcing Current Changing the Current Span Simulate ModeSimulating a Transmitter Producing a Steady mA Output MA Output Adjust PushbuttonsAdjustment MA Stepping Pushbuttons Manually Stepping the mA OutputAuto Ramping the mA Output MA Step Values Value for each span setting To 20 mAPower-Up Options Power-Up OptionsPushbutton Default Action TakenUsing the Holster and Flex-Stand Battery LifeMaintenance General MaintenanceUsing the Holster and Flex-Stand Replacing the Battery Replacing the BatteryReplacing a Fuse Replacing a Fuse If the Meter does not WorkReplacement Parts and Accessories Description Replacement PartsFluke PN or Model no QuantityMP8 Resolution SpecificationsDC Volts Measurement Range V dcAC Volts Measurement Range mV dc Resolution 400.0 Accuracy % of Reading + CountsDC Millivolts Measurement DC Current Measurement AC Current MeasurementMeasurement Current Range ResolutionOhms Measurement Input Range Minimum Sensitivity rms Sinewave 5 Hz to 5 kHz Frequency Counter AccuracyFrequency Counter Sensitivity Source mode General SpecificationsSimulate Mode Diode Test and Continuity TestCertifications CSA, UL, TÜV Index Knob positions, 9 Pushbuttons Loop supply, external Index 787