Fluke 787 user manual Producing a Steady mA Output, MA Output Adjust Pushbuttons, Adjustment

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787

Users Manual

Producing a Steady mA Output

Table 8. mA Output Adjust 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 adjust the current as shown in Table 8.

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

Pushbutton

Z

K

COARSE

X

I

FINE

Adjustment

Adjusts up 0.1 mA

Adjusts up 0.001 mA

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.

Note

The STEP pushbuttons described on the next page are available when the meter is producing a steady mA output. The STEP pushbuttons go to the next multiple of 25%.

FINE

F

W

COARSE

C

Y

Adjusts down 0.001 mA

Adjusts down 0.1 mA

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Contents 787 Limited Warranty & Limitation of Liability Table of Contents 787 IndexIntroduction Read Safety Information before you use the meterContacting Fluke Safety Information 787ProcessMeter International Symbols Meaning Symbol MeaningHow to Get Started Fluke 787 ProcessMeterGetting Acquainted with the Meter Input/Output JacksSource Current Function Input/Output Jacks Measurement FunctionsSimulate Transmitter Function Rotary Switch Positions for Measurements Functions Pushbutton ActionsRotary Switch Positions for mA Output Default Function Pushbuttons Pushbuttons FunctionsPushbutton CoarseElements of the Display Element Display MeaningDisplay Element MA, DC, mV, AC Or kΩ, kHz Auto 400100030 Measuring a Composite Signal Measuring Electrical ParametersInput Impedance RangesTesting Diodes Displaying Minimum, Maximum, and AverageUsing TouchHold Compensating for Test Lead ResistanceUsing the Current Output Functions Source ModeSourcing Current Simulate Mode Changing the Current SpanSimulating a Transmitter Adjustment MA Output Adjust PushbuttonsProducing a Steady mA Output Manually Stepping the mA Output MA Stepping PushbuttonsMA Step Values Value for each span setting To 20 mA Auto Ramping the mA OutputPower-Up Options Power-Up OptionsPushbutton Default Action TakenBattery Life Using the Holster and Flex-StandMaintenance General MaintenanceUsing the Holster and Flex-Stand Replacing the Battery Replacing the BatteryReplacing a Fuse If the Meter does not Work Replacing a FuseReplacement Parts and Accessories Replacement Parts DescriptionFluke PN or Model no QuantityMP8 Specifications ResolutionDC Volts Measurement Range V dcDC Millivolts Measurement Range mV dc Resolution 400.0 Accuracy % of Reading + CountsAC Volts Measurement AC Current Measurement DC Current MeasurementOhms Measurement Range ResolutionMeasurement Current Frequency Counter Sensitivity Frequency Counter AccuracyInput Range Minimum Sensitivity rms Sinewave 5 Hz to 5 kHz General Specifications Source modeSimulate Mode Diode Test and Continuity TestCertifications CSA, UL, TÜV Index Knob positions, 9 Pushbuttons Loop supply, external Index 787