Fluke 45 user manual Ohms, Diode Test/Continuity

Page 108

Appendices

Specifications A

Ohms

Range

300Ω

3kΩ

30 kΩ

300kΩ

3MΩ

30 MΩ

300 MΩ *

100Ω

1000 Ω

10 kΩ

100 kΩ

1000 kΩ

10 MΩ

100 MΩ *

Resolution

 

Slow

 

Medium

 

 

 

 

 

 

 

 

 

—10 mΩ

—100 MΩ

—1 Ω

—10 Ω

—100 Ω

—1 kΩ

—100 kΩ

1 mΩ

—

10 mΩ

—

100 mΩ

—

1 Ω

—

10 Ω

—

100 Ω

—

100 kΩ

—

Fast

100MΩ

1Ω

10Ω

100Ω

1kΩ

10kΩ

1MΩ

—

—

—

—

—

—

—

Accuracy

0.05 % + 2 + 0.02Ω

0.05% + 2

0.05% + 2

0.05% + 2

0.06% + 2

0.25% + 3

2 %

0.05 % + 8 + 0.02 Ω

0.05 % + 8 + 0.02Ω

0.05%+8

0.05% + 8

0.06% + 8

0.25% + 6

2 % + 2

Typical Full

Scale

Voltage

0.25

0.24

0.29

0.29

0.3

2.25

2.9

0.09

0.10

0.11

0.11

0.12

1.5

2.75

Max Current

Through the

Unknown

1mA 120µ A

14µ A 1.5 µ A

150µ A

320µ A

320µ A

1mA

120µ A

14µ A 1.5 µ A

150µ A

150µ A

320µ A

*Because of the method used to measure resistance, the 100 MΩ (slow) and 300 MΩ

(medium and fast)

ranges cannot measure below 3.2 MΩ and 20 MΩ

 

, respectively. "UL" (underload) is shown on the display for

resistances below these nominal points, and the computer interface outputs "+1 E-9".

 

 

 

 

 

Open Circuit Voltage

 

 

 

3.2 V maximum on the 100 Ω , 300 Ω

, 30 MΩ , 100 MΩ , and 300 MΩ

ranges, 1.5 V

maximum on all other ranges.

 

 

 

Input Protection

500 V dc or rms ac on all ranges

Diode Test/Continuity

 

Maximum Reading

 

 

Slow

999.99 mV

Medium

2.5 V

Fast

2.5 V

 

 

Resolution

10µ V

100µ V

1mV

Test Current

Approximately 0.7 mA when measuring a forward biased junction.

Audible Tone

Continuous tone for continuity. Brief tone for normal forward biased diode or semiconductor junction.

A-7

Page 107 Page 109
Image 108
Page 107 Page 109
Contents Dual Display Multimeter Limited Warranty & Limitation of Liability Declaration of the Manufacturer or Importer Table of Contents Applications Appendices List of Tables Page List of Figures Introduction Introducing the Fluke 45 Dual Display MultimeterOptions and Accessories Where to go from HereModel Accessories Description Maintenance Appendices Page Multimeter Safety Introduction Getting StartedFront Panel Using the Pushbuttons Turning the Meter onSummary of Basic Pushbutton Operations Selecting a Measurement Range Automatic Input Terminal SelectionTaking Some Basic Measurements Diode/Continuity Testing Measuring Voltage, Resistance, or FrequencyMeasuring Current Freq Continuity Testing Operating the Meter Under Battery Power Optional Rack MountingPage Operating the Meter From the Front Panel Front Panel OperationsDisplay Primary DisplaySecondary Display Remote SMF Input Terminals Input TerminalsSelecting a Measurement Function RangingAutoranging Input LimitsFunction Buttons Slow Reading Rate Range Full Scale Ohms Ranges and Full Scale Values Fast Reading RateMedium Reading Rate Range Full Scale Frequency Ranges and Full Scale Values Slow and MediumMeasuring Frequency Manual RangingFrequency Ranging Frequency Measurement Rates Measuring Frequency of Current 100 mA and 10A InputsFrequency Sensitivity Selection Frequency Measurement RatesSelecting a Function Modifier Maximum Sinewave Inputs for Frequency Measurements RangeMaximim Input Voltage REL Relative Readings Modifier Function Modifier Selection ButtonsDB Decibels and Audio Power Modifier Reference Impedances in OhmsUsing Function Modifiers in Combination Hold Touch Hold ModifierMN MX Minimum Maximum Modifier Using the SButton Selecting a Measurement Rate RatePushbuttons 10. SButton OperationsUsing The Compare Comp Function List and Number EditorsUsing the List Editor Using the Number Editor Power-Up Configuration Factory Settings of Power-Up ConfigurationChanging the Power-Up Configuration 13. Power-Up Configuration Set at Factory Parameter ConfigurationsCalibration Using the Dual Display ApplicationsUsing Measurement Functions in Combination Dual Display Showing Volts AC and FrequencySample Dual Display Applications Primary Display ApplicationsDC Voltage and DC Current Measurement on Input Signal Response TimesHow the Meter Makes Dual Display Measurements Slow Rate Auto Single Range1 Range2 Medium Rate Fast Rate Slow Med FastUpdate Rate in the Dual Display Mode External TriggerThermal Voltages AllWhen Measuring Resistance Two-Wire ConfigurationTrue RMS Measurements Correcting for Test Lead ResistanceEffects of Internal Noise in AC Measurements Calculated AC + DC RMS MeasurementsWaveform Comparison True RMS vs. Average-Responding Meters True RMS Measurements Page Local and Remote Operations Computer InterfacesSetting Communication Parameters RS-232 Factory Settings of RS-232 Communication ParametersFactory Setting Preparing the Meter for Operations via the RS-232 InterfaceRS-232 Print-Only Mode Device Clear Using C Cntrl C Cabling the Meter to a Host or Printer RS-232Character Echoing and Deletion RS-232 PromptsInstalling the IEEE-488 Interface Preparing the Meter to be Operated via IEEE-488 InterfaceIEEE-488 Operating Limitations Enabling the IEEE-488 InterfaceGetting Started With An Installation Test Installation Test for RS-232 OperationsInstallation Test for IEEE-488 Operations Cabling the Meter to a HostHow the Meter Processes Input If Test FailsInput Strings Input TerminatorsSending Command Strings to the Meter Typical IEEE-488 Input StringsSending Numeric Values to the Meter Page Typical IEEE-488 Input Strings How the Meter Processes Output Triggering OutputExternal Triggering from the Front Panel Setting the Trigger Type Configuration External Triggering via the Computer InterfaceService Requests IEEE-488 Only and Status Registers Settling DelayTrigger Type Rear TriggerRead Command Write CommandEnable Register Status Register SummaryESB MAV 3 2 1 Event Status and Event Status Enable Registers Event Status and Event Status Enable RegistersStatus Byte Register Reading the Status Byte RegisterDescription of Bits in ESR and ESE Bit No Name True Set to 1 ConditionsService Request Enable Register Description of Bits in the Status Byte Register Bit No NameTrue Set to 1 Condition Computer Interface Command Set IEEE-488 Capabilities and Common CommandsIEEE-488 Common Commands IEEE-488 Interface Function Subsets10. IEEE-488 Common Commands Number StateFunction Commands and Queries Function Modifier Commands and Queries11. Function Commands and Queries Primary Secondary Display Command 12. Function Modifier Commands and Queries Description12A. Reference Impedance Values Ref Impedance Value Ref ImpedanceMIN Range and Measurement Rate Commands and Queries Ohms RangeCurrent Range Frequency Range13. Range and Measurement Rate Commands and Queries Measurement Queries14. Measurement Queries Description Compare Commands and Queries Trigger Configuration Commands15. Compare Commands and Queries Description 16. Trigger Configuration Commands DescriptionMiscellaneous Commands and Queries 17. Miscellaneous Commands and Queries Description16A. Measurement Units Output with Format Measurement FunctionRS-232 Remote/Local Configurations 18. Remote/Local Configuration Commands DescriptionSample Program Using the RS-232 Computer Interface Sample Program for RS-232 Computer InterfaceSample Programs Using the IEEE-488 Computer Interface Sample Programs for IEEE-488 Computer InterfaceAam25s.tif Aam26s.tif Aam27s.tif Operating the Meter Using the Computer Interface Introduction Cleaning Line FuseTesting Current Input Fuses Current Input FusesReplacing the 100 mA Input Fuse Replacing the 10 a Input FuseFront Panel Input Terminal Self-Test Diagnostics and Error Codes Error No Self-Test Error Codes MeaningPerformance Tests Service Input LevelFrequency Min MaxUsing decades 300 Ω Short 30 kΩ Replacement Parts Replacement PartsPerformance Tests for mA Current Functions Min Max 29.982 30.018TM1 TM2 TM3 TM4 TM5 Appendices Page Display Counts and Reading Rates RS-232 and IEEE-488 Reading Transfer RatesResponse Times Normal Mode Rejection Ratio Common Mode Rejection RatioDC Voltage Input ImpedanceDecibel Resolution True RMS AC Voltage, AC-CoupledMaximum Input AccuracyMaximum Crest Factor Common Mode Rejection Ratio Decibel Reference ResistanceAC + DC Voltage Accuracy DC Current AC CurrentRange Slow AccuracyMaximum Crest Factor Maximum Input RangeFrequency Slow Accuracy Medium FastOhms Diode Test/ContinuityFrequency Sensitivity of AC VoltageSensitivity Level of AC Current Environmental General OptionsASCII/IEEE-488 Bus Codes Page ASCII/IEEE-488 Bus Codes B IEEE-488.2 Device Documentation Requirements Implementation of Ieee StandardNumeric Response Data Measurement *RDT and *RAT? commands are not implemented
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45 specifications

The Fluke 45 is a versatile and high-precision Digital Multimeter that is designed for a wide range of applications in electrical testing, troubleshooting, and maintenance. Known for its reliability and advanced features, the Fluke 45 is an essential tool for engineers, technicians, and professionals who require accurate measurement capabilities.

One of the standout features of the Fluke 45 is its ability to measure both AC and DC voltage and current. With a maximum input voltage of 1000 volts and current ranges up to 10 amps, users can conduct a variety of electrical tests with confidence. The device is equipped with an intuitive dual display, allowing for simultaneous viewing of multiple measurements. This feature enhances usability during complex diagnostics.

The Fluke 45 also boasts an impressive resolution of 0.1 mV and a basic accuracy of 0.25%, which translates to highly reliable readings. The auto-ranging capability simplifies the measurement process, automatically selecting the appropriate range based on the input signal, thus saving time and reducing user error.

In addition to voltage and current measurements, the Fluke 45 features resistance measurement capabilities, with a range of up to 40 MΩ. This makes it an effective tool for testing circuits, identifying faults, and ensuring the integrity of electrical systems. The continuity test function, complete with a built-in beeper, assists in quickly diagnosing wiring issues.

Another remarkable characteristic of the Fluke 45 is its frequency measurement capabilities, which can measure frequencies up to 1 MHz. This is particularly useful in applications involving signal analysis and troubleshooting oscillators.

Moreover, the Fluke 45 is designed with user convenience in mind. It is lightweight and portable, making it easy to carry around, whether on a job site or in a workshop. The rugged construction, reinforced with high-quality materials, ensures it can withstand harsh conditions often encountered in the field.

To enhance functionality, the Fluke 45 features a data hold function that freezes the displayed measurement for easier reporting. Additionally, it can store data for later retrieval, making it convenient for users who need to compile test results over time.

In summary, the Fluke 45 Digital Multimeter is an advanced instrument that combines precision, versatility, and user-friendly design. Its wide measurement capabilities, high accuracy, and durable build make it an invaluable tool for professionals in diverse electrical and electronic applications. Whether for routine maintenance or complex troubleshooting, the Fluke 45 stands out as a reliable partner in achieving accurate and efficient results.
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