45

Users Manual

Press to Toggle In and Out of Manual Ranging.

"AUTO" Annunciator Turns off when Manual Range Selected.

Press to Enter Manual Range and Up Range

Press to Enter Manual Range and Down Range

AUTO

45 DUAL DISPLAY MULTIMETER

V 10A

600V CAT I

!

1000V CAT I

 

COM

100

mA

 

FUSE F1

V

500 mA

 

F 250V

 

FUSEDV

 

 

 

 

 

CAL

 

 

 

 

 

ENABLE

A

 

 

REL

dB

2ND

 

 

 

REF#

REF

LOCAL

A

FREQ AUTO

 

HOLD

MN MX

RATE

 

 

 

 

COMP

HI

LO THRESH

ADDR

BAUD

POWER

aam14f.eps

Figure 3-6. Range Selection Buttons

Manual Ranging

Press Eto toggle in and out of manual ranging. The range you are in when you enter the manual range mode becomes the selected range.

In manual range, the meter remains in the selected range regardless of input. Press Eto toggle back to autoranging. Manual ranging can only be performed on readings shown on the primary display; the secondary display always autoranges.

Press Uto up range. If the Uis pressed when the meter is still in autorange, manual ranging is selected, the AUTO annunciator turns off, and the next higher range is selected (if there is one).

Press Tto down range. If the Tis pressed when the meter is still in autorange, manual ranging is selected, the AUTO annunciator turns off, and the next lower range is selected (if there is one).

Measuring Frequency

(F)

Frequency Ranging

Frequency measurements from 5 Hz to > 1 MHz are automatically ranged so that a frequency measurement is always displayed with maximum resolution.

If the frequency function (FREQ) is selected in the primary display, press the Uor T to manually select a range. (Manual ranging is not allowed in the secondary display.) If you select a frequency range manually, frequency measurements that exceed the full scale value of that range cause "OL" (overload) to be displayed. Refer to Table 3-5 for frequency ranges and full scale values.

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Fluke 45 user manual Measuring Frequency, Manual Ranging, Frequency Ranging

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.