Applications 4

Using the Dual Display

Table 4-1. Sample Dual Display Applications

Primary Display

Volts DC

Volts DC

Volts DC

Volts AC

Volts AC

Volts AC

dB (in Volts dc)

Current DC

MN MX

REL

REL

HOLD

Secondary Display

Volts AC

Current DC

Current AC

Current DC

Current AC

Frequency

Frequency

Current AC

Actual Value

Actual Value

Resistance

Actual Value

Applications

Monitor dc level and ac ripple of power supply Troubleshoot amplifier circuits

Check power supply load regulation

Monitor UUT current draw and circuit voltages

Monitor loop current and voltage drop across transmitter

Line and load regulation tests

dc/ac or ac/dc converters

Line and load regulation tests

dc/ac or ac/dc converters

Line and load regulation tests

Transformer (magnetic circuit) saturation

Measure ac amplitude and frequency for line voltage and ac signal analysis

Measure frequency response of an amplifier

Adjust ac motor control

Read noise in telecommunication applications

Adjust portable power generator to optimize power output

Set frequency compensation for a network

Use in "print-only" mode (see "RS-232 Print- Only Mode" in Chapter 5) for quick Bode plots (frequency vs. amplitude)

Test frequency response

Measure ripple and dc current draw of switching power supply

Measure current dissipation in protective fuse resistors used in power supplies

Measure ripple and noise on a line

Show the minimum or maximum value recorded and the present measurement

Show actual measurement and the difference between this value and the relative base.

Select and sort resistors. (See also "Using the Compare Function" in Chapter 3.)

Show actual measurement while holding a previous, stable measurement on the primary display

4-3

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Fluke 45 user manual Sample Dual Display Applications Primary Display

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.