45

Users Manual

2.Press Eand Tsimultaneously.

"tri" and a number corresponding to the selected trigger type ("1", "2", "3", "4", or "5" from Table 5-3) are displayed.

Note

If Eis pressed before (rather than simultaneously with) T, the meter will toggle from autorange to manual range or vice-versa, depending upon the range mode you are in.

3.Press Uor Tto step up or down the trigger type list.

Step to trigger type "2" (external trigger with settling delay disabled) or "3" (external trigger with settling delay enabled) to allow measurements to be triggered from the front panel. (Typical settling delays are provided in Table 4-3.)

4.When the desired trigger type is highlighted, press Eto select that trigger type.

If trigger type "2" or "3" has been selected, "REMOTE" and "EXT TRG" will be displayed, confirming that you are in the remote mode and external trigger has been enabled. (If you are not in the remote mode, you will not be able to trigger measurements from the front panel.)

5.Press Tto trigger a measurement. Each subsequent press of the Ttriggers a measurement.

6.To exit the remote mode, press S.

You will still be in external trigger. In order to return the meter to its internal (continuous) trigger state, perform steps 1-3 above to select trigger type "1".

If you exit the remote mode with trigger type "4" or "5" selected, the meter will still be in external trigger, but because it is no longer in the remote mode, you will only be able to trigger measurements with the rear trigger (types "4" and "5") or over the computer interface (using the *TRG command). To re-enter the remote mode, re- select trigger type "2" or "3" as described above.

Setting the Trigger Type Configuration

To select a trigger type over the computer interface, send the command:

TRIGGER <type>

where <type> is a number between 1 and 5 that identifies a trigger type. See Table 5-3. If <type> is not one of these numbers, an Execution Error is generated.

Select a trigger type that enables the settling delay (type 3 or 5) when the input signal is not stable before a measurement is triggered. Typical settling delays are provided in Table 4-3. The reading transfer rates are provided in Table 5-4.

External Triggering via the Computer Interface

To trigger a measurement over the RS-232 or IEEE-488 computer interface, send the meter a *TRG command over the computer interface. See Table 5-8.

The following external triggering methods can be used only when the IEEE-488 interface is enabled:

When the IEEE-488 interface is enabled, the receive pin (RX) of the RS-232 interface can be configured for use as an external trigger input. (See the TRIGGER command, Table 5-14).

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Fluke 45 user manual Setting the Trigger Type Configuration, External Triggering via the Computer Interface

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.