4 - Front Panel Operation

Condition

OV Condition

OCP Condition

SOA Condition

OT Condition

RI Condition

Rail Condition

Action

Usually overvoltage conditions are caused by an external source forcing voltage into the output of the ac source. Remove this external source to eliminate the overvoltage. You can also program the overvoltage level to a higher value, or turn the overvoltage protection off.

In other cases the output voltage may have exceeded the user-programmed overvoltage level. In this case the unit may have inadvertently been programmed to a voltage that exceeded the programmed overvoltage level. The VOLTage:PROTection command sets the overvoltage protection level.

Note: The overvoltage protection level is programmed in peak, not rms volts.

If the CURRent:PROTection:STATe command has been programmed to to disable the output when rms current limit is activated, the unit will shut down. The rms current limit threshold is set by the CURRent command. In this case you must check to see why the load is drawing more current than the limit that has been programmed by the CURRent command.

Protection circuits in the ac source let the load draw peak currents for short periods of time that exceed the continuous capability of the unit. This allows loads that require large inrush currents to turn on. The ac source will shut down if a combination of peak current duration and internal component temperature exceeds a predetermined limit.

When this occurs, it means that the load has been drawing peak output currents that are beyond the capability of the ac source to supply for extended periods. Slower output slew rates and reduced peak current limit settings can be used to control the conditions that cause SOA shutdowns.

When the internal operating temperatures of the ac source exceed predetermined thresholds, the output turns off. If this happens, you must let the unit cool down before continuing operation.

If the Remote Inhibit input has been programmed to to disable the output when it receives an external signal, the unit will shut down. The Remote Inhibit input is set by the OUTPut:RI:MODE command. In this case you must check to what external event produced a signal on the RI input.

The internal high voltage rail that provides power for the ac source’s output is continuously monitored for proper voltage level. If this voltage is not maintained within predetermined levels, the output will shut down. This can happen if an extenal source forces too much power into the ac source or if too much power is drawn from the ac source.

Remove the external source to eliminate the rail condition. Slower output slew rates and reduced peak current limit settings can also be used to control the conditions that cause rail shutdowns.

6 - Using Transient Voltage Modes

The ac source voltage can be programmed in the following transient operating modes:

STEP

causes the output to permanently change to its triggered value.

PULSE

causes the output to change to its triggered value for a specific time, as determined by the

 

Pulse menu parameters.

LIST

causes the output to sequence through a number of values, as determined by points entered

 

in the List menu.

FIXED

disables transient operation for the selected function.

50

Page 49 Page 51
Page 50
Image 50
Agilent Technologies 6812B, 6813B, 6811B manual Using Transient Voltage Modes, Pulse
Page 49 Page 51

6812B, 6811B, 6813B specifications

Agilent Technologies, a leader in electronic test and measurement equipment, offers a range of powerful signal sources including the 6843A, 6834B, 6814B, 6813B, and 6811B models. These instruments are designed to support various applications in research, development, and manufacturing, providing precise signal generation capabilities.

The Agilent 6843A is a versatile signal generator known for its exceptional frequency range and modulation capabilities. It supports an extensive bandwidth, making it ideal for applications that require high-frequency signal generation. With its superior phase noise performance, the 6843A is an excellent choice for radar, wireless communications, and electronic warfare applications. The instrument features an intuitive user interface, allowing engineers to set parameters quickly and efficiently.

Next, the Agilent 6834B offers exceptional performance characteristics, including high output power and low distortion. This signal generator is particularly noted for its ability to produce complex modulation formats, making it suitable for testing advanced wireless communication systems. With a reliable and stable output, the 6834B ensures accurate and repeatable measurements, which is vital for thorough testing processes.

The 6814B model stands out for its dual-channel capabilities, allowing users to generate simultaneous signals for testing multiple components or systems. This feature significantly enhances testing efficiency and flexibility for engineers. With built-in arbitrary waveform functionality, users can create custom waveforms, making the 6814B suitable for a wide range of applications including device characterization and signal processing research.

For those seeking a more compact solution, the Agilent 6813B provides essential signal generation features without compromising on performance. It is designed for a variety of applications across telecommunications and consumer electronics, featuring a straightforward interface and robust performance metrics.

Lastly, the 6811B is an entry-level yet capable model that supports a broad spectrum of testing needs. Perfect for educational and laboratory environments, it provides essential functionalities required for effective signal generation and analysis.

Overall, Agilent Technologies' 6843A, 6834B, 6814B, 6813B, and 6811B signal generators offer an array of features and technologies that cater to various application needs. Their precision, reliability, and user-oriented designs position them as invaluable assets in any testing environment, ensuring engineers can carry out their work with confidence and accuracy.
Top Page Image Contents