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Agilent Technologies 5748A, 5752A, 5744A, 5743A Over-Temperature Protection, Power-Fail Protection

Models: 5751A 5744A 5743A 5750A 5749A 5752A 5747A 5742A 5748A 5741A 5745A 5746A

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Operating the Power Supply Locally 3

Over-Temperature Protection

The over-temperature protection circuit shuts down the power supply before the internal components can exceed their safe internal operating temperature. This can occur if there is a cooling fan failure. When an OTP condition occurs, the output is disabled, the display shows O7P, the PROT indicator blinks, and the OT status bit is set in the Questionable Condition status register. Resetting the OTP circuit can be automatic (non-latched) or manual (latched) depending on the Safe-Start or Auto-Restart mode.

In Safe-Start mode, the OTP circuit is latched. The display continues to show O7P and the PROT indicator continues to blink. To reset the OTP circuit, press the OUT ON button.

In Auto-Restart mode, the OTP circuit is non-latched. The power supply returns to its last setting automatically when the over- temperature condition is removed.

Power-Fail Protection

If the AC power stops briefly, but returns before the power supply has reset, the power-fail protection circuit trips and the PF status bit is set in the Questionable Condition status register. Resetting the power-fail protection can be automatic (non-latched) or manual (latched), depending on the Safe-Start or Auto-Restart mode.

In Safe-Start mode, the output of the power supply is Off, as specified by the reset state when AC power returns. In Auto-Restart mode, the power supply recovers its last settings when AC power returns.

Front Panel Lock-Out

The front panel controls can be locked to protect from accidental power supply parameter change. Press and hold the LIMIT button to toggle between Locked front panel and Unlocked front panel. The display will cycle between LFP and UFP. Releasing the LIMIT button while one of the modes is displayed, selects that mode.

In Unlocked front panel mode, the front panel controls are enabled to program and monitor the power supply parameters.

In Locked front panel mode, the VOLTAGE and CURRENT knobs, the OCP/488 button, and the OUT ON button are disabled

The power supply will not respond to attempts to use these controls. The display will show LFP to indicate that the front panel is locked. The OVP/UVL button remains active to preview the OVP and UVL setting. The LIMIT button also remains active to preview the output voltage and current setting or to unlock the front panel.

 

This function operates independently of the SCPI SYST:COMM:RLST command.

NOTE

If the front panel has been locked from the front panel, it cannot be unlocked by

 

 

SYST:COMM:RLST. Conversely, if the front panel has been locked by

 

SYST:COMM:RLST, it cannot be unlocked from the front panel.

 

 

Series N5700 User’s Guide

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Agilent Technologies 5748A, 5752A, 5744A, 5743A Over-Temperature Protection, Power-Fail Protection, Front Panel Lock-Out
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5751A, 5744A, 5743A, 5750A, 5749A specifications

Agilent Technologies has been a leader in electronic measurement and analysis, with a suite of powerful instruments that cater to various applications in research, development, and manufacturing. Among these, the Agilent 5746A, 5745A, 5741A, 5748A, and 5742A models stand out for their advanced capabilities and features.

The Agilent 5746A is a high-performance signal analyzer that excels in time and frequency domain analysis. This device offers a wide frequency range and exceptional dynamic range, making it suitable for both RF and microwave applications. Its advanced digital signal processing allows for high-resolution spectrum analysis and real-time signal processing, which is essential for engineers and researchers working on complex signals.

The Agilent 5745A is known for its versatility as a multifunctional signal generator. It combines the functionalities of a vector signal generator with the precision of a traditional oscillator. This model provides high-quality waveform generation for a variety of modulation schemes, making it ideal for testing communication systems and conducting research in advanced modulation techniques.

The Agilent 5741A is a precision power meter that offers accurate measurements of RF power in a compact format. It is equipped with state-of-the-art sensing technology that ensures reliable and repeatable measurements. The 5741A is particularly useful for monitoring power levels in transmitters and receivers, and its intuitive interface makes it user-friendly for both novices and experienced professionals.

For those focused on harmonic and intermodulation distortion analysis, the Agilent 5748A provides exceptional performance. This model allows users to analyze distortion products in various devices with precision, helping in the design and testing of amplifiers and other RF components. Its comprehensive sweep functionality enables users to observe the behavior of devices across a wide frequency range.

Finally, the Agilent 5742A complements the range with its dedicated spectrum analyzing capabilities. Offering high sensitivity and ability to capture short-lived events, this model is optimal for monitoring transient signals. The 5742A is frequently used in the telecommunications sector to ensure signal integrity and compliance with regulatory standards.

Together, these Agilent Technologies instruments provide a comprehensive toolkit for professionals in electronics and telecommunications, enabling detailed analysis, accurate measurements, and advanced signal generation. Their integration of modern technologies ensures that users can tackle the complexities of today’s electronic environments with confidence and precision.