Verification and Calibration Appendix B

CV Source Effect

Test category = performance

This test measures the change in output voltage that results from a change in AC line voltage from the minimum to maximum value within the line voltage specifications.

1Turn off the power supply and connect the ac power line through a variable voltage transformer.

2Connect a DVM and an electronic load as shown in figure A. Set the variable voltage transformer to nominal line voltage.

3Turn on the power supply and program the output current to its maximum programmable value (Imax) and the output voltage to its full-scale value.

4Set the electronic load for the output’s full-scale current. The CV annunciator on the front panel must be on. If it is not, adjust the load so that the output current drops slightly.

5Adjust the transformer to the low-line voltage (85 VAC for 100/120 nominal line; 170 VAC for 200/240 nominal line).

6Record the output voltage reading from the DVM.

7Adjust the transformer to the high-line voltage (132 VAC for 100/120 nominal line; 265 VAC for 200/240 nominal line).

8Record the output voltage reading on the DVM. The difference between the DVM reading in steps 6 and 8 is the source effect, which should not exceed the value listed in the test record card for the appropriate model under CV Source Effect.

CV Noise

Test category = performance

Periodic and random deviations in the output combine to produce a residual AC voltage superimposed on the DC output voltage. This residual voltage is specified as the rms or peak-to-peak output voltage in the frequency range specified in Appendix A.

1Turn off the power supply and connect the load resistor, differential amplifier, and an oscilloscope (ac coupled) to the output as shown in figure C. Use the indicated load resistor for 750W outputs; use the indicated load resistor for 1500W outputs.

2As shown in the diagram, use two BNC cables to connect the differential amplifier to the + and − output terminals. Each cable should be terminated by a 50 Ω resistor. The shields of the two

BNC cables should be connected together. Connect the output of the differential amplifier to the oscilloscope with a 50 Ω termination at the input of the oscilloscope.

3Set the differential amplifier to multiply by ten, divide by one, and 1 Megohm input resistance. The positive and negative inputs of the differential amplifier should be set to AC coupling. Set the oscilloscope’s time base to 5 ms/div, and the vertical scale to 10 mV/div. Turn the bandwidth limit on (usually 20 or 30 MHz), and set the sampling mode to peak detect.

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Agilent Technologies N5700 manual CV Source Effect, CV Noise

N5700 specifications

Agilent Technologies, now part of Keysight Technologies, is renowned for its innovative solutions in electronic measurement and instrumentation. Among its impressive portfolio, the Agilent N5700 series of power supplies stands out, providing precision, reliability, and versatility for a range of applications in test and measurement.

The N5700 series features multiple models, each designed to meet the varying power requirements of test systems and electronic devices. One of its key characteristics is its adjustable output voltage and current, allowing users to set parameters according to specific test needs. With outputs ranging from 0 to 60 V and up to 6 A, the N5700 series caters to both low and high-power applications effectively.

A notable technology integrated into the N5700 series is its advanced measurement capabilities. The built-in voltmeter and ammeter enable real-time monitoring of output voltage and current, ensuring precise control over the power supplied to the device under test. This feature is particularly advantageous in troubleshooting and optimization scenarios, providing engineers with immediate feedback on performance.

The N5700 also embraces the latest in power supply control technology with its intuitive user interface. The front panel incorporates a clear display and simple navigation controls, allowing users to program settings easily and access functions without extensive training. Additionally, remote programming capabilities via GPIB, USB, or LAN facilitate integration into automated test setups, enhancing productivity and efficiency.

Thermal management is another hallmark of the N5700 series. Its design ensures effective heat dissipation, enabling reliable operation even under demanding conditions. This robustness is critical in environments where consistent performance is essential, such as in research laboratories and manufacturing facilities.

Furthermore, safety features are thoughtfully included in the N5700 series, such as overvoltage protection, overcurrent protection, and short-circuit protection. These elements assure users that their devices and test setups remain secure during testing, minimizing the risk of damage.

In summary, the Agilent N5700 series power supplies encapsulate the fusion of precision, advanced measurement technology, user-friendly design, thermal management, and robust safety features. This combination makes them an invaluable tool for engineers and researchers engaged in electronic testing and development across various industries. With its versatility and reliability, the N5700 series continues to play a pivotal role in advancing electronic measurement methodologies.