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Table of Contents
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Summary of Contents for Keysight N2790A
- Page 1 Keysight N2790A Differential Voltage Probe User Guide...
- Page 2 WARNING notice until the indicated DOCUMENT THAT CONFLICT WITH THESE beyond those set forth in the EULA shall conditions are fully understood and apply, except to the extent that those met. terms, rights, or licenses are explicitly Keysight N2790A Differential Voltage Probe User Guide...
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Page 3: Table Of Contents
Selecting the Correct Attenuation on the Probe and the Oscilloscope Adjusting the Probe Offset Level Characteristics and Specifications Characterization Plots Performance Verification Procedures DC Differential Gain Accuracy Bandwidth Performance Verification Test Record Service Keysight N2790A Differential Voltage Probe User Guide... - Page 4 Contents Keysight N2790A Differential Voltage Probe User Guide...
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Page 5: Introduction
Keysight N2790A Differential Voltage Probe User Guide Introduction The N2790A differential probe allows you to safely measure high-voltage floating circuits with the oscilloscope grounded. It is ideal for many applications such as motor speed controls, power supply designs, and electronic high-power converters. The N2790A offers sufficient dynamic... -
Page 6: Supplied Accessories
Introduction If the shipping container is damaged, or the cushioning materials show signs of stress, notify the carrier as well as your Keysight Technologies, Sales Office. Keep the shipping materials for the carrier’s inspection. The Keysight Technologies office will arrange for repair or replacement option at Keysight Technologies without waiting for claim settlement. -
Page 7: Optional Accessories
Introduction Optional Accessories Figure 2 shows the parts you can order separately with the N2790A Probe. For extreme temperature probing, you can order the N7013/14A Extreme Temperature Probing kit. This extreme temperature probing kit is compatible only with the N2790A differential voltage probe. The quantity... -
Page 8: Cleaning The Probe
Disconnect the probe from all power sources and clean it with a soft cloth dampened with a mild soap and water solution. Be careful not to get water in the attenuation switch. Make sure the probe is completely dry before reconnecting it to a power source. Keysight N2790A Differential Voltage Probe User Guide... -
Page 9: Safety Information
(depending on voltage and current conditions.) Keysight N2790A Differential Voltage Probe User Guide... - Page 10 Only fuses with the required rated current, voltage, and specified type WARNING (normal blow, time delay, etc.) should be used. Do not use repaired fuses or short-circuited fuse-holders. To do so could cause a shock or fire hazard. Keysight N2790A Differential Voltage Probe User Guide...
- Page 11 Operation of any electrical instrument in such an environment constitutes a definite safety hazard. Do not use the instrument in a manner not specified by the manufacturer, WARNING the protection provided by the PROBE ASSEMBLY may be impaired. Keysight N2790A Differential Voltage Probe User Guide...
- Page 12 CAUTION sensitive parts and, therefore, you should be careful not to damage them through excessive bending or pulling. Avoid any mechanical shocks to this product in order to guarantee accurate performance and protection. Keysight N2790A Differential Voltage Probe User Guide...
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Page 13: Using The Probe
Contact of the cable with hazardous live voltages may result in electric shock, fire, or equipment failure. The N2790A probe is powered by the auto-probe interface found on Keysight InfiniiVision and Infiniium Series oscilloscopes. Using the Supplied Accessories •... - Page 14 The differential probe, original cables, and original accessories should not be exposed to extreme temperatures. When probing with the extension cables the bandwidth performance will be reduced, see on page 18. Table 2 Keysight N2790A Differential Voltage Probe User Guide...
- Page 15 Connecting the Extreme Temperature Differential Extension Cables Connect the red and black extreme temperature hook tip adapters to the extreme temperature differential extension cables which are already connected to the existing probe cables. Keysight N2790A Differential Voltage Probe User Guide...
- Page 16 Figure 5 Connecting the Extreme Temperature Banana-to-Socketed Tip Adapters There is an over-range LED on the probe to indicate when you have exceeded the maximum voltage of the probe. Keysight N2790A Differential Voltage Probe User Guide...
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Page 17: Oscilloscope
Adjusting the Probe Offset Level The probe offset level is adjusted using the tool provided with the N2790A probe. Adjust the offset level by turning the potentiometer adjustment located on the auto-probe pod. -
Page 18: Characteristics And Specifications
Characteristics and Specifications Characteristics and Specifications Characteristics and specifications for the N2790A Differential Voltage Probe are shown below. Table 2 Electrical Characteristics and Specifications Description Characteristic/Specification without the N7013/14A Characteristic/Specification with the N7013/14A Extreme Extreme Temperature Probing Kit Temperature Probing Kit Attenuation Ratios 50:1 and 500:1 (Selectable via switch on probe.) - Page 19 Non-operating: –51 °C to +71 °C Altitude Operating: 2,000 m (6,561 feet) Non-operating: 15,300 m (50,200 feet) Humidity Operating: 80% room humidity @ 40 °C Non-operating: 90% room humidity @ 65 °C Pollution Degree Pollution Degree 2 Keysight N2790A Differential Voltage Probe User Guide...
- Page 20 Characteristics and Specifications Table 6 Safety Specifications Description UL Listed: File No. E326557 Compliant with: UL 61010-031, CSA 22.2 No. 61010-031-07 Keysight N2790A Differential Voltage Probe User Guide...
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Page 21: Characterization Plots
Characterization Plots Figure 6 Frequency Response. Graph of dB(Vin), dB(Vout), and dB(Vout/Vin) Graph of dB (Vout/Vin) frequency response when inputs are driven in common (common mode rejection). Figure 7 Common Mode Rejection Ratio Keysight N2790A Differential Voltage Probe User Guide... - Page 22 Characterization Plots Above 2 MHz, the maximum input operating voltage decreases as the frequency increases. Figure 8 Derating Plot Keysight N2790A Differential Voltage Probe User Guide...
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Page 23: Performance Verification Procedures
These procedures require the application of high voltage to the inputs of WARNING the N2790A probe. Because the adapter used in this procedure has exposed metal surfaces, only qualified personnel should perform any testing with voltage levels exceeding 30V rms. All pertinent safety rules and guidelines for elevated voltage measurements should be followed and adhered to. -
Page 24: Dc Differential Gain Accuracy
Disable the Fluke calibrator output, disconnect the channel 1 active head from channel 1 of the oscilloscope. Connect the output of the N2790A probe to channel 1 of the oscilloscope. Attach the BNC adapter to the Fluke channel 1 active head. -
Page 25: Bandwidth
Recommended Date of Next Certification: Certification Temperature: Test Probe Setting Test Limits Test Results Gain 50:1 196 mV to 204 mV Gain 500:1 196 mV to 204 mV Bandwidth 50:1 ≥ 71 mV Keysight N2790A Differential Voltage Probe User Guide... -
Page 26: Service
Keysight Service Center for calibration testing procedures. The probe should be tested once a year or as required by other standards. If repair is needed and the N2790A is under warranty, normal warranty services will apply. If the N2790A is not under warranty, repair costs will be applied. - Page 27 Keysight N2790A Differential Voltage Probe User Guide...
- Page 28 This information is subject to change without notice. © Keysight Technologies 2018 N2790-97005 Edition 4, September 2018 www.keysight.com...