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Summary of Contents for Keysight Technologies N2840A
- Page 1 Keysight N2840/1/2/3A and N2853A High-Impedance Passive Probes User’s Guide...
- Page 2 Notices Technology Licenses © Keysight Technologies, 2012, 2017, 2018 otherwise modify the Software. With respect to any technical data as defined by FAR No part of this manual may be reproduced in The hardware and/or software described in 2.101, pursuant to FAR 12.211 and 27.404.2...
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Page 3: Table Of Contents
Contents Contents Introduction Oscilloscope Compatibility Handling the Probe Accessories Cleaning the Probe Inspecting the Probe Using the Probe Channel Identification Tags Retractable Hook Ground Spring Alligator Ground Lead BNC Adapter Printed-Circuit Board Adapter Dual-Lead Adapter Insulating Cap IC Insulating Cap To Replace the Probe Tip Low-Frequency Compensation Safety Information... -
Page 4: Introduction
The N2840/1/2/3A and N2853A high-impedance passive probes and accessories are a great choice for high quality at a very reasonable price. With the exception of the N2840A, the probes include probe ID capability that allows most oscilloscopes, such as Keysight’s InfiniiVision and Infiniium series, to detect the probe’s impedance and attenuation ratio. -
Page 5: Accessories
The probes come with the accessories shown in Figure 1. A probe tip is pre-installed on the probe. N2840A probes do not include the BNC adapter. Two additional accessories not supplied with the probes are available: the PCB socket adapter and the dual-lead adapter. Refer to “Printed-Circuit Board... - Page 6 BNC Adapter 1250-3978 Low-Frequency Compensation Adjustment Tool — Channel Identification Tags (2 of each color: green, — yellow, purple, and pink) a Not supplied with N2840A. Table 3 Available Accessories Accessory Kit Order Dual-Lead Adapter 0960-2923 Printed Circuit Board (PCB) Adapter 0960-2922 N2840/1/2/3A and N2853A User’s Guide...
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Page 7: Cleaning The Probe
Keysight Technologies Sales Office. 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 at Keysight Technologies’... -
Page 8: Using The Probe
Using the Probe Using the Probe This section describes how to attach the various accessories as well as the channel ID tags. Before making measurements, compensate the probe as explained in “Low-Frequency Compensation" on page 16. Must be Grounded. Before making connections to the input leads of WARNING this probe, ensure that the probe’s output connector is attached to the channel input of the oscilloscope and that the oscilloscope is properly... -
Page 9: Retractable Hook
Using the Probe Retractable Hook Use the retractable hook tip to make quick connections for hands-free probing. To attach the retractable hook tip to the probe, gently slip the tip onto the end of the probe barrel. Once the tip is attached to the probe, push the tip’s collar towards the probe body to expose the hook. -
Page 10: Alligator Ground Lead
The BNC adapter connects the probe tip to a BNC (female) connector. Insert the probe’s tip into the adapter as shown in Figure The BNC adapter is not provided with N2840A probes but can be N OT E ordered (part number 1250-3978... -
Page 11: Printed-Circuit Board Adapter
Using the Probe Printed-Circuit Board Adapter The Printed-Circuit Board (PCB) socket adapter provides a stable, permanent probing location, which minimizes the effects of a longer ground connection. Figure 7 shows the PCB adapter soldered on a PC board. Mounting hole dimensions are included in the figure. - Page 12 Using the Probe Figure 8 PCB Socket Adapter Plugged onto Breadboard N2840/1/2/3A and N2853A User’s Guide...
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Page 13: Dual-Lead Adapter
Using the Probe Dual-Lead Adapter The dual-lead adapter allows you to connect the probe to common probing test clips and hooks that have 0.025-inch (0.635 mm) pins. Insert the probe’s tip into the adapter as shown in Figure 9. The adapter’s leads are approximately 60 mm long. -
Page 14: Ic Insulating Cap
Using the Probe IC Insulating Cap The IC insulating cap fits over the probe tip and provides a convenient self-aligning connection to an IC’s pins. This helps to maintain contact on small fine-pitch pins and prevents shorting adjacent pins by preventing the probe tip from sliding between the legs of the component. -
Page 15: To Replace The Probe Tip
Using the Probe To Replace the Probe Tip A dull probe tip can make it more difficult to obtain a reliable connection. If this happens, replace the tip with one of the replacement probe tips that are provided with the probe. The probe tip screws onto the end of the probe barrel. Do not over tighten the replacement probe tip. -
Page 16: Low-Frequency Compensation
Low-Frequency Compensation Low-Frequency Compensation The probes can be adjusted for low-frequency (LF) compensation. LF compensation matches the probe cable capacitance to the oscilloscope input capacitance. This matching assures good amplitude accuracy from DC to the upper bandwidth limit frequencies. A poorly compensated probe influences the overall system performance (probe and oscilloscope) and introduces measurement errors resulting in inaccurate readings and distorted waveforms. - Page 17 Low-Frequency Compensation 4 If you are using a 2000X, 3000X, or 4000X InfiniiVision oscilloscopes, use the guided probe compensation: a Press the Probe softkey. b Press the Probe Comp softkey to run the compensation. If the probe is already properly adjusted, the guided N OTE compensation will not prompt you to make the adjustment.
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Page 18: Safety Information
Safety Information Safety Information To avoid personal injury and to prevent fire or damage to this product WARNING or products connected to it, review and comply with the following safety precautions. Be aware that if you use this probe assembly in a manner not specified, the protection this product provides may be impaired. - Page 19 Safety Information This probe has a cable with a built-in wear indicator. When the WARNING insulation of the cable deteriorates, the wear indicator becomes visible. Do not use the probe when the wear indicator is visible. Using a product with a worn cable may result in electric shock, fire, or equipment failure.
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Page 20: Characteristics
This section lists the characteristics for the probes. The probe and oscilloscope should be warmed up for at least 20 minutes before any testing and the environmental conditions should not exceed the probe’s specified limits. Table 4 Electrical Characteristics Probe Description N2840A N2841A N2842A N2843A N2853A Bandwidth (–3 dB) 50 MHz... - Page 21 Characteristics Figure 14 Typical Voltage Derating Curve (Measurement CAT II) The maximum input voltage rating of the probe decreases as the WARNING frequency of the applied signal increases. Refer to the oscilloscope documentation for the oscilloscope’s CAUTION acceptable input range and do not exceed this limit when using the probes.
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Page 22: Returning The Probe For Service
If the probe is found to be defective we recommend sending it to an authorized service center for all repair and calibration needs. Perform the following steps before shipping the probe back to Keysight Technologies for service. 1 Contact your nearest Keysight sales office for information on obtaining an RMA number and return address. - Page 23 8, 20, Safety Information, cable length, service, care, probe, supplied accessories, 5, channel identification tags, N2840A 50 MHz probe, 4, characteristics, N2841A 150 MHz probe, 4, cleaning, N2842A 300 MHz probe, 4, compensation range, temperature, operating and storage,...
- Page 24 Index N2840/1/2/3A and N2853A User’s Guide...
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