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Keysight N2818/9A Differential Probes User Guide

19

Using the Probe

Probe Offset Adjustment

The N2818A/19A differential probes can be adjusted for zeroing out the

probe's offset voltage using the trimmer tool supplied with the probe.

Follow the procedure described below to perform the offset zero

calibration.

1 Connect the probe to an oscilloscope channel input. Turn on the

oscilloscope and wait for 20 minutes to allow the oscilloscope and

probe to warm up.

2 If the oscilloscope needs calibration, perform a user calibration before

the probe calibration.

3 Using the probe's connection accessories, short the + and - inputs

together.

4 Press Default setup and Autoscale of the oscilloscope.
5 Press the channel button for the probe and set the oscilloscope

channel to DC coupled mode.

6 Set the oscilloscope to Averaging mode (x8 or higher) to reduce

oscilloscope noise, if needed.

7 Set the vertical scale of the oscilloscope to 100 mV/div.
8 Using the offset adjustment tool that comes with the probe, adjust the

probe offset voltage to zero volts.

NOTE

Allow the oscilloscope and probe to warm up for 20 minutes before

performing the adjustment.

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Содержание N2818

Страница 1: ...Keysight N2818 9A Differential Probes User s Guide...

Страница 2: ...s standard com mercial license which is embodied in its End User License Agreement EULA a copy of which can be found at http www keysight com find sweula The license set forth in the EULA represents t...

Страница 3: ...12 Connecting the Extreme Temperature Probing Kit to the Probe 13 Using the N2819A Probe 16 Single and Variable Pitch Signal Pins 17 Extension Leads 18 Micro IC Clips and Pincer Clips 18 DC Blocking...

Страница 4: ...A Differential Probes User Guide Contents N2819A Performance Verification 40 Scope Vertical Accuracy 40 DC Differential Gain 41 Bandwidth 41 Returning the Probe for Service 44 Contacting Keysight Tech...

Страница 5: ...urements and high speed digital system designs Table 1 Quick Probe Comparison Figure 1 Probes Accessories Not Shown CAUTION Before using the probe refer to Safety Information on page 21 N2818A without...

Страница 6: ...le 2 Compatible Oscilloscopes and Support Handling the Probe Handle the probe with care and refer to the safety notices in this manual Note that the probe cable and the extreme temperature extension c...

Страница 7: ...e damaged shipping container or cushioning material until the contents of the shipment have been checked for completeness and the probe has been checked mechanically and electrically Check the accesso...

Страница 8: ...ory in the kit is the same as listed in Table 3 and originally provided with the probe Figure 2 N2818A Supplied Accessories Table 3 N2818A Supplied Accessories WARNING The measurement category of a co...

Страница 9: ...ed in Table 4 Figure 3 N2818A Optional Accessories Extreme Temperature Probing Kit Table 4 N2818A Optional Accessories Accessory Qty Extreme Temperature Hook Tip Adapters Black 1 Extreme Temperature H...

Страница 10: ...wn in Figure 4 and listed in Table 5 on page 11 These accessories are not compatible with N2818A probes Replacements can be ordered with the N2793 68700 replacement kit The quantity for each accessory...

Страница 11: ...Pincer Clip black 1 Micro IC Clip red 1 Micro IC Clip black 1 Extension Lead 0 8 mm J P 5 cm long red 1 Extension Lead 0 8 mm J P 5 cm long black 1 Extension Lead 0 8 mm J P 10 cm long red 1 Extension...

Страница 12: ...Supplied Clips WARNING Must be Grounded Before making connections to the input leads of this probe ensure that the probe s output connector is attached to the channel input of the oscilloscope and th...

Страница 13: ...ted tip adapters for connecting to 0 025 square pins black and red The N7014A extreme temperature probing kit includes One pair of extreme temperature banana to socketed tip adapters for connecting to...

Страница 14: ...xtreme temperature differential extension cables to the existing probe cables Figure 6 Connecting the Extreme Temperature Differential Extension Cables 2 Connect the red and black extreme temperature...

Страница 15: ...r Connect the red and black extreme temperature banana to socketed tip adapters to the extreme temperature differential extension cables which are already connected to the existing probe cables Figure...

Страница 16: ...robing accessories into the end of the probe s tip A label on the probe tip identifies the probe s positive and negative leads Figure 9 Probe Clip Lead and Pin Connections WARNING Must be Grounded Bef...

Страница 17: ...serted into the Probe Tip Figure 11 shows the variable pitch pins inserted into the probe tip Gently rotate the pins to change the distance between the pins Figure 11 Variable Pitch Pins Inserted into...

Страница 18: ...ong extensions leads Figure 12 Extension Leads on Probe Micro IC Clips and Pincer Clips Use the micro IC and pincer clips to probe miniature IC and components These clips attach to the end of the exte...

Страница 19: ...oscilloscope needs calibration perform a user calibration before the probe calibration 3 Using the probe s connection accessories short the and inputs together 4 Press Default setup and Autoscale of...

Страница 20: ...20 Keysight N2818 9A Differential Probes User Guide Using the Probe Figure 14 Location of the Offset Adjustment...

Страница 21: ...described in this document WARNING To avoid personal injury and to prevent fire or damage to this product or products connected to it review and comply with the following safety precautions Be aware t...

Страница 22: ...osed Circuit To avoid injury remove jewelry such as rings watches and other metallic objects Do not touch exposed connections and components when power is present WARNING For Indoor Use Only Only use...

Страница 23: ...rized modification to the probe WARNING Do not use the probe or oscilloscope in a manner not specified by the manufacturer CAUTION The probe cable and the extreme temperature extension cables are sens...

Страница 24: ...t you must connect the protective earth terminal of the instrument to the protective conductor of the mains power cord The mains plug shall only be inserted in a socket outlet provided with a protecti...

Страница 25: ...ns 1 75 ns 437 ps Gain Accuracy of reading 2 2 2 Absolute Maximum Rated Input Voltage each side to ground 60V 60V 40V Maximum Differential Input Voltage DC AC Peak 20V 20V 15V Maximum Common Mode Inpu...

Страница 26: ...70 C Altitude Operating 3 000 m 9 842 feet Nonoperating 15 300 m 50 196 feet Humidity Operating 25 85 room humidity Nonoperating 25 85 room humidity Pollution Degree Pollution Degree 2 Description CEI...

Страница 27: ...cal Characteristics Description Characteristic All Are Typical Bandwidth 3 dB 30 kHz to 1 GHz Impedance 50 Maximum Input Range 100V Insertion Loss 30 kHz to 1 GHz 1 0 dB maximum VSWR 30 kHz to 1 GHz 1...

Страница 28: ...ser Guide Using the Probe N2818A Performance Plots Input Step Signal 10 90 rise time 3 5 ns 20 80 rise time 2 2 ns Measured Step Response 10 90 rise time 3 5 ns 20 80 rise time 2 2 ns Figure 15 N2818A...

Страница 29: ...Keysight N2818 9A Differential Probes User Guide 29 Using the Probe Figure 16 N2818A Frequency Response Figure 17 N2818A Frequency Response when Inputs Driven in Common Mode CMRR...

Страница 30: ...Keysight N2818 9A Differential Probes User Guide Using the Probe Figure 18 N2818A Input Impedance Equivalent Model Showing Measured Input Capaci tance Values Figure 19 N2818A Typical Input Impedance P...

Страница 31: ...Keysight N2818 9A Differential Probes User Guide 31 Using the Probe Figure 20 N2818A Typical Derating Curve of the Absolute Maximum Input Voltage Either Input to Ground...

Страница 32: ...tial Probes User Guide Using the Probe N2819A Performance Plots Input 10 90 rise time 900 ps 20 80 rise time 800 ps Measured 10 90 rise time 900 ps 20 80 rise time 800 ps Figure 21 N2819A Normalized D...

Страница 33: ...Keysight N2818 9A Differential Probes User Guide 33 Using the Probe Figure 22 N2819A Frequency Response Figure 23 N2819A Frequency Response when Inputs Driven in Common Mode CMRR...

Страница 34: ...Keysight N2818 9A Differential Probes User Guide Using the Probe Figure 24 N2819A Input Impedance Equivalent Model Showing Measured Input Capaci tance Values Figure 25 N2819A Typical Input Impedance P...

Страница 35: ...Keysight N2818 9A Differential Probes User Guide 35 Using the Probe Figure 26 N2819A Typical Derating Curve of the Absolute Maximum Input Voltage Either Input to Ground...

Страница 36: ...scope Bandwidth 200 MHz 1 M 50 selectable input Keysight MSO9254A Display probe output Signal Generator Precision DC voltage source Amplitude accuracy less than or equal to 0 25 1 M 50 selectable load...

Страница 37: ...ngs and enable the output Waveform square wave Load 1 M Amplitude 0 1V pk pk Frequency 1 kHz 5 On the oscilloscope select the amplitude measurement and record the DC amplitude approximately 100 mV of...

Страница 38: ...adapter 4 Attach the differential probe input leads by clipping the alligator clamp to the BNC adapter banana post 5 Enable the 9500B s output 6 Configure the oscilloscope to the following settings Am...

Страница 39: ...fication Details Serial Number Tested By Certification Date Recommended Date of Next Certification Certification Temperature Test Probe Setting Test Limits Test Results DC Differential Gain Accuracy 1...

Страница 40: ...Critical Specifications Recommended Model Part Number Functions Digitizing Oscilloscope Bandwidth 1 GHz 1 M 50 selectable input Keysight MSO9254A Display probe output Signal Generator Precision DC vo...

Страница 41: ...he 9500B s output and disconnect the active head from channel 1 of the oscilloscope 2 Connect the N2818A probe output to channel 1 of the oscilloscope 3 Attach the BNC adapter to the 9500B s CH1 activ...

Страница 42: ...e pin tips onto the PV fixture s center conductor and ground plane as identified in Figure 27 Figure 27 Probing Locations on PV Fixture 9 Enable the 9500B s output 10 Configure the oscilloscope to the...

Страница 43: ...fication Details Serial Number Tested By Certification Date Recommended Date of Next Certification Certification Temperature Test Probe Setting Test Limits Test Results DC Differential Gain Accuracy 1...

Страница 44: ...t model number for example N2818A Product Serial Number for example MYXXXXXXXX Description of failure or service required 3 Protect the probe by wrapping in plastic or heavy paper 4 Pack the probe in...

Страница 45: ...ysight Technologies 44 M Mechanical Characteristics 26 micro IC clips 11 18 N N2818A accessories 8 N2818A Optional Accessories 9 N2819A accessories 10 O offset adjustment tool 11 oscilloscope compatib...

Страница 46: ...46 Keysight N2818 9A Differential Probes User Guide Index...

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