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Characteristics and Specifications

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N2797A User’s Guide

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This symbol indicates the Environmental Protection Use Period (EPUP) for the

product’s toxic substances for the China RoHS requirements.

The CE mark is a registered trademark of the European Community. ISM GRP 1-A

denotes the instrument is an Industrial Scientific and Medical Group 1 Class A

product. ICES/NMB-001 indicates product compliance with the Canadian

Interference-Causing Equipment Standard.

WEEE Compliance

This product complies with the WEEE Directive (2002/96/EC) marking

requirements. The affixed label indicates that you must not discard this

electrical/electronic product in domestic household waste.

Product Category: With reference to the equipment types in the WEEE

Directive Annex I, this product is classed as a "Monitoring and Control

Instrumentation" product. Do not dispose in domestic household. To

return unwanted products, contact your local Keysight office, or refer to

www.keysight.com for more information.

Dimensions

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Содержание N2797A

Страница 1: ...Keysight N2797A Extreme Temperature Single Ended Active Probe User s Guide ...

Страница 2: ...d in this document are furnished under a license and may be used or copied only in accor dance with the terms of such license Restricted Rights Legend If software is for use in the performance of a U S Government prime contract or subcon tract Software is delivered and licensed as Commercial computer software as defined in DFAR 252 227 7014 June 1995 or as a commercial item as defined in FAR 2 101...

Страница 3: ...eaning the Probe 22 Returning the Probe for Service 23 Safety Information 24 2 Probe Calibration 27 Calibrating the Probe on Infiniium Oscilloscopes 28 Calibrating the Probe on InfiniiVision Oscilloscopes 30 3 Characteristics and Specifications 31 Dimensions 33 4 Performance Data Plots 35 5 Performance Verification 37 Test 1 DC Input Resistance 39 Test 2 Bandwidth 40 Performance Test Record 46 Ind...

Страница 4: ...4 N2797A User s Guide Contents ...

Страница 5: ...cational research applications Its 1 MΩ input resistance and extremely low input capacitance 1 pF provide ultra low loading of the device under test This accompanied with superior signal fidelity makes this probe useful for most of today s digital logic voltages With a wide 8V dynamic range and 12V offset range this probe can be used in a wide variety of applications For high signal integrity prob...

Страница 6: ...precautions when handling Remove tip accessories when storing the probe CAUTION Before using the probe refer to Safety Information on page 24 CAUTION Handle the probe cable carefully to avoid damaging it through excessive bending or pulling Avoid any mechanical shocks to the probe in order to guarantee accurate performance and protection ...

Страница 7: ... your probe fix known defects and incorporate product enhancements To download the latest firmware go to www keysight com and search for your oscilloscope s topic Click on the Drivers Firmware Software tab NOTE The N2797A probe is designed for oscilloscopes with 1 MW AutoProbe interface channel inputs Table 1 Compatible Oscilloscopes and Support Oscilloscope Adapter Required Infiniium Oscilloscope...

Страница 8: ...l identification rings yellow green blue and purple allow you to quickly determine which channel input is associated with each probe On the probe place one colored ring near the probe s channel connector and place an identical color ring near the probe head Supplied Accessories The probe comes with the accessories shown in Figure 2 CAUTION All of the supplied accessories can be used at the probe s...

Страница 9: ...Using the Probe 1 N2797A User s Guide 9 Figure 2 Accessories Supplied With the Probe Not to Scale ...

Страница 10: ...rk with the probe but are not provided with the probe Notice that most of these accessories can not be used at extreme temperature range of the probe Table 2 Supplied Accessories Accessory Ambient Operating Temperature Quantity Flex Nose Clip red 20 C to 80 C 4 F to 176 F 2 Flex Nose Clip black 2 Pico Hook red 1 Pico Hook black 1 Rigid Probe Tip Same as probe 20 C to 85 C 4 F to 185 F 5 Solderable...

Страница 11: ...s a slightly reduced temperature range compared to the probe 20 C to 80 C 4 F to 176 F 2 red 2 black 5061 7390 red 5061 7391 black Pico Hook Nose Clips This adapter has a slightly reduced temperature range compared to the probe 20 C to 80 C 4 F to 176 F 1 red 1 black Long Y Lead Adapter with damping resistor 10 cm extreme temp Same as probe 20 C to 85 C 4 F to 185 F 2 5061 7386 Short Y Lead Adapte...

Страница 12: ... extreme temp 2 5061 7388 Long Y Lead Adapter 10 cm 0 C to 50 C 32 F to 122 F 1 5061 7392 Right Angle Ground 10 cm 0 C to 50 C 32 F to 122 F 2 5061 7400 Right Angle Ground 5 cm 2 5061 7399 Ground Lead 6 cm 0 C to 50 C 32 F to 122 F 2 5061 7395 Ground Lead 12 cm 2 5061 7396 Offset Ground 0 C to 50 C 32 F to 122 F 2 5061 7394 N2787A 3D Probe Positioner Not Specified ...

Страница 13: ...and the ground accessory To change an accessory gently pull it straight out of its contact socket along the axis of the probe Once the accessory is removed insert the new accessory until it is seated in the contact socket In order to insert the probe tip completely into the housing carefully press the probe tip against a hard surface Figure 3 Tip and Grounding Connections ...

Страница 14: ...nt needs including ease of use Table 5 Probe Configuration in Order of Decreasing Bandwidth Recommended Order of Use Probe Configuration Topic Typical Bandwidth 1 Rigid or Solderable Tip with Ground Blade on page 15 1 5 GHz 2 6 cm Y Leads with 0 1 Headers on page 16 1 0 GHz 3 Solderable Tip with Right Angle Ground on page 17 800 MHz 4 9 cm Y Leads with 0 1 Headers on page 18 800 MHz 5 Y Lead with ...

Страница 15: ...ation at room temperatures where hand probing is possible or at extreme temperatures when using a probe positioner that can withstand the required temperature The bandwidth with accessory is 1 5 GHz When inserting the tip insert the end with the ridge into the probe head as shown in Figure 4 Figure 4 Inserting the Rigid Tip WARNING Handle the probe with care to avoid injury especially when it is f...

Страница 16: ...or the solderable pins that are provided with each probe The sockets accept 0 56 to 0 86 mm round and 0 64 mm square 0 022 to 0 034 inch round and 0 025 inch square diameter pins The maximum insertion depth is 7 5 mm 0 295 inch and the outer insulation of the socket is less than 2 54 mm You can use it for 2 54 mm pitch 0 1 inch terminals The bandwidth with accessory is 1 0 GHz Figure 5 Probe with ...

Страница 17: ...d then slip the probe onto the free end of the solderable pin The bandwidth with accessory is 800 MHz Figure 6 Placing the Probe Onto the Solderable Tip NOTE The longer right angle ground lead introduces increased inductance in the ground path Therefore keep the right angle ground lead as straight as possible for maximum measurement bandwidth Loops and bends in the ground lead as shown in this pic...

Страница 18: ...vided with each probe The added convenience of the longer leads results in a slightly reduced bandwidth The bandwidth with accessory is 800 MHz The sockets accept 0 56 to 0 86 mm round and 0 64 mm square 0 022 to 0 034 inch round and 0 025 inch square diameter pins The maximum insertion depth is 7 5 mm 0 295 inch and the outer insulation of the socket is less than 2 54 mm You can use it for 2 54 m...

Страница 19: ...allenging devices much easier The bandwidth with accessory is 500 MHz Figure 8 Flexible Nose and Pico Hook Clips Most users prefer to attach the clips to the probe via the Y lead adapter as shown in the picture below Press the back of the clip to extend the grasping hook and then release to tighten the hook around the component you are testing Figure 9 Probe with Flexible Nose Clips Attached CAUTI...

Страница 20: ... variety of applications For example if you wanted to measure small AC noise riding on top of a 10V DC signal you could use DC offset to position the signal at the center of the screen to keep the probe within its dynamic range You could then zoom in to see the detail at a higher resolution Trying to measure a signal out of the dynamic range may result in a clipped or distorted waveform Figure 10 ...

Страница 21: ... ensure the input impedance of the oscilloscope matches the output impedance of the probe 50W 2 Connect a grounding accessory to the probe and connect the ground to the ground terminal on the oscilloscope 3 Connect the probe tip to the oscilloscope s probe compensation output 4 Enable autoscale on the oscilloscope 5 A square wave should now be displayed on the oscilloscope if the probe is function...

Страница 22: ...e does not operate properly or pass calibration tests notify your 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 Te...

Страница 23: ...XXX Description of failure or service required 3 Protect the probe by wrapping in plastic or heavy paper 4 Pack the probe in the original carrying case or if not available use bubble wrap or packing peanuts 5 Place securely in sealed shipping container and mark container as FRAGILE Contacting Keysight Technologies For technical assistance contact your local Keysight Call Center In the Americas cal...

Страница 24: ...njury WARNING Use Only Grounded Instruments Do not connect the probe s ground lead to a potential other than earth ground Always make sure the probe and the oscilloscope are grounded properly WARNING Connect and Disconnect Properly Connect the probe to the oscilloscope and connect the ground lead to earth ground before connecting the probe to the circuit under test Disconnect the probe input and t...

Страница 25: ...lean WARNING Do Not Operate With Suspected Failures Refer to qualified service personnel CAUTION The probe cable is a sensitive part of the probe and therefore you should be careful not to damage it through excessive bending or pulling Avoid any mechanical shocks to this product in order to guarantee accurate performance and protection ...

Страница 26: ...26 N2797A User s Guide 1 Using the Probe ...

Страница 27: ...libration removes attenuation errors offset errors and timing delays that are introduced by the probe This chapter contains basic calibration procedures for both Infiniium and InfiniiVision oscilloscopes For additional information on the probe calibration refer to the oscilloscope s user documentation CAUTION Always wear an ESD wrist strap when working with active probes Not doing so can result in...

Страница 28: ...on An optional N2787A 3D Probe Positioner or equivalent can be used to hold the probe during the calibration Procedure 1 Turn on the oscilloscope Allow the oscilloscope and probe to warm up for 20 minutes before performing the probe calibrations 2 If the oscilloscope needs calibration perform a user calibration before the probe calibration On the oscilloscope click Utilities Calibration 3 On the o...

Страница 29: ...avoid damaging the oscilloscope s Cal Out connector do not apply force to the PV fixture Light probe contact is all that is needed for the calibration CAUTION NEVER solder a probe tip to the thick film gold The gold will immediately dissolve into the solder and disappear NOTE If you are using the browser tip it is recommended that you use the N2787A 3D Probe Positioner to hold the probe in place N...

Страница 30: ...000 X series oscilloscopes connect the probe s signal tip to the front panel Demo 2 Probe Comp terminal and the ground tip to the ground terminal Figure 12 Probe Calibration Terminals on 3000 X Series Oscilloscope 3 Press the Channel on off key to turn the channel on if the channel is off 4 In the Channel Menu press the Probe softkey 5 Press the Calibrate Probe softkey and follow the instructions ...

Страница 31: ...ntal conditions should not exceed the probe s specified limits Table 6 Mechanical Characteristics Parameter Characteristic Probe Weight 108g approximate Cable Length 2m Table 7 Environmental Specifications Parameter Characteristic Ambient Operating Temperature 40 C to 85 C 40 F to 185 F Ambient Non Operating Temperature 40 C to 85 C 40 F to 185 F Operating Humidity 95 RH at 40 C Non Operating Humi...

Страница 32: ...o 20V Offset Range 12V DC Offset Error Output Zero 1 mV Flatness at 25 C Typical 0 3 dB 10 Hz 100 MHz Typical 0 8 dB 100 MHz 1 GHz Typical 2 0 dB 1 GHz 1 5 GHz Flatness Over Temperature 40 C to 85 C Typical 0 3 dB 10 Hz 100 kHz Typical 0 6 dB 100 kHz 100 MHz Typical 0 8 dB 100 MHz 500 MHz Typical 2 0 dB 500 MHz 1 GHz Typical 2 5 dB 1 GHz 1 5 GHz Input Resistance a 1 MΩ 3 specification Input Capaci...

Страница 33: ...ance with the Canadian Interference Causing Equipment Standard WEEE Compliance This product complies with the WEEE Directive 2002 96 EC marking requirements The affixed label indicates that you must not discard this electrical electronic product in domestic household waste Product Category With reference to the equipment types in the WEEE Directive Annex I this product is classed as a Monitoring a...

Страница 34: ...34 N2797A User s Guide 3 Characteristics and Specifications ...

Страница 35: ...5 Keysight N2797A User s Guide 4 Performance Data Plots Figure 13 shows the frequency response for the spring or rigid probe tip and an offset ground or ground blade Figure 13 Frequency Response Vout Vin ...

Страница 36: ...36 N2797A User s Guide 4 Performance Data Plots Figure 14 Input Impedance Equivalent Model Figure 15 Typical Input Impedance Plot ...

Страница 37: ...ations for the N2797A The recommended calibration test interval is once a year or as required Use the equipment listed in Table 9 on page 38 CAUTION Electrostatic discharge ESD can quickly and imperceptibly damage or destroy high performance probes resulting in costly repairs Always wear a wrist strap when handling probe components and insure that cables are discharged before being connected ...

Страница 38: ...1D5 Keysight 8720ES Calibration Standards No Substitute Keysight 85052D External Power Supply No Substitute Keysight 1143A AutoProbe Interface Adapter No Substitute Keysight N1022A B Outside thread 3 5 mm male to 3 5 mm female adapter No Substitute Keysight 5062 1247 Cable 2 3 5 mil SMA High Quality Keysight 8120 4948 Cable 1 5 mil Probe Power Extension No Substitute Keysight 01143 61602 PV DS Tes...

Страница 39: ...ide 39 Test 1 DC Input Resistance Procedure 1 Connect the DMM probes between the probe tip and ground at the tip of the probe 2 Set up the DMM to measure resistance The resistance should read 1 MW 3 3 Record the resistance in Table 10 on page 46 ...

Страница 40: ...ors This could be a very costly error to correct Procedure Initial Setup 1 Turn on the 8720ES VNA and let warm up for 20 minutes 2 Press the green Preset key on the 8720ES VNA 3 On the VNA press the Power key and set the power to 0 dBm 4 On the VNA press the AVG key and then select the Averaging Factor screen key Set averaging to 4 5 On the VNA press the Sweep Setup key and then press the sweep ty...

Страница 41: ... that the VNA knows where the probe under test is located along the transmission line 7 On the VNA press the Cal key 8 Press the cal menu screen key 9 Press the full 2 port screen key 10 Connect the PV fixture to the Port 1 on the VNA using a high quality SMA cables Connect the cable to the pincher side of PV fixture as shown in Figure 17 on page 42 11 The calibration reference plane is at the oth...

Страница 42: ...rt end of Calibration Standard to the non pincher side of the PV DS test board f Select short screen key under the Forward group g Wait until the VNA beeps indicating that it has completed the task h Connect load end of Calibration Standard to the non pincher side of the PV DS test board i Select the loads screen key under the Forward group j Press broadband screen key selection k Wait until the V...

Страница 43: ... task e Connect short end of Calibration Standard to the available end of the PORT 2 SMA cable f Select short screen key the Reverse group g Wait until the VNA beeps indicating that it has completed the task h Connect load end of Calibration Standard to the available end of the PORT 2 SMA cable i Select the loads screen key the Reverse group j Press broadband screen key selection k Wait until the ...

Страница 44: ...22 Press the omit isolation screen key 23 Press done 2 port cal screen key 24 Set the VNA s averaging to off 25 Save the reference plane cal by pressing the save recall key then the save state key 26 You may change name if you wish 27 Press the scale reference key Then set the scale to 1 dB per division and the reference position for 7 divisions 28 Set reference value for 0 dB 29 Press the measure...

Страница 45: ...V DS test board and attach to probe output on the AutoProbe Adapter 39 Connect the Calibration Standard load to PV DS test board non pincher side 40 Press scale reference key on the VNA 41 Set reference value to 20 dB 42 Hold probe in place as described previously 43 The display on screen is Vout Displaying Vout Vin Response on the VNA 44 Press the Display key 45 Then select the Data Memory screen...

Страница 46: ...formance Verification Performance Test Record The recommended Test Interval 1 year 2000 hours Table 10 Performance Test Record Probe Amplifier Test Limits Result Pass Fail Test 1 DC Input Resistance 1 MΩ 3 Test 2 Bandwidth 1 5 GHz ...

Страница 47: ... 3D probe positioner 12 O offset range 20 operating temperature accessories 11 12 probe 31 oscilloscope compatibility 7 Infiniium 7 InfiniiVision 7 oscilloscope compatibility 7 output impedance 32 P performance test record 46 performance verification 37 probe cleaning 22 configurations 14 handling 24 inspecting 22 service 23 probe accessories 14 probe calibration 27 Probe Calibration dialog box 28...

Страница 48: ...48 N2797A User s Guide Index ...

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