Keysight N2795/6A User Manual Download

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Keysight N2795/6A

Single-Ended Probes

User’s Guide

Summary of Contents for N2795/6A

Page 1: ...Keysight N2795 6A Single Ended Probes User s Guide...

Page 2: ...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 the exclusive authority by which the U S govern m...

Page 3: ...Tips and Grounds 12 Dynamic Range and Offset Voltage Limitations 19 Functional Test 20 Inspecting the Probe 21 Returning the Probe for Service 22 Safety Information 23 2 Characteristics and Specifica...

Page 4: ...4 N2795 6A User s Guide Contents...

Page 5: ...tegrate many of the characteristics needed for today s general purpose high speed probing component design characterization and educational research applications Its 1MW input resistance and extremely...

Page 6: ...jury especially when it is fitted with the sharp spring or rigid tip CAUTION This probe is an ESD sensitive devices particularly at the probe tips Follow standard ESD precautions when handling Remove...

Page 7: ...on the Drivers Firmware Software tab Table 1 Compatible Oscilloscopes and Probe Support Oscilloscope Software Version Maximum Number of Probes Supported Infiniium Z Series a a Requires N5442A adapter...

Page 8: ...es It s easy to change the probe tip and ground accessories Figure 1 shows locations for inserting the tip and the ground accessory To change an accessory gently pull it straight out of its contact so...

Page 9: ...sories Accessory Quantity Accessory Quantity Flex Nose Clip red 1 Right Angle Ground 10 cm 1 Flex Nose Clip black 1 Ground Blade 2 Rigid Probe Tip 2 Offset Ground 1 Spring Probe Tip 2 Flex Ground 1 Y...

Page 10: ...nector and place an identical color ring near the probe head Table 3 Replacement Accessory Kit Accessory Qty Part Number Flex Nose Clip red 1 5061 7390 Flex Nose Clip black 1 5061 7391 Rigid Probe Tip...

Page 11: ...adlight The probe is equipped with a white LED headlight to illuminate the area around the probe tip This headlight has a fixed intensity and is turned on and off by pressing the button that is locate...

Page 12: ...le 4 Probe Configurations in Order of Decreasing Bandwidth Recommended Order of Use Probe Configuration Topic Typical Bandwidth Rigid or Spring Tips with Offset Ground or Ground Blade on page 13 1 GHz...

Page 13: ...und blade as both the tips and ground blade are spring loaded and will maintain contact with the device under test even when your hand moves slightly The rigid spring tips and grounds can be mixed wit...

Page 14: ...RNING Handle the probe with care to avoid injury especially when it is fitted with the sharp rigid or spring tip When inserting the tip insert the end with the ridge into the probe head as shown in Fi...

Page 15: ...t However to maximize the performance of this setup you need to solder as many jumper wires as is practical from the ground pins of the package to the copper pad The more ground connections the less i...

Page 16: ...this can used to connect to connector headers or other accessories like the Flex Nose Clip Adapter as seen in the following pictures The sockets accept 0 56 0 86 mm round and 0 64 mm square 0 022 0 0...

Page 17: ...oday s miniature IC and component packaging techniques these clips can make probing challenging devices much easier Most users prefer to attach the clips to the probe via the Y lead adapter as shown i...

Page 18: ...the ground blade or offset ground However the longer leads means they have a larger inductance in the ground return path which corresponds to a lower performance than the ground blade and offset grou...

Page 19: ...or a wide 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 kee...

Page 20: ...d 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 oscillo...

Page 21: ...your Keysight Technologies Sales Office Inspect the probe If there is mechanical damage or defect or if the probe does not operate properly or pass calibration tests notify your Keysight Technologies...

Page 22: ...XXXX Description of failure or service required NOTE Include probing and browsing tips if you feel the probe is not meeting performance specifications or a yearly calibration is requested 3 Protect th...

Page 23: ...g or rigid tip WARNING Handle Probe Tips and Accessories Carefully Some of the probe tips and accessories are very sharp the browser tips for example You should handle these with care to avoid persona...

Page 24: ...rt 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 pro...

Page 25: ...oduct compliance with the Canadian Interference Causing Equipment Standard This product complies with the WEEE Directive 2002 96 EC marking requirements The affixed label indicates that you must not d...

Page 26: ...The product is marked with this symbol when it is necessary for you to refer to the instruction manual in order to protect against damage to the product or personal injury Earth terminal symbol Used...

Page 27: ...ronmental Specifications Parameter Characteristic Operating Temperature 0 C to 50 C Non Operating Temperature 40 C to 70 C 40 F to 158 F Altitude Operating 4 000m 13 000 ft Operating Humidity 95 room...

Page 28: ...Typical 0 8 dB 500 MHz 1 GHz Typical 1 3 dB 1 GHz 2 GHz b Input Capacitance 1 pF 1 pF Probe Noise Referred to Input 2 5 mVrms 2 5 mVrms Output Impedance 50 50 Internal Power Keysight AutoProbe Interfa...

Page 29: ...Characteristics and Specifications 2 N2795 6A User s Guide 29 Dimensions...

Page 30: ...30 N2795 6A User s Guide 2 Characteristics and Specifications...

Page 31: ...sight N2795 6A Single Ended Probes User s Guide 3 Performance Data Plots Figure 11 Frequency Response of N2796A Vout Vin NOTE Figure 11 is for the spring rigid probe tip and an offset ground or ground...

Page 32: ...32 N2795 6A User s Guide 3 Performance Data Plots Figure 12 Input Impedance Over Frequency Red measured Blue model...

Page 33: ...Performance Data Plots 3 N2795 6A User s Guide 33 Figure 13 Input Impedance Equivalent Model Figure 14 Typical Input Impedance Plot...

Page 34: ...34 N2795 6A User s Guide 3 Performance Data Plots...

Page 35: ...cifications for the N2795 6A single ended active probes The recommended calibration test interval is once a year or as required Use the equipment listed in CAUTION Electrostatic discharge ESD can quic...

Page 36: ...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...

Page 37: ...e 37 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 0 2 5...

Page 38: ...e a vise to hold the cables and test board stable while making measurements Be careful not to cross thread or force any connectors This could be a very costly error to correct Procedure Initial Setup...

Page 39: ...Connected to Probe Adapter not to scale Calibrating a Reference Plane To get a reliable measurement from the VNA you must calibrate a reference plane so that the VNA knows where the probe under test i...

Page 40: ...st Board Connected to VNA 8 Press the cal menu screen key 9 Press the full 2 port screen key 10 Connect one of the high quality SMA cables to port one and to the pincher side of PV DS test board 11 Th...

Page 41: ...f 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...

Page 42: ...42 N2795 6A User s Guide 4 Performance Verification Figure 17 SMA Cable Connected to Port 2 14 Get the opposite sex of the Calibration Standards for the next step...

Page 43: ...ard 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 Stan...

Page 44: ...ss the isolation screen key 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...

Page 45: ...creen key 37 You have now saved Vin waveform into the VNA s memory for future use Measuring Vout Response 38 Disconnect the PORT 2 cable from PV DS test board and attach to probe output on the AutoPro...

Page 46: ...n 47 Read marker frequency measurement and record it in the test record located later in this chapter 48 The bandwidth test passes if the frequency measurement is greater that the probe s bandwidth li...

Page 47: ...st Record Table 9 Performance Test Record Model Date Tested by Serial Recommended next test date Recommended Test Interval 1 year 2000 hours Probe Amplifier Test Limits Result Pass Fail Test 1 DC Inpu...

Page 48: ...48 N2795 6A User s Guide 4 Performance Verification...

Page 49: ...put resistance 28 inspecting 21 ISM1 A 25 K Keysight Technologies contacting 22 N N5442A adapter 7 O offset ground 9 13 offset range 19 operating temperature probe 27 oscilloscope compatible 7 softwar...

Page 50: ...Index 50 N2795 6A User s Guide...

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