Keysight InfiniiMax III N2800A Series User Manual
  1. Manuals
  2. Brands
  3. Keysight Manuals
  4. Measuring Instruments
  5. InfiniiMax III N2800A Series
  6. User manual

Keysight InfiniiMax III N2800A Series User Manual

Differential probes
Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
Keysight N2800A Series
Differential InfiniiMax III Probes
User's Guide

Advertisement

Table of Contents
loading

Related Manuals for Keysight InfiniiMax III N2800A Series

Summary of Contents for Keysight InfiniiMax III N2800A Series

  • Page 1 Keysight N2800A Series Differential InfiniiMax III Probes User’s Guide...
  • Page 2 States and international copyright laws. customarily provided to the public. Accordingly, Keysight provides the Software to U.S. govern- adhered to, could result in damage ment customers under its standard commercial Manual Part Number...

  • Page 3: Table Of Contents

    Contents 1 Using InfiniiMax III Series Probes InfiniiMax III Probe Amplifiers Compatible Oscilloscopes InfiniiMax III and III+ Probing System Family Diagram N5477A Sampling Scope Adapter N2852A AutoProbe II to AutoProbe III Interface Adapter Proper Handling Techniques Safety Information Cleaning the probe 2 InfiniiMax III Probe Heads N5445A InfiniiMax III Differential Browser Probe Head N2848A InfiniiMax III+ QuickTip InfiniiMode Probe Head...
  • Page 4 7 Performance Plots MX0109A and N2836A 26 GHz Solder-In Probe Heads (with N2803A) N2838A/N5439A 25 GHz PCB ZIF Tip/Head (with N2803A) N5440A/N5439A 28 GHz Ceramic ZIF Tip/Head (with N2803A) N5447A/N5439A 28 GHz Ceramic High-Sensitivity ZIF Tip/Head (with N2803A) N5441A 16 GHz Solder-In Head (with N2803A) N5444A 30 GHz SMA 2.92 mm Head (with N2803A) N5445A 30 GHz Browser Head, 1 mm span (with N2803A) N5445A 30 GHz Browser Head, 2 mm span (with N2803A)

  • Page 5: Using Infiniimax Iii Series Probes

    Keysight InfiniiMax III Series Probes User’s Guide 1 Using InfiniiMax III Series Probes InfiniiMax III Probe Amplifiers Compatible Oscilloscopes InfiniiMax III and III+ Probing System Family Diagram N5477A Sampling Scope Adapter N2852A AutoProbe II to AutoProbe III Interface Adapter Proper Handling Techniques...

  • Page 6: Infiniimax Iii Probe Amplifiers

    Using InfiniiMax III Series Probes InfiniiMax III Probe Amplifiers There are four InfiniiMax III amplifier models: • N2800A 16 GHz Probe Amplifier • N2801A 20 GHz Probe Amplifier • N2802A 25 GHz Probe Amplifier • N2803A 30 GHz Probe Amplifier Each probe amplifier is pre-loaded with its specific measured S-parameters.
  • Page 7 To disconnect the probe amplifier, loosen the clutch on the oscilloscope input and disconnect the probe amplifier. If you are using an InfiniiMax III probe amplifier with Keysight’s 86100D sampling oscilloscope, you will need to use the N5477A sampling scope adapter.
  • Page 8 The clutches on the Infiniium 90000 X-series do not require a mechanical calibration. They will maintain N OT E the same tolerance as the Keysight torque wrench (8 in lbs ±1 in lbs). Probe Amplifier Bandwidth Upgrades The InfiniiMax III probe amplifiers are upgradeable. When you order a probe bandwidth upgrade, you receive a new probe with a new model number and new serial number.

  • Page 9: Compatible Oscilloscopes

    N2852A 10.10 Is your oscilloscope software up-to-date? Keysight periodically releases software updates to support 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 model number. Click on the “Drivers, Firmware & Software” tab under the Technical Support link.

  • Page 10: Infiniimax Iii And Iii+ Probing System Family Diagram

    Using InfiniiMax III Series Probes InfiniiMax III and III+ Probing System Family Diagram The following diagram shows the InfiniiMax III and InfiniiMax III+ probes and probe heads. The diagram is not drawn to scale. Figure 3 InfiniiMax III / III+ Probing System InfiniiMax III Series Probes User’s Guide...
  • Page 11 Using InfiniiMax III Series Probes For extreme temperature testing, use the N5450B InfiniiMax extreme temperature extension cable with the MX0109A or N5441A solder-in head. The MX0109A or N5441A probe heads can withstand temperatures from –55°C to +150°C for up to 750 and 250 test cycles respectively. None of the N2800/1/2/3A probe amplifiers can withstand the extreme temperatures (–55°C CAUTION to +150°C) that the N5450B can withstand.

  • Page 12: N5477A Sampling Scope Adapter

    The N5477A sampling oscilloscope adapter can also be used to connect the InfiniiMax III probing system to generic 50 Ohm test equipment as long as the 1143A power supply and 5062-1247 NMD male-to-3.5mm female adapter are used. Both of these parts can be ordered through Keysight Technologies. InfiniiMax III Series Probes User’s Guide...

  • Page 13: N2852A Autoprobe Ii To Autoprobe Iii Interface Adapter

    N2852A AutoProbe II to AutoProbe III Interface Adapter This adapter allows you to connect the N2800A / N2801A / N2802A / N2803A InfiniiMax III probe to a Keysight UXR-Series (40GHz or higher) Infiniium oscilloscope that has the AutoProbe III interface.

  • Page 14: Proper Handling Techniques

    This section will assist you in properly handling your InfiniiMax III N2800A-series probes to prevent damage and maintain high performance. For more safe-handling information, go to www.keysight.com/find/scope-demo, click on See Keysight's probes in action, and then InfiniiMax III ESD Best Practices demo video listed under the Document Library tab.
  • Page 15 Using InfiniiMax III Series Probes Figure 5 Static-Safe Work Station Many scopes including Keysight's 90000X series have a front-panel ground socket. You can plug the wrist strap into the ground socket as seen in the following picture. Figure 6 Wrist Strap Connected to Oscilloscope Ground Socket...
  • Page 16 Using InfiniiMax III Series Probes These techniques for a static-safe work station should not be used when working on WARNING circuitry with a voltage potential greater than 500 volts. Connecting a Probe to an Oscilloscope Channel To protect against ESD damage, always use the following steps when connecting your probe to the oscilloscope.
  • Page 17 Using InfiniiMax III Series Probes When connecting a probe head to a probe amplifier, push straight in. When disconnecting a CAUTION probe head from an amplifier, pull the probe head connectors straight out of the sockets. Never bend the probe head in order to pry it loose from the amplifier. Also, do not wiggle the probe head up and down or twist it to remove the connectors from the sockets.
  • Page 18 Using InfiniiMax III Series Probes Figure 10 Probe Improperly Disconnected from Oscilloscope while Probe Head is Connected to the Probe Amplifier Probing the DUT When making your measurements, you’ll often need to probe different locations on the DUT. You can safely move any of the following three probe heads without having to first break the amplifier-to-head connection: •...

  • Page 19: Safety Information

    Do not attempt internal service or adjustment. Service should be carried out by a WARNING Keysight Technologies authorized service personnel. For any service needs, contact Keysight Technologies. InfiniiMax III Series Probes User’s Guide...
  • Page 20 Using InfiniiMax III Series Probes The probe cable is a sensitive part of the probe and, therefore, you should be careful CAUTION not to damage it through excessive bending or pulling. Avoid any mechanical shocks to this product in order to guarantee accurate performance and protection. InfiniiMax III Series Probes User’s Guide...

  • Page 21: Cleaning The Probe

    Using InfiniiMax III Series Probes Cleaning the probe If the probe requires cleaning, disconnect it from the oscilloscope and clean it with a soft cloth dampened with a mild soap and water solution. Make sure the probe is completely dry before reconnecting it to the oscilloscope. InfiniiMax III Series Probes User’s Guide...
  • Page 22 Using InfiniiMax III Series Probes InfiniiMax III Series Probes User’s Guide...

  • Page 23: Infiniimax Iii Probe Heads

    Keysight InfiniiMax III Series Probes User’s Guide 2 InfiniiMax III Probe Heads N5445A InfiniiMax III Differential Browser Probe Head N2848A InfiniiMax III+ QuickTip InfiniiMode Probe Head N5439A InfiniiMax III ZIF Probe Head MX0109A and N2836A InfiniiMax III Solder-in Probe Heads N5441A InfiniiMax III Solder-in Probe Head (Discontinued) N5444A InfiniiMax III 2.92 mm / 3.5 mm / SMA Probe Head...

  • Page 24: N5445A Infiniimax Iii Differential Browser Probe Head

    InfiniiMax III Probe Heads N5445A InfiniiMax III Differential Browser Probe Head The N5445A browser head (30 GHz) is the best choice for the general-purpose trouble shooting of differential signals with spring-loaded tips and variable spacing from 20 mil to 125 mil (or 0.5 mm to 3.1 mm).
  • Page 25 InfiniiMax III Probe Heads Figure 12 Adjusting the Tip Span Tip-Span Entry for Probe Calibration When calibrating the probe, you will be prompted to enter the span setting on the oscilloscope’s Probe Calibration dialog box. To determine the tip span, do the following steps: Adjust the browser’s tip span for your measurement.
  • Page 26 InfiniiMax III Probe Heads Mounting the Browser There are two holes on the back side of the browser. Use these holes to mount the browser to a customer designed holder. Figure 14 below shows the dimensions of these mounting holes. Figure 14 Dimensions of Mounting Holes Probe Along the Browser’s Axis To prevent tip damage, probe along the browser’s axis as shown in...
  • Page 27 InfiniiMax III Probe Heads Figure 16 Improper Probe Handling Do not apply too much force when browsing. The weight of the probe in your hand should be CAUTION sufficient. The axial travel of the probe is about 15 mils (0.4 mm). The browser’s protective cap should be kept on the browser at all times except when probing.
  • Page 28 InfiniiMax III Probe Heads Table 2 N5445A Replaceable Parts Description Part Number Browser tips N5476A Ground Blade N4855A Ground Blade Screws N4856A N2787A 3D Probe Positioner Using the N2787A 3D probe positioner with the N5445A browser probe head reduces the chance of breaking the browser tips and ensures that the tips maintain solid contact.

  • Page 29: N2848A Infiniimax Iii+ Quicktip Infiniimode Probe Head

    InfiniiMax III Probe Heads N2848A InfiniiMax III+ QuickTip InfiniiMode Probe Head The N2848A QuickTip probe head is used with an N2849A QuickTip and together they provide the following advantages: • Easy-to-make secure magnetic mechanical connection between probe head and QuickTip as shown in Figure 19.
  • Page 30 InfiniiMax III Probe Heads can optionally cut off the ground leads or fold them out of the way. Be aware that without the ground leads, the mechanical stability of the QuickTip will be reduced and you will need to stabilize the probe head. Figure 20 Probing with the N2848A Probe Head and N2849A QuickTip Do not replace or repair the N2849A QuickTip’s resistor or ground leads.
  • Page 31 InfiniiMax III Probe Heads N2849A QuickTips are also compatible with N2851A QuickTip InfiniiMode Probe Heads, which are designed for 1130/1/2/4A InfiniiMax I and 1168/9A InfiniiMax II probes. Connecting a QuickTip to the DUT Use the following tips when soldering the QuickTips to your DUT: •...
  • Page 32 InfiniiMax III Probe Heads Cleaning the Magnetic Connections If the three magnetic connections in the head become dirty, clean the connections using the following steps: Use compressed air or a cloth to remove any loose dirt. Gently rub a small piece of tack putty (supplied with the probe) against the magnetic connections to clean off any remaining surface grime.

  • Page 33: N5439A Infiniimax Iii Zif Probe Head

    InfiniiMax III Probe Heads N5439A InfiniiMax III ZIF Probe Head The N5439A Zero Insertion Force (ZIF) probe head provides 28 GHz bandwidth. The head supports three types of economical replaceable tips which are shown in Table 4. Solder as many tips onto your DUT as needed. Because of the ZIF tip’s extremely low loading, the tips can remain on the DUT as you easily move the probe head from one probing site to the next.
  • Page 34 If you need to position the resistors different than shown in this figure (that is, resistor bodies close together or spread apart), use Keysight’s N2807A and N2808A PrecisionProbe products to perform an AC calibration of the probe, which properly captures the response.
  • Page 35 InfiniiMax III Probe Heads Break off a ZIF tip/handle combination from the packaging holder at the point shown in the figure. Figure 23 Five ZIF Tips on Packaging Flux and tin the leads on the target DUT. Figure 24 Preparing the DUT Leads While holding the plastic form, form the ZIF tip wires to match the DUT’s pitch and angle.
  • Page 36 InfiniiMax III Probe Heads Figure 25 Soldering the ZIF Tip Pull the ZIF handle from the ZIF tip in the direction shown in Figure 26. ZIF tips can be carefully handled with your fingertips and reinserted into a plastic handle if necessary. Figure 26 Removing the Handle from the ZIF Tip You can connect ZIF tips to any of the locations on a DUT that you need to probe.
  • Page 37 InfiniiMax III Probe Heads Always use the lever when inserting or removing ZIF tips. CAUTION Figure 27 Probe Head with Location of the Lever Figure 28 Probe Head Connected to a Soldered ZIF Tip For more repeatable results, orient the probe connection perpendicular to the device as shown in N OT E Figure InfiniiMax III Series Probes User’s Guide...
  • Page 38 InfiniiMax III Probe Heads Figure 29 Probe Oriented Perpendicular to Device To move the probe head to a different tip, press the lever and remove the probe head from the ZIF tip. The ZIF tip remains soldered to the DUT. Then, simply connect the ZIF head to another ZIF tip at a different location on the DUT.

  • Page 39: Mx0109A And N2836A Infiniimax Iii Solder-In Probe Heads

    InfiniiMax III Probe Heads MX0109A and N2836A InfiniiMax III Solder-in Probe Heads The following two solder-in probe heads are available for InfiniiMax III amplifiers. • MX0109A Extreme Temperature Solder-in probe head • N2836A InfiniiMax III Solder-in probe head These probe heads are economical semi-permanent connections that provide up to 26 GHz of system bandwidth.
  • Page 40 If you need to position the mini-axial lead resistors different than shown in this figure (that is, resistor bodies close together or spread way apart), use Keysight’s N2807A and N2808A Precision Probe products to perform an AC calibration of the probe. The AC calibration will capture the response properly.
  • Page 41 InfiniiMax III Probe Heads Best Practices for MX0109A and N2836A Connection to DUT Figure 32 Probe Head Connection to DUT Soldering the MX0109A / N2836A Probe Head to the DUT To solder the probe head to your DUT, complete the following steps. This procedure does not show soldering the ground leads.
  • Page 42 InfiniiMax III Probe Heads Figure 34 Tin the Leads Use tweezers to form the probe head wires to fit your DUT’s geometry. Flux the DUT leads and your probe head wires. Figure 35 Applying Flux to Leads and Wires Position the probe head wires on the DUT leads and quickly re-flow the solder as shown in Figure Do not leave the iron in contact with the probe head for more than a few seconds at a time.
  • Page 43 InfiniiMax III Probe Heads Extreme Temperature Testing with MX0109A Probe Head The MX0109A probe head can withstand temperatures from –55°C to +150°C thereby making it suitable for extreme temperature environments such as temperature chambers. For extreme temperature testing, use the MX0109A probe head with the N5450B InfiniiMax extreme temperature extension cable.
  • Page 44 InfiniiMax III Probe Heads Prevent abrasion and tears in the cable’s jacket. Do not rest the extension CAUTION cables on any metal objects or objects with sharp edges. Do not kink the cables. The cables are designed to be flexible, but are not CAUTION designed to be bent sharply.

  • Page 45: N5441A Infiniimax Iii Solder-In Probe Head (Discontinued)

    InfiniiMax III Probe Heads N5441A InfiniiMax III Solder-in Probe Head (Discontinued) The N5441A InfiniiMax III solder-in probe head is an economical semi-permanent connection that provides up to 16 GHz of system bandwidth. The span of the leads can be adjusted from 5 mil - 80 mil (0.127 mm - 2 mm). The N5441A probe head can be used with the N5450B InfiniiMax extreme temperature extension cable.
  • Page 46 InfiniiMax III Probe Heads Figure 38 Applying Flux Tin the leads with a small amount of solder. Figure 39 Tin the Leads Use tweezers to form the probe head wires to fit your DUT’s geometry. Flux the DUT leads and your probe head wires. Figure 40 Applying Flux to Leads and Wires Position the probe head wires on the DUT leads and quickly re-flow the solder as shown in Figure...
  • Page 47 InfiniiMax III Probe Heads Figure 41 Positioning Wires InfiniiMax III Series Probes User’s Guide...

  • Page 48: N5444A Infiniimax Iii 2.92 Mm / 3.5 Mm / Sma Probe Head

    InfiniiMax III Probe Heads N5444A InfiniiMax III 2.92 mm / 3.5 mm / SMA Probe Head The N5444A InfiniiMax III 2.92 mm/3.5 mm/SMA probe head provides 30 GHz bandwidth and allows you to connect two 2.92 mm, 3.5 mm, or SMA cables to make a differential measurement on a single oscilloscope channel.
  • Page 49 Probe Offset Calibration with the N5444A To achieve more accurate probe offset calibration with the N5444A, an SMA shorting adapter (Keysight part number: 1250-3999) is required. This adapter is provided with the N5444A (with unit serial number US50072545 or higher) and should be connected to the N5444A's "—"...
  • Page 50 InfiniiMax III Probe Heads The latest Infiniium firmware includes instructions on the Probe Calibration dialog box to remind you to install the adapter. If the Infiniium oscilloscope's firmware is older than version 5.50.33, you can still attach the adapter and the resulting calibration will be valid. InfiniiMax III Series Probes User’s Guide...

  • Page 51: N2835A Infiniimax Iii Differential Connectivity Kit And Accessories

    InfiniiMax III Probe Heads N2835A InfiniiMax III Differential Connectivity Kit and Accessories In addition to the individual probe heads described in the previous topics, the N2835A differential connectivity kit is also available for the InfiniiMax III probes. This kit provides multiple quantities of the four InfiniiMax III probe heads as shown Figure 45.
  • Page 52 InfiniiMax III Probe Heads Table 5 Supplied Accessories (Sheet 2 of 2) Part Description Supplied Number Ground Blades N5445-68700 InfiniiMax III Series Probes User’s Guide...

  • Page 53: Strain Relieving The Probe Heads

    Figure 46 Using tack-putty to strain relieve a probe head and amplifier You can also use putty with a positioner, such as the Keysight N2787A. The same positioner can also be used to support your probe amplifier as shown in Figure 18 page 28.
  • Page 54 InfiniiMax III Probe Heads Low-temperature Hot Glue You can also use low-temperature hot glue to secure cables. Only use LOW temperature hot glue. To remove the hot glue, warm it with a heat gun set on CAUTION low. Only heat the hot glue enough to remove it. Figure 48 Using low-temperature hot glue to secure a probe head General Tips on Strain Relief Keep in mind that different accessories have different cable stiffness.

  • Page 55: Maintaining Probe Heads

    Keysight InfiniiMax III Series Probes User’s Guide 3 Maintaining Probe Heads Replacing Axial Resistor Tips Replacing N5441A Probe Head Wires Many probe heads come equipped with replaceable resistor or wire tips which can be replaced or repaired. Using the procedures in this chapter, you can extend the life of the following items: •...
  • Page 56 Maintaining Probe Heads Replacing Axial Resistor Tips The procedure in this sections shows you how to replace the 130 ohm axial resistors that are located at the tip of the: • MX0109A solder-in probe head • N2836A solder-in probe head •...
  • Page 57 Maintaining Probe Heads Figure 49 Clamping the Part Grab each resistor lead or wire with tweezers and pull very gently up. Touch the soldering iron to solder joint just long enough for the resistor to come free of the probe head tip. Figure 50 Removing the Resistor Clean the soldering iron tip of any excess solder before using.
  • Page 58 Maintaining Probe Heads Use the soldering iron and solder to fill the holes in preparation for mounting the new resistors (or wires). Do not leave the iron in contact with the tip any longer than necessary. CAUTION Use the flux pencil to coat the solder joint area with flux. Locate the trim gauge which is supplied with the N2836-68701 replacement axial resistor kit.
  • Page 59 Rosin flux pencil, RMA type (Kester #186 or equivalent) Flush cutting wire cutters Magnifier or low power microscope Keysight supplied trim gauge (01169-23801) Procedure Use the vise or clamp to position the tip an inch or so off the work surface for easy access.
  • Page 60 Maintaining Probe Heads Figure 53 Clamping the Probe Head As shown in Figure 54, remove the old wires with tweezers while re-flowing the solder from the underside of the probe. Apply heat quickly to avoid damaging your probe. CAUTION Figure 54 Removing the Old Wire If necessary, add a small amount of solder to the holes and apply flux.
  • Page 61 Maintaining Probe Heads Figure 55 Adding Solder and Flux Re-flow the solder from the underside and insert a new piece of wire. It is best to shape the wire into an “L” before attempting to insert. Do not dwell with the iron in contact with the probe head. CAUTION Figure 56 Adding a New Wire Figure 57 New Wires Properly Attached...
  • Page 62 Maintaining Probe Heads Figure 58 Trim Wire Stubs Use the included trim gauge to cut the wire lengths. Doing so ensures the best performance from your probe head. Figure 59 Trim Gauge Placed on Wires Figure 60 Removing Excess Wire Check the DC resistance of each probe leg when you have replaced the wires.

  • Page 63: Performance Specifications / Characteristics

    Keysight InfiniiMax III Series Probes User’s Guide 4 Performance Specifications / Characteristics InfiniiMax III Warranted Specifications N2800A/1A/2A/3A Probe Amplifiers Characteristics InfiniiMax III Probe Heads Characteristics InfiniiMax III Probe Heads Dimensions Environmental Specifications Safety Specifications All entries included in this chapter are characteristics unless otherwise N OT E noted.

  • Page 64: Infiniimax Iii Warranted Specifications

    Performance Specifications / Characteristics InfiniiMax III Warranted Specifications Table 9 Warranted Specifications Probe Head Probe Amplifier Bandwidth DC Input Resistance N5439A ZIF probe head with N2803A 30 GHz probe amp 26 GHz =100 kW ± 2%, diff N5440A ceramic 450 W ZIF tip =50 kW ±...

  • Page 65: N2800A/1A/2A/3A Probe Amplifiers Characteristics

    Performance Specifications / Characteristics N2800A/1A/2A/3A Probe Amplifiers Characteristics The characteristics listed in Table 10 are mainly determined by the N2800A/1A/2A/3A probe amplifiers. Table 10 InfiniiMax III Probe Amplifier Characteristics (Sheet 1 of 2) InfiniiMax III Probe Amplifier With 450 W Probe Heads With 200 W Probe Heads With N5444A 2.92 mm / 3.5 Feature...
  • Page 66 Performance Specifications / Characteristics Table 10 InfiniiMax III Probe Amplifier Characteristics (Sheet 2 of 2) InfiniiMax III Probe Amplifier With 450 W Probe Heads With 200 W Probe Heads With N5444A 2.92 mm / 3.5 Feature mm / SMA Probe Head (N5439A, N5445A, N5441A, (N5447A ZIF tip with N5439A N2838A, N2836A, MX0109A,...

  • Page 67: Infiniimax Iii Probe Heads Characteristics

    Performance Specifications / Characteristics InfiniiMax III Probe Heads Characteristics The characteristics listed in Table 11 are for the N2803A 30 GHz probe amplifier using different probe heads. These characteristics are mainly determined by the probe heads. Performance listed in this table is with the highest bandwidth probe amp (N2803A 30 GHz) model in InfiniiMax III probe family.

  • Page 68: Infiniimax Iii Probe Heads Dimensions

    Performance Specifications / Characteristics InfiniiMax III Probe Heads Dimensions All dimensions included in this section are in millimeters [inches]. MX0109A Extreme Temperature Solder-in Head Dimensions N2836A InfiniiMax III Solder-in Head Dimensions InfiniiMax III Series Probes User’s Guide...
  • Page 69 Performance Specifications / Characteristics N2838A InfiniiMax III PCB ZIF Tip with N5439A ZIF Head Dimensions InfiniiMax III Series Probes User’s Guide...
  • Page 70 Performance Specifications / Characteristics N2848A InfiniiMax III QuickTIp Probe Head with N2849A QuickTip Dimensions InfiniiMax III Series Probes User’s Guide...
  • Page 71 Performance Specifications / Characteristics N5440A/N5447A InfiniiMax III Ceramic ZIF Tip with N5439A ZIF Head Dimensions N5441A InfiniiMax III Solder-in Head Dimensions InfiniiMax III Series Probes User’s Guide...

  • Page 72: Environmental Specifications

    Performance Specifications / Characteristics Environmental Specifications Environmental Condition Specification Altitude 2000m Temperature Operating: 5 to 40 Non-Operating: -40 to 70 Humidity 80% up to 31 C, decreasing linearly to 50% RH at 40 Pollution Degree InfiniiMax III Series Probes User’s Guide...

  • Page 73: Safety Specifications

    Performance Specifications / Characteristics Safety Specifications Compliant to IEC 61010-031:2015 EN 61010-031:2015 InfiniiMax III Series Probes User’s Guide...
  • Page 74 Performance Specifications / Characteristics InfiniiMax III Series Probes User’s Guide...

  • Page 75: Calibration / Deskew Procedure

    Keysight InfiniiMax III Series Probes User’s Guide 5 Calibration / Deskew Procedure To perform a calibration/deskew for the InfiniiMax III Probing system, you will be using the N5443A Calibration/Deskew Fixture. This fixture enables you to not only calibrate / deskew your InfiniiMax III probe, but it also ensures you properly position the probe amplifier during the procedure via the plastic holder.

  • Page 76: Procedure

    Calibration / Deskew Procedure Procedure Allow the probe to warm up for 20 minutes before performing the N OT E calibration procedure. To perform a DC calibration / calibrated skew, make sure the 50 ohm terminator (included with N5443A) is connected to the fixture as shown below. Hold the N5443A upright and connect the fixture to the Cal Out on the oscilloscope.
  • Page 77 Calibration / Deskew Procedure Connect the probe amplifier to one of the channel inputs on the oscilloscope. Insert the amplifier into the top of the fixture holder. The amplifier can slide up and down in the holder to adjust the probe head position. Always wear an ESD wrist strap when working with active probes.
  • Page 78 Calibration / Deskew Procedure Form the wires as shown below if using the N5441A solder-in probe head. Connect your probe head to the amplifier. Position the probe head wires (if you are using the ZIF or Solder-in probe heads) so they curl towards the scope as shown below.
  • Page 79 Calibration / Deskew Procedure Press the Menu button on the probe amplifier to bring up the Probe Setup dialog box on the oscilloscope. In the Probe Setup dialog box, click on the Calibrate Probe ... button. This will open the Probe Calibration dialog box.
  • Page 80 Calibration / Deskew Procedure A dialog box will then open that tells you how to connect the probe head to the calibration/deskew fixture. The fixture has three spring-loaded fingers (shown below) that clamp probe head wires to N OT E the fixture if you are using the ZIF probe head or the Solder-in probe head.
  • Page 81 Calibration / Deskew Procedure Never solder a probe tip to the thickfilm gold. The gold will immediately dissolve into the CAUTION solder and disappear. Follow the instructions on the oscilloscope to clamp the wires to either the signal or ground. When connecting the probe wires to the fixture, press down on the spring-loaded fingers described in Step 12 and insert the probe wires.
  • Page 82 Calibration / Deskew Procedure and checking that you have a stable step on screen (note that pressing autoscale will close the Probe Calibration dialog box). When connecting the probe head to the fixture, do not press down with much force or you CAUTION could snap off the fixture from the Cal Out connection.

  • Page 83: Performance Verification

    It is also important to note that the performance measured here is of the probe by itself. Keysight high performance real-time scopes (and sampling scopes under certain conditions) will apply probe correction that will further enhance the performance of the probes.

  • Page 84: Bandwidth Performance Verification

    Needs proper test port cables and/or adaptors to provide male 2.92 mm connectors at reference planes. If test port cables are 2.4 mm or 1.85 mm cables, then Keysight 11904A and 11904D adaptors can be used to convert to 2.92 mm male connectors.
  • Page 85 Performance Verification VNA Setup • Power level: –6 dBm. • Sweep: Log Frequency 50 MHz to 34 GHz, 284 points (100 pts/decade). • IF BW: 1 kHz. • Test port cables and adaptors (if needed) to provide male 2.92 mm connectors at measurement planes.
  • Page 86 Performance Verification Connect the 1250-1749 adapter and N5443A PV fixture assembly to the calibrated ports of the PNA as shown in Figure 62. A small bench vise is useful to hold PV fixture steady. Figure 62 Setup for measuring “Vin” of probe Connect the N5477A AutoProbe II adapter to the 1143A power supply and turn on the power supply.
  • Page 87 Performance Verification the probe head should be tipped slightly so the tip wires touch the center trace and ground plane at the same time. Depress the actuators on the pinchers and carefully insert one wire under the center pincher and the other wire under one of the side pinchers. Either polarity of the probe can be tested and will yield the same results (but opposite phase) if the probe is working properly.
  • Page 88 Performance Verification Under “Trace/Math/Memory” select “Data->Memory”. This will save the de-embedded input voltage trace into the memory. Figure 64 De-embedded “Vin” trace Now move the 2.92 mm male test port 1 connector to the 5062_1247 adapter and N5477A Autoprobe II adapter assembly. Connect the Maury Microwave 8775B2 2.92 mm male broadband load to the 1250_1749 adaptor and N5443A PV fixture assembly.
  • Page 89 Performance Verification Trigger VNA to perform a single sweep. Press “Trigger” under Channel Setup, and then the green soft-key for “Single”. Under “Scale” menu, adjust the reference level until the 50 MHz point (left side of the screen) is at center screen. Reference level should be approximately -15.3 dB, but can vary a few tenths of a dB either way.
  • Page 90 Performance Verification Figure 66 De-embedded “Vout” trace Under menu “Trace/Math/Memory” select “Data/Memory” in the “Data Math” box. This will divide the current trace (de-embedded vout trace) by the memory trace (de-embedded vin trace) and therefore show the voltage transfer function of the probe or “vout/vin”. Again, adjust the “Reference Level”...
  • Page 91 You are not required to test the bandwidth specification with both probe heads. If you have the choice between using the ZIF probe head or the browser, Keysight suggests using the ZIF probe head because measurements are more repeatable with it and it is easier to make a proper connection.
  • Page 92 Performance Verification Figure 68 Probe Tips on Microstrip InfiniiMax III Series Probes User’s Guide...
  • Page 93 Performance Verification Figure 69 N2787A 3D Probe Positioner used to measure the N5445A browser with the N2803A amp InfiniiMax III Series Probes User’s Guide...
  • Page 94 N OT E Copying this data from the PRC is the simplest most reliable method to get the data. To download the PRC, visit http://www.Keysight.com/find/PRC. ! freq S11 S21 S12 S22 !Port 1=female 3.5mm connector of 1250-1749 adaptor, Port 2=probe point on N5443A fixture # Hz S DB R 50 50000000.000000 -49.528411 110.869328 -0.026318 -4.180881 -0.025870 -4.223772 -67.754661 -176.153454...
  • Page 95 Performance Verification 203943935.074433 -53.374619 45.618787 -0.044122 -16.994561 -0.041601 -17.016611 -52.209576 52.395133 208698659.780268 -52.713418 43.564007 -0.047367 -17.384868 -0.043113 -17.406702 -51.910498 55.677837 213564235.573780 -53.477228 35.859633 -0.049667 -17.770211 -0.046242 -17.803783 -51.477695 53.799018 218543246.824077 -55.032566 26.702114 -0.051641 -18.159282 -0.050036 -18.209336 -51.013276 49.886314 223638338.151939 -53.869091 26.218432 -0.052370 -18.572260 -0.051093 -18.629032 -51.239963 47.730420 228852215.834522 -51.902344 30.275653 -0.052588 -19.000945 -0.051017 -19.060434 -51.778596 46.370604 234187649.242808 -51.933827 29.735652 -0.051672 -19.458329 -0.050622 -19.511235 -52.618817 43.686630 239647472.312564 -52.501771 27.821456 -0.050415 -19.931623 -0.050130 -19.975167 -53.656204 40.914797...
  • Page 96 Performance Verification 1230841971.380104 -36.368154 -66.008920 -0.139317 -102.172138 -0.135905 -102.176340 -45.350402 -159.255608 1259537675.070255 -36.484368 -70.298488 -0.140443 -104.535698 -0.138102 -104.561407 -45.199506 -167.298406 1288902386.991699 -36.100137 -71.663451 -0.143996 -106.965470 -0.140718 -106.990081 -44.237343 -167.377205 1318951704.322966 -35.647399 -70.676147 -0.143407 -109.444778 -0.141530 -109.473265 -44.479826 -166.526112 1349701587.873357 -35.473004 -76.169267 -0.144837 -111.996785 -0.140095 -112.024550 -44.898263 -168.705245 1381168370.560588 -35.397257 -76.199011 -0.151281 -114.619927 -0.143939 -114.641006 -44.459548 -179.894988 1413368766.086080 -34.861640 -79.603023 -0.149326 -117.283372 -0.147051 -117.307324 -44.548533 166.433716 1446319877.812507 -34.675802 -83.685975 -0.154729 -120.021826 -0.148112 -120.068082 -43.870957 156.340597...
  • Page 97 Performance Verification 7428374655.799140 -27.017620 -164.842451 -0.348642 104.090333 -0.350091 104.061237 -28.919257 -172.662528 7601558901.200872 -28.551834 174.443449 -0.347845 89.718285 -0.349058 89.706641 -31.030126 -178.119157 7778780743.552826 -29.482132 148.355026 -0.349523 75.016467 -0.358008 74.972608 -32.590336 -177.895400 7960134314.911269 -30.871044 118.843742 -0.356179 59.960289 -0.356072 59.945644 -33.687188 -170.658171 8145715941.916058 -31.950742 79.399064 -0.362965 44.538332 -0.361544 44.536516 -33.634250 -156.266570 8335624196.954902 -31.102992 41.941266 -0.368766 28.807538 -0.367519 28.749027 -31.418216 -149.846807 8529959950.520464 -29.506952 12.987833 -0.380587 12.700933 -0.371898 12.632583 -29.617847 -154.917241 8728826424.788105 -28.037976 -11.924768 -0.387358 -3.772489 -0.377158 -3.828796 -28.033121 -165.368743...
  • Page 98 N OT E Copying this data from the PRC is the simplest most reliable method to get the data. To download the PRC, visit http://www.keysight.com/find/PRC. ! freq S11 S21 S12 S22 !Port 1=female side of 5062_1247 adaptor, Port 2=male side of N5477A # Hz S DB R 50 50000000.000000 -41.543761 18.199382 -0.015231 -10.158056 -0.028545 -10.064176 -41.019132 74.184681...
  • Page 99 Performance Verification 203943935.074433 -43.103278 -8.572691 -0.046521 -40.231587 -0.047866 -40.222535 -43.632839 9.181011 208698659.780268 -43.121602 -9.391791 -0.046759 -41.164509 -0.047999 -41.151288 -43.606664 7.735754 213564235.573780 -43.140393 -10.229988 -0.047002 -42.119181 -0.048134 -42.101693 -43.579961 6.256803 218543246.824077 -43.159664 -11.087726 -0.047251 -43.096110 -0.048273 -43.074256 -43.552719 4.743372 223638338.151939 -43.179428 -11.965461 -0.047506 -44.095815 -0.048415 -44.069494 -43.524931 3.194656 228852215.834522 -43.199700 -12.863660 -0.047767 -45.118827 -0.048560 -45.087934 -43.496586 1.609835 234187649.242808 -43.220494 -13.782799 -0.048034 -46.165690 -0.048709 -46.130118 -43.467676 -0.011936 239647472.312564 -43.241824 -14.723367 -0.048307 -47.236959 -0.048861 -47.196599 -43.438192 -1.671516...
  • Page 100 Performance Verification 1230841971.380104 -35.060434 16.855880 -0.111443 118.568821 -0.107905 118.585920 -33.475859 -0.272518 1259537675.070255 -34.828362 11.895752 -0.113822 112.954191 -0.109121 112.956285 -33.427845 -6.326649 1288902386.991699 -34.637028 5.991891 -0.112972 107.197490 -0.107321 107.209433 -33.232324 -13.441007 1318951704.322966 -34.516264 0.996999 -0.114511 101.309989 -0.109374 101.325896 -33.276860 -19.968521 1349701587.873357 -34.436482 -3.487187 -0.117529 95.287270 -0.113811 95.303572 -33.470614 -26.197174 1381168370.560588 -34.493597 -8.679569 -0.118776 89.117643 -0.113622 89.133122 -33.410081 -33.333905 1413368766.086080 -34.595375 -13.840873 -0.118970 82.803992 -0.114498 82.824258 -33.473961 -39.824003 1446319877.812507 -34.761786 -18.894689 -0.117636 76.342969 -0.117004 76.376265 -33.729027 -45.282698...
  • Page 101 Performance Verification 7428374655.799140 -37.293649 14.340553 -0.263882 -14.759133 -0.258908 -14.695756 -32.761639 143.058679 7601558901.200872 -36.907940 3.855324 -0.267100 -48.660334 -0.266499 -48.613209 -33.766269 86.068082 7778780743.552826 -35.828061 -13.657090 -0.271380 -83.387048 -0.266894 -83.289164 -33.270815 21.805711 7960134314.911269 -33.493068 -37.569054 -0.271134 -118.872118 -0.273741 -118.805162 -31.780351 -32.970164 8145715941.916058 -32.118290 -70.028402 -0.275567 -155.198803 -0.273571 -155.161065 -30.962180 -79.289275 8335624196.954902 -31.894002 -107.235305 -0.277590 167.618358 -0.275756 167.679923 -31.479945 -118.300978 8529959950.520464 -32.709673 -149.757670 -0.279359 129.577007 -0.279958 129.627666 -33.271908 -152.082983 8728826424.788105 -34.055029 170.816461 -0.278450 90.627878 -0.278118 90.672620 -35.491196 -170.796459...

  • Page 102: Dc Input Resistance Performance Verification

    Performance Verification DC Input Resistance Performance Verification Keysight recommends a test interval of one year or 2000 hours of operation. Table 12 Required Equipment Type Requirement Performance Verification Fixture Keysight N5443A (no substitute) BNC(m) to SMA(m) Adapter Pomona 4288 or equivalent...
  • Page 103 Performance Verification Measuring Input Resistance for ZIF Probe Heads or Solder-in Probe Heads Connect the BNC to SMA adapter and BNC to Banana Plug adapters as shown in Figure Position the PV fixture on a table top and clamp it with a small bench vise to steady it. Ensure that the PV fixture is flush with the table top so that when the banana plugs are probed, it does not rock the PV fixture.
  • Page 104 Performance Verification Measuring Input Resistance for the Browser Probe Head The following image shows the correct setup for measuring the differential input resistance of the N5445A Browser probe head (Figure 72). Figure 72 Setup for Measuring Input Resistance for Browser Probe Head Set the browser for a fairly wide span (span does not impact this DC measurement).

  • Page 105: Performance Test Record

    Performance Verification Performance Test Record The recommended test interval is 1 Year/2000 hours. N OT E Keysight Technologies Keysight InfiniiMax III Series Probe Model Number: Tested by: Serial Number: Work Order Number: Recommended next test date: Date: Probe Head Test Limits...
  • Page 106 Performance Verification InfiniiMax III Series Probes User’s Guide...
  • Page 107 • Measurement data used for these plots and for determining probe correction were made using Keysight vector network analyzers swept to 40GHz and calibrated with NIST traceable calibration standards.
  • Page 108 Performance Plots • Two time responses are shown: • “Time Response to an Ideal Step at Probe Tip” This is the classical “step response” which is defined as the time response to an ideal, zero rise-time step present at the probe tip.

  • Page 109: Performance Plots

    Performance Plots MX0109A and N2836A 26 GHz Solder-In Probe Heads (with N2803A) InfiniiMax III Series Probes User’s Guide...
  • Page 110 Performance Plots InfiniiMax III Series Probes User’s Guide...
  • Page 111 Performance Plots InfiniiMax III Series Probes User’s Guide...

  • Page 112: N2838A/N5439A 25 Ghz Pcb Zif Tip/Head (With N2803A)

    Performance Plots N2838A/N5439A 25 GHz PCB ZIF Tip/Head (with N2803A) InfiniiMax III Series Probes User’s Guide...
  • Page 113 Performance Plots InfiniiMax III Series Probes User’s Guide...
  • Page 114 Performance Plots InfiniiMax III Series Probes User’s Guide...

  • Page 115: N5440A/N5439A 28 Ghz Ceramic Zif Tip/Head (With N2803A)

    Performance Plots N5440A/N5439A 28 GHz Ceramic ZIF Tip/Head (with N2803A) InfiniiMax III Series Probes User’s Guide...
  • Page 116 Performance Plots InfiniiMax III Series Probes User’s Guide...
  • Page 117 Performance Plots InfiniiMax III Series Probes User’s Guide...

  • Page 118: N5447A/N5439A 28 Ghz Ceramic High-Sensitivity Zif Tip/Head (With N2803A)

    Performance Plots N5447A/N5439A 28 GHz Ceramic High-Sensitivity ZIF Tip/Head (with N2803A) InfiniiMax III Series Probes User’s Guide...
  • Page 119 Performance Plots InfiniiMax III Series Probes User’s Guide...
  • Page 120 Performance Plots InfiniiMax III Series Probes User’s Guide...

  • Page 121: N5441A 16 Ghz Solder-In Head (With N2803A)

    Performance Plots N5441A 16 GHz Solder-In Head (with N2803A) InfiniiMax III Series Probes User’s Guide...
  • Page 122 Performance Plots InfiniiMax III Series Probes User’s Guide...
  • Page 123 Performance Plots InfiniiMax III Series Probes User’s Guide...

  • Page 124: N5444A 30 Ghz Sma 2.92 Mm Head (With N2803A)

    Performance Plots N5444A 30 GHz SMA 2.92 mm Head (with N2803A) InfiniiMax III Series Probes User’s Guide...
  • Page 125 Performance Plots InfiniiMax III Series Probes User’s Guide...
  • Page 126 Performance Plots InfiniiMax III Series Probes User’s Guide...

  • Page 127: N5445A 30 Ghz Browser Head, 1 Mm Span (With N2803A)

    Performance Plots N5445A 30 GHz Browser Head, 1 mm span (with N2803A) InfiniiMax III Series Probes User’s Guide...
  • Page 128 Performance Plots InfiniiMax III Series Probes User’s Guide...
  • Page 129 Performance Plots InfiniiMax III Series Probes User’s Guide...

  • Page 130: N5445A 30 Ghz Browser Head, 2 Mm Span (With N2803A)

    Performance Plots N5445A 30 GHz Browser Head, 2 mm span (with N2803A) For browser spans of 2 and 3mm, the biggest effect is in the frequency and time responses. The input N OT E loading is nearly the same as for the 1mm span except that the impedance minimum at ~22 GHz is slightly higher.
  • Page 131 Performance Plots InfiniiMax III Series Probes User’s Guide...
  • Page 132 Performance Plots InfiniiMax III Series Probes User’s Guide...

  • Page 133: N5445A 30 Ghz Browser Head, 3 Mm Span (With N2803A)

    Performance Plots N5445A 30 GHz Browser Head, 3 mm span (with N2803A) For browser spans of 2 and 3mm, the biggest effect is in the frequency and time responses. The input N OT E loading is nearly the same as for the 1mm span except that the impedance minimum at ~22 GHz is slightly higher.
  • Page 134 Performance Plots InfiniiMax III Series Probes User’s Guide...

  • Page 135: Spice Models

    Keysight InfiniiMax III Series Probes User’s Guide 8 SPICE Models SPICE Models for N5440/1/4/5/7A Probe Heads SPICE Models for N2838A, MX0109A, and N2836A Probe Heads Simplified InfiniiMax III Schematic The SPICE models in this chapter are for the input impedances of the various Infiniimax III probes heads.

  • Page 136: Spice Models For N5440/1/4/5/7A Probe Heads

    SPICE Models SPICE Models for N5440/1/4/5/7A Probe Heads The SPICE models in this section are for the input impedances of the various InfiniiMax III probes. Generic SPICE sub-circuit files are listed so they can be copied and pasted into user’s SPICE simulations. Chapter 7, “Performance Plots”...
  • Page 137 SPICE Models Figure 73 SPICE circuit for N5440A, N5447A, N5441A, N5445A, and N5444A probe heads InfiniiMax III Series Probes User’s Guide...
  • Page 138 SPICE Models N5440A Ceramic ZIF Tip, N5439A ZIF Probe Head For matching between the modeled and measured input impedances, refer to “N5440A/N5439A 28 GHz Ceramic ZIF Tip/Head (with N2803A)" on page 115. .subckt N5440A_N5439A_450ohmZIF 1 2 c1 1 10 20f l1 10 11 1.5n r1 11 2 180 rp1 1 3 180...
  • Page 139 SPICE Models N5441A Solder-In Probe Head For matching between the modeled and measured input impedances, refer to “N5441A 16 GHz Solder-In Head (with N2803A)" on page 121. .subckt N5441A_SldrIn 1 2 c1 1 10 50f l1 10 11 2.1n r1 11 2 65 rp1 1 3 65 lp1 3 4 2.5n cp1 4 5 55f...
  • Page 140 SPICE Models N5445A Browser Probe Head (2 mm span) For matching between the modeled and measured input impedances, refer to “N5445A 30 GHz Browser Head, 2 mm span (with N2803A)" on page 130. .subckt N5445A_Brwsr2mmSpn 1 2 c1 1 10 20f l1 10 11 2.3n r1 11 2 250 rp1 1 3 250...
  • Page 141 SPICE Models N5444A SMA Probe Head The N5444A 2.92 mm/3.5 mm/SMA probe head is modeled by 40 short transmission lines of varying impedance. This accurately models the temporal nature of this probe head. The sub-circuit text is: For matching between the modeled and measured input impedances, refer to “N5444A 30 GHz SMA 2.92 mm Head (with N2803A)"...

  • Page 142: Spice Models For N2838A, Mx0109A, And N2836A Probe Heads

    SPICE Models SPICE Models for N2838A, MX0109A, and N2836A Probe Heads These are SPICE models for the input impedances of the various InfiniiMax III probes. Generic SPICE sub-circuit files are listed so they can be copied and pasted into user’s SPICE simulations.
  • Page 143 SPICE Models You’ll find the following SPICE data on the documentation CD that was shipped with your probe. N OT E Copying this data from the CD is the simplest most reliable method to get the data. N2838A PC Board ZIF Tip, N5439A ZIF Probe Head For matching between the modeled and measured input impedances, refer to “N2838A/N5439A 25 GHz PCB ZIF Tip/Head (with N2803A)"...
  • Page 144 SPICE Models MX0109A and N2836A Solder-In Probe Heads For matching between the modeled and measured input impedances, refer to “MX0109A and N2836A 26 GHz Solder-In Probe Heads (with N2803A)" on page 109. .subckt N2836A_SldrIn 1 2 Cblkp 6 13 100n Cblkn 2 14 100n Cg1p 1 4 20.7f Cg1n 5 6 20.7f...

  • Page 145: Simplified Infiniimax Iii Schematic

    SPICE Models Simplified InfiniiMax III Schematic Do not use this simplified schematic as a SPICE model. N OT E Figure 75 InfiniiMax III Simplified Schematic InfiniiMax III Series Probes User’s Guide...
  • Page 146 SPICE Models InfiniiMax III Series Probes User’s Guide...
  • Page 147 Index Symbols ±4V input connector, ground socket, oscilloscope, oscilloscope channel, Numerics 1143A power supply, InfiniiMode, 86100D DCA-X sampling isolation, performance oscilloscope, plots, test record, verification, LED, probe accessories headlights, connecting, static-safe, Light button, probe head dimensions, AutoProbe III, low temperature hot glue, Proper Handling Techniques, AutoProbe III interface, putty,...
  • Page 148 Index InfiniiMax III Series Probes User’s Guide...

This manual is also suitable for:

Infiniimax iii n2800aInfiniimax iii n2801aInfiniimax iii n2802aInfiniimax iii n2803aInfiniimax iii n2838aInfiniimax iii n5444a ... Show all

Table of Contents