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Agilent Technologies 1168/9A, User Manual

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Agilent Technologies 1168/9A User Manual Download Page 31

Getting Started

1

Using Offset With InfiniiMax Active Probes

1168/9A Probe’s User’s Guide

31

Using Offset With InfiniiMax Active Probes

It is important to understand how the 113xA probes behave 
with respect to offset when different probe head / signal 
combinations are used. 

The purpose of offset in active probes or oscilloscope front 
ends is to allow the subtraction of most or all of the dc 
component of the input signal so the signal can better utilize 
the dynamic range of the input. When using an InfiniiMax 
probe with an Infiniium oscilloscope, you can select the case 
(see the three cases described below) that applies for your 
measurement by selecting the 

Probes

 button under the 

channel setup menu. This allows you to select which type of 
probe head is being used and, if it is a differential probe 
head, allows you to select whether you are probing a 
differential or single- ended signal. With these inputs, the 
oscilloscope will use the proper type of offset for your 
measurement case. The specifics for each case are discussed 
below.

When adjusting the offset for a particular probe head, make 
sure to have a triggered signal.

Case 1. A single-ended

probe head probing a

single-ended signal

For this case, the offset control on the oscilloscope controls 
the probe offset and the channel offset is set to zero. This 
allows the offset voltage to be subtracted from the input 
signal before the signal gets to the differential amplifier. 
Since this subtraction is done before any active circuits, the 
offset range is large (±16V). Note that the minus probe tip is 
not present when using a single- ended probe head which 
means nothing is plugged into the "–" input of the probe 
amp. This is normal and causes no problems.

Case 2. A differential probe

head probing a single-ended

signal

For this case, the offset control on the oscilloscope controls 
the probe offset and the channel offset is set to zero. This 
allows the offset voltage to be subtracted from the input 

Summary of Contents for 1168/9A

Page 1: ...Agilent Technologies Agilent 1168 9A Differential and Single Ended Probes User s Guide ...

Page 2: ...r contract clause Use duplication or disclo sure of Software is subject to Agilent Tech nologies standard commercial license terms and non DOD Departments and Agencies of the U S Government will receive no greater than Restricted Rights as defined in FAR 52 227 19 c 1 2 June 1987 U S Government users will receive no greater than Limited Rights as defined in FAR 52 227 14 June 1987 or DFAR 252 227 ...

Page 3: ...echnologies 33 Safety Information 34 Service 37 2 Using Probe Heads Recommended Configurations 42 Soldering a ZIF Tip to a DUT 79 Using N2884A Fine Wire ZIF tips 84 N2887A 8A Soft Touch Probe Heads 95 3 Maintaining Probe Heads N5381 2A Probe Heads 106 N5451A Long Wired ZIF Tips 111 E2677A 9A Solder In Probe Heads 115 4 Calibrating Probes DC Gain and Offset Calibration 122 Calibration for Solder In...

Page 4: ...ifferential Solder in Probe Head High BW 187 E2678A Differential Socketed Probe Head High BW 190 E2678A Differential Socketed Probe Head w Damped Wire 193 E2679A Single Ended Solder In Probe Head High BW 196 E2695A SMA Probe Head 198 N2887A N2888A Soft Touch Probe Heads 199 7 Performance Verification To Test Bandwidth 204 To Test Input Resistance 215 Performance Test Record 220 8 SPICE Models N538...

Page 5: ...Contents 1168 9A Probes User s Guide 5 N5381A and N5382A Probe Heads 248 Other Accessories 249 ...

Page 6: ...6 1168 9A Probes User s Guide Contents ...

Page 7: ...probe differential and single ended signals The probes provide a large common mode range for measuring differential signals and a large offset range for measuring single ended signals These probes are used at extreme frequencies where off board lead resistors cause undesirable response variation As a result the 1168A and 1169A probes were designed using resistor at the tip technology where resisto...

Page 8: ...ertion Force ZIF probe head that uses a ZIF tip that can be installed at many locations on your DUT The ZIF tip s small size is critical in probing tight locations and the ZIF feature allows connection without compressing the delicate wires which cannot support this compression You can also use the probe amplifiers with the InfiniiMax I probe heads with some limitations The differential probe head...

Page 9: ...Getting Started 1 Introduction 1168 9A Probe s User s Guide 9 Figure 2 Available Probe Heads ...

Page 10: ...Rings When multiple probes are connected to the oscilloscope use the channel identification rings to associate the channel inputs with each probe Place one colored ring near the probe s channel connector and place an identical color ring near the probe head Is Your Oscilloscope Software Up to Date Agilent periodically releases software updates to support your probe fix known defects and incorporat...

Page 11: ...amaged notify your Agilent 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 Agilent Technologies Sales Office If the shipping container is damaged or the cushioning materials show signs of stress notify the carrier as well as your Agilent Technologies Sales Office Keep the shipping ma...

Page 12: ...e 3 shows the accessories that are shipped with the 1168 9A probe amplifiers The probe amplifiers do not come with a probe head unless selected at the time of order Any head shown in Figure 2 on page 9 can be ordered at any time for the probes Figure 3 Accessories Supplied With the Probe Amplifier ...

Page 13: ...ivity kit described on page 15 conveniently packages multiple InfiniiMax I probe heads and their accessories N5380B SMA Probe Head There are no accessories supplied with this probe head N5381A Differential Solder In Probe Head Table 2 Supplied Accessories Description Qty Supplied Part Identification a a Allows you to identify the accessory container in the probe case Not orderable 0 007tin plated ...

Page 14: ...owser Probe Head N5425A ZIF Probe Head and N5426A ZIF Tip There are no accessories supplied with the N5425A or N5426A Table 3 Supplied Accessories Description Qty Supplied Part Identification a a Allows you to identify the accessory container in the probe case Not orderable 0 005 steel wire and trim gauge 1 01169 21304 ...

Page 15: ...ime as 1168 9A probe amplifiers Figure 4 E2669A Differential Connectivity Kit not to scale Table 4 Supplied Kit Accessories for the E2678A Probe Heads Description Qty Supplied Part Identification a 160Ω damped wire accessory 12 01130 21302 82Ω resistor for full bandwidth 96 01130 81506 Socket for 25 mil 25 1000 inch square pins female on both ends 8 01131 85201 25 mil female socket w 20 mil round ...

Page 16: ...3 150Ω resistor for medium bandwidth 40 0700 2350 91Ω resistor template 1 01131 94311 150Ω resistor template 1 01131 94308 a Allows you to identify the accessory container in the probe case Not orderable Table 6 Supplied Kit Accessories for the E2675A Probe Head Description Qty Supplied Part Identification a Resistive tip blue 91Ω 20 01131 62107 Ergonomic handle p n 01131 43201 1 a Allows you to i...

Page 17: ... a specified operating temperature range from 5o C to 40o C but the probe heads can be operated over a much larger range of temperatures Use the extension cables to physically separate the amplifier from the probe head which allows you to operate the probe head inside a temperature chamber while the probe amplifier remains outside the chamber To ensure a high quality measurement the N5450B cable s...

Page 18: ...the probe head legs are not tugged or moved around significantly CAUTION Prevent abrasion and tears in the cable s jacket do not rest the extension cables on any metal objects or objects with sharp edges CAUTION Do not kink the cables The cables are designed to be flexible but are not designed to be bent sharply Table 7 Probing Temperature Ranges Probe Head Configurationa Temperature Range oC Aver...

Page 19: ...ugh extreme temperature ranges has a marked affect on their lifetimes as listed in Table 7 Only the lifetime of the probe head is affected by temperature cycling The extension cables and probe amplifier should not need to be replaced with extended temperature cycling NOTE Discoloration or texture changes are possible with the extension cables These changes do not however affect the performance or ...

Page 20: ...r by the last letter one attenuator in the matched pair will be labeled A and the other will be labeled B Additionally these attenuators enable you to increase the offset range of the probe as described in Table 8 on page 21 When using the N2880A In Line Attenuators the bandwidth and rise time of your probing system is not affected There is however a trade off in noise refer to Table 8 and in the ...

Page 21: ... attenuators and the probe with the 20 dB attenuators Table 8 N2880A With 1168A 9A Probe Amplifiers Added Attenuator Dynamic Range Offset Range Typical Noise Referred to Maximum Allowed Input Slew Ratea se single ended diff differential Nominal DC Attenuation of Probe System None 3 3 Vp p 16V 2 2 mV RMS se 25 V ns diff 40 V ns 3 45 1 6 dB 2 1 6 6 Vp p 30 Vb 6 3 mV RMS se 50 V ns diff 80 V ns 6 9 1...

Page 22: ...B Vout Vin 20 dB attenuator 10 8 dB of probe Figure 5 Frequency Response The software in the Infiniium oscilloscopes will detect a probe when it is connected and by default will assume that no additional attenuators are installed If you want to scale readings and settings on the oscilloscope so they are correct with the attenuators installed refer to the procedures below for your specific oscillos...

Page 23: ...oscilloscope menu Press the Configure Probing System button A pop up window will appear where you can select External Scaling Click the Decibel radio button under the External Scaling section and then set the Gain field to either 6 dB 12 dB or 20 dB depending on the attenuator you are using be sure to include the negative sign Finally you will need to manually set the Offset field in this dialog b...

Page 24: ...the N2880A In Line Attenuators The order of the two products in the probing system that is which one is closest to the probe amplifier does not matter Figure 7 shows the frequency response plot of the blocking capacitors no probe included Figure 7 DC Blocking Cap Insertion Loss S21 versus Frequency DC Blocking Cap only ...

Page 25: ...es service professionals Exercise care to prevent the probe end from receiving mechanical shock Store the probe in a shock resistant case such as the foam lined shipping case which came with the probe Connecting and Disconnecting Probe Heads When disconnecting a probe head from an amplifier pull the probe head connectors straight out of the sockets as shown in Figure 8 When connecting a probe head...

Page 26: ...the probe s cable CAUTION When the probe is attached to an oscilloscope avoid letting object hit the probe cable where the cable exits the probe amplifier and bend it well beyond its limit When storing the probe coil the cable in a large loops and avoid twisting the cable Coil the cable in a similar manner to how garden hoses or extension cords are typically coiled You can start by wrapping the ca...

Page 27: ...g Handling the Probe Amplifier The probe amplifier contains a delicate circuit board Treat it carefully and take standard precautions for example not dropping it repeatedly or from large heights not getting it wet not smashing it with heavy objects etc These probes are sensitive ESD devices so standard precautions need to be used to not ruin the probe from the build up of static charges ...

Page 28: ... unlocked Instead gently push it until it is snug To disconnect the probe move and hold the lever at R release and pull the probe from the BNC Figure 11 Properly Connecting a Probe to the Oscilloscope Securing Probe Heads and Amplifiers to Your DUTs When soldering a probe head to a circuit first provide strain relief by using low temperature hot glue use as little as possible or non conductive dou...

Page 29: ...Getting Started 1 Probe Handling 1168 9A Probe s User s Guide 29 Figure 12 Correct Securing Methods Figure 13 Incorrect Securing Method Because Glue is Placed on the Probe Head Tip ...

Page 30: ...elcro Dots The velcro dots can be used to secure the probe amplifier to a circuit board removing the weight of the probe from the circuit connection Attach a Velcro dots to both the probe amplifier and the circuit board as shown in Figure 14 on page 30 Figure 14 Using the Velcro Dots ...

Page 31: ...ingle ended signal With these inputs the oscilloscope will use the proper type of offset for your measurement case The specifics for each case are discussed below When adjusting the offset for a particular probe head make sure to have a triggered signal Case 1 A single ended probe head probing a single ended signal For this case the offset control on the oscilloscope controls the probe offset and ...

Page 32: ...differential probe means there is no sacrificing of offset range Case 3 A differential probe head probing a differential signal For this case the offset control on the oscilloscope controls the oscilloscope channel offset The probe offset is not used and set to zero Since the plus and minus sides of differential signals have the same dc component it will be subtracted out and the ouput of the prob...

Page 33: ...rential Signal Max Single Ended Slew Ratea V ns Max Differential Slew Rateb V ns Driver Min Edge Rate 20 80 ps Max Transmitter Level Diff V PCI Express 3GIO YES 9 6 19 2 50 1 6 RapidIO Serial 3 125Gb YES 8 0 16 0 60 1 6 10GbE XAUI 4x3 125Gb YES 8 0 16 0 60 1 6 1394b YES 8 0 16 0 60 1 6 Fibre Channel 2125 YES 8 0 16 0 75 1 Gigabit Ethernet 1000Base CX YES 7 8 15 5 85 2 2 RapidIO 8 16 2Gb YES 7 2 14...

Page 34: ...roduct in a safe condition Note the external markings on the probe that are described in this document 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 that if you use this probe assembly in a manner not specified the protection this product provides may be impaired WARNING Use Only G...

Page 35: ... not install substitute parts or perform any unauthorized modification to the probe WARNING Do not operate the probe or oscilloscope in the presence of flammable gasses or fumes Operation of any electrical instrument in such an environment constitutes a definite safety hazard WARNING Do not use the probe or oscilloscope in a manner not specified by the manufacturer WARNING Service instructions are...

Page 36: ...ent 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 protective earth contact You must not negate the protective action by using an extension cord power cable without a protective conductor grounding Grounding one conductor of a two conductor outlet is not su...

Page 37: ...calibration will not pass check the following Check that the probe passes a waveform with the correct amplitude If the probe is powered by the oscilloscope check that the offset is approximately correct The probe calibration cannot correct major failures Be sure the oscilloscope passes calibration without the probe Be sure that the probe head that you are using has been in the oscilloscope s Probe...

Page 38: ...is the case the probe head is no longer useful A new probe head will need to be obtained either through purchase or warranty return Incorrect Offset Assuming the probe head in use is properly functioning incorrect offset may be caused by defect or damage to the probe amplifier or by lack of probe calibration with the oscilloscope Returning the Probe for Service If the probe is found to be defectiv...

Page 39: ... if not available use bubble wrap or packing peanuts 5 Place securely in sealed shipping container and mark container as FRAGILE NOTE If any correspondence is required refer to the product by serial number and model number Contacting Agilent Technologies For technical assistance contact your local Agilent Call Center In the Americas call 1 800 829 4444 In other regions visit http www agilent com f...

Page 40: ...40 1168 9A Probe s User s Guide 1 Getting Started Service ...

Page 41: ... Browser 72 E2678A Differential Socketed Damped Wire Accessory 74 E2695A SMA Head 77 Soldering a ZIF Tip to a DUT 79 Using N2884A Fine Wire ZIF tips 84 N2887A 8A Soft Touch Probe Heads 95 This chapter describes the probe head configurations listed in the order of the best performance to the least performance Always refer to the information in this chapter before using any probe head The recommende...

Page 42: ...ndwidth 1168A 10 1169A 12 0 21 0 35 Differential and Single ended signals Hand held browsing Probe holders General purpose troubleshooting Ergonomic handle available N5380B SMA Refer to page 52 Full Bandwidth 1168A 10 1169A 12 N A N A Full bandwidth Preserve oscilloscope channels as opposed to using the A minus B mode Removes inherent cable loss through compensation Common mode termination voltage...

Page 43: ...ZIF Tip 7 mm resistor length Refer to page 59 9 9 0 span c 4 4 60 span d 0 6 0 58 Differential and Single ended signals Solder in with LW ZIF Tip connection Variable pitch targets including larger pitches Higher loading than solder in probe head N5425A ZIF with N5451A Long Wired ZIF Tip 11 mm resistor length Refer to page 61 5 0 span c 3 3 60 span d 0 68 0 68 Differential and Single ended signals ...

Page 44: ...56 Differential and Single ended signals Removable connection using solder in resistor pins Hard to reach targets E2675A Differential Browser Refer to page 67 5 2 0 32 0 57 Differential and Single ended signals Hand held browsing Probe holders General purpose troubleshooting Ergonomic handle available E2679A Single Ended Solder In high bandwidth resistors Refer to page 70 5 2 N A 0 50 Single ended...

Page 45: ...sockets E2695A SMA Refer to page 77 8 N A N A Not full bandwidth but good signal fidelity Preserve oscilloscope channels as opposed to using the A minus B mode Removes inherent cable loss through compensation Common mode termination voltage can be applied Offset sma cables adapt to variable spacing a Capacitance seen by differential signals b Capacitance seen by single ended signals Table 11 Infin...

Page 46: ...vides the full bandwidth signals and the lowest capacitive loading for measuring both single ended and differential signals It utilizes strong 7 mil or optional 5 mil diameter nickel wires which allow connection to very small fine pitch targets Figure 15 N5381A Table 12 Supplied Accessories Accessory Quantity Part Number 0 007 inch tin plated nickel wire 1 01169 81301 0 005 inch tin plated nickel ...

Page 47: ...ws how to adjust the spacing of the head s wires without stressing the solder joint Use tweezers to grab and stabilize the lead near the pc board edge Then without moving the tweezers position the wires as needed Stabilizing the wire near the solder joint reduces stress at the solder joint The wires will last much longer with multiple adjustments Figure 16 Adjusting Spacing Without Stressing Solde...

Page 48: ...mended Configurations NOTE Strain relieve the micro coax leading away from the solder in tips using hook and loop fasteners or adhesive tape to protect delicate connections PERFORMANCE PLOTS Refer to N5381A N5382A Differential Probe Heads Full BW on page 156 ...

Page 49: ...vides the same full bandwidth performance and fidelity as the solder in probe head for measuring differential and single ended signals The tip wires for this probe head are tin plated spring steel that can be formed to different spacing and provide compliance for a reliable connection The N5382A comes with an ergonomic handle to aid in positioning the probe head Figure 17 N5382A Table 13 Supplied ...

Page 50: ...dge Then without moving the tweezers position the wires as needed Stabilizing the wire near the solder joint reduces stress at the solder joint The wires will last much longer with multiple adjustments Although Figure 18 shows the N5381A probe head the technique used is the same Figure 18 Adjusting Spacing Without Stressing Solder Joint When holding the N5382A for extended periods of time use the ...

Page 51: ...ended Configurations 1168 9A Probes User s Guide 51 Figure 19 Inserting the Probe into the Handle Figure 20 Removing the Probe from the Handle PERFORMANCE PLOTS Refer to N5381A N5382A Differential Probe Heads Full BW on page 156 ...

Page 52: ...ge other than ground the shorting cap can be removed and a dc voltage can be applied When disconnecting a probe amplifier from the N5380B SMA probe head grasp the probe amplifier as shown in Figure 21 and pull it straight away from the SMA probe head without any rocking either side to side or up and down Figure 21 Disconnecting the N5380B CAUTION Pulling on the probe amplifier cable or strain reli...

Page 53: ...Heads 2 Recommended Configurations 1168 9A Probes User s Guide 53 If you are using an N5380A the probe amplifier can become damaged unless you use the Agilent N5380 64701 SMA Head Support Figure 22 N5380B Schematic ...

Page 54: ... in N5425A with N5451A Long Wire ZIF Tip 7 mm on page 59 and N5425A with N5451A Long Wire ZIF Tip 11 mm on page 61 The ZIF tip must be soldered to the circuit that you are measuring To attach the ZIF probe head into the ZIF tip open lift up the tip s black latch insert the probe head into the tip and close the latch To solder a ZIF tip to your DUT refer to Soldering a ZIF Tip to a DUT on page 79 F...

Page 55: ...Using Probe Heads 2 Recommended Configurations 1168 9A Probes User s Guide 55 PERFORMANCE PLOTS Refer to N5425A ZIF Probe Head Full BW on page 161 ...

Page 56: ... difficult to see use a high powered microscope when working with these tips Please also note that it is important to handle these fine wire ZIF tips carefully as the thin wires can be easily damaged To attach the ZIF probe head into the ZIF tip open lift up the tip s black latch insert the probe head into the tip and close the latch NOTE To learn the proper method of using the N2884A tip refer to...

Page 57: ...e 161 The only major difference is that the bandwidth for the N2884A with the 1169A probe amplifier is slightly less than for the N5425A 12 GHz versus 12 3 GHz Use the SPICE model for the N5425A to model the input loading for the N2884A The N2884A kit comes with five fine wire ZIF tips and one positioner arm with thumb nut to mount the probe head to a micropositioner Figure 25 N2884A Kit with Tine...

Page 58: ...rovide space for these wires when the case is closed However if the tips are not pointing directly up they may miss these cutouts and become damaged CAUTION When the Fine Wire ZIF tip is positioned under a microscope be very careful with the lenses of the microscope as you adjust the magnification or focus If one of the lenses strikes the tip it could permanently damage it CAUTION The two wires ca...

Page 59: ...IF Tip on page 54 The tip must be soldered to the circuit you are measuring This probe head s leads use two 91W resistors To attach the ZIF probe head into the ZIF tip open lift up the tip s black latch insert the probe head into the tip and close the latch Figure 26 N5451A ZIF Tip Trimmed to 7 mm NOTE The N5425A ZIF probe head does not come with any ZIF probe tips ZIF probe tips N5426A N5451A or ...

Page 60: ...Packaging Strip The N5451A long wire ZIF tip kit contains ten ZIF tips connected together in a strip Before a ZIF tip can be used it must be separated from its strip To accomplish this grab one of the tips with flat nose tweezers and bend it back Then bend the tip in the opposite direction and it should break off Figure 27 Breaking Off a Tip Table 14 Supplied Accessories Accessory Quantity Part Nu...

Page 61: ...N5425A with N5451A Long Wire ZIF Tip 7 mm on page 59 For very small fine pitch targets use the N5426A tip as described in N5425A with N5426A ZIF Tip on page 54 To attach the ZIF probe head into the ZIF tip open lift up the tip s black latch insert the probe head into the tip and close the latch Figure 28 N5451A ZIF Tip Trimmed to 11 mm NOTE The N5425A ZIF probe head does not come with any ZIF prob...

Page 62: ...with N5451A Long Wired ZIF Tip on page 165 Removing ZIF Tips from the Packaging Strip The N5451A long wire ZIF tip kit contains ten ZIF tips connected together in a strip Before a ZIF tip can be used it must be separated from its strip To accomplish this grab one of the tips with flat nose tweezers and bend it back Then bend the tip in the opposite direction and it should break off Figure 29 Break...

Page 63: ... soldered connection into a system for a reliable hands free connection At the tip it uses a miniature axial lead resistor with 8 mil diameter leads which allows connection to very small fine pitch targets Figure 30 E2677A The probe head resistors must be soldered to the circuit that you are measuring Because of the small size of the resistor leads it is easy to solder them to very small geometry ...

Page 64: ...lder is right next to the resistor body on the lead the resistor may come apart internally CAUTION When soldering leads to DUT always use plenty of flux The flux will ensure a good strong solder joint without having to use an excessive amount of solder CAUTION Strain relieve the micro coax leading away from the solder in tips using hook and loop fasteners or adhesive tape to protect delicate conne...

Page 65: ... probing differential and single ended signals The 82Ω axial lead resistors are soldered to the circuit that you are measuring The socketed differential probe head is plugged onto the resistors This makes it easier to move the probe from one location to another Because of the larger size of the resistor leads the target for soldering must be larger than the solder in probe heads Figure 31 E2678A T...

Page 66: ...is recommended If soldering a resistor lead to a surface pad on your PC board the resistor leads can be bent in an L shape and soldered down A pad size of at least 0 030 x 0 030 inch 0 762 mm x 0 762 mm is recommended Shaping the Resistors Before installing the 82W resistors 01130 81506 onto your device under test the resistor wires must be trimmed using diagonal cutters and bent to the correct di...

Page 67: ... the probe tips to be adjusted for different circuit geometries The E2675A comes with an optional ergonomic handle to aid in positioning the probe head Figure 33 Differential Browser Do not use the E2675A probe head as a tool to scrape solder mask or other items off of a circuit board The blue tips can easily be broken off if the browser is not used properly Always hold the probe head so that the ...

Page 68: ...cal Orientation of the Blue Tips PERFORMANCE PLOTS Refer to E2675A Differential Browser on page 181 When holding the E2675A for extended periods of time use the supplied ergonomic handle Figure 35 and Figure 36 show how to attach and remove the handle from the probe head Figure 35 Inserting the Probe ...

Page 69: ...Using Probe Heads 2 Recommended Configurations 1168 9A Probes User s Guide 69 Figure 36 Removing the Probe ...

Page 70: ...ery small The probe head resistors must be soldered to the circuit that you are measuring Because of the small size of the resistor leads it is easy to solder them to very small geometry circuits Figure 37 E2679A This probe head s leads use a 91W and 0W mini axial lead resistors TO INSTALL OR REPAIR RESISTOR LEADS Refer to E2677A 9A Solder In Probe Heads on page 115 PERFORMANCE PLOTS Refer to E267...

Page 71: ... and protect the resistor but if a ball of solder is right next to the resistor body on the lead the resistor may come apart internally CAUTION When soldering leads to DUT always use plenty of flux The flux will ensure a good strong solder joint without having to use an excessive amount of solder CAUTION Strain relieve the micro coax leading away from the solder in tips using hook and loop fastene...

Page 72: ...refore limit the bandwidth of the input signal For wider spans with non performance critical browsing rise times greater than approximately 0 5 ns the 5063 2120 socketed ground lead can be used in place of the 01130 60005 ground collar Figure 38 E2676A PERFORMANCE PLOTS Refer to E2676A Single Ended Browser on page 184 When holding the E2675A for extended periods of time use the supplied ergonomic ...

Page 73: ...Using Probe Heads 2 Recommended Configurations 1168 9A Probes User s Guide 73 Figure 39 Inserting the Probe into the Handle Figure 40 Removing the Probe from the Handle ...

Page 74: ...flexibility with good signal fidelity but lower bandwidth for measuring differential or single ended signals The damped wires must be soldered to the circuit that you are measuring This configuration can probe circuit points that are farther apart than other configurations This probe head come with a damped wire accessory that includes two 160W resistors Figure 41 E2678A with Damped Wire Accessory...

Page 75: ...differential probe head except for the input capacitance shown in Table 15 PERFORMANCE PLOTS Refer to E2678A Differential Socketed Probe Head High BW on page 190 Adapting the Damped Wire Accessory from Solder In to Plug On To adapt the damped wire accessory 01130 21302 solder the tip into the 01131 85201 square pin socket and then slip the 01131 41101 heat shrink sleeve over the solder joint and h...

Page 76: ...76 1168 9A Probes User s Guide 2 Using Probe Heads Recommended Configurations Figure 42 01130 63201 Header Adapter Dimensions ...

Page 77: ...ignal fidelity For full bandwidth use the N5380B SMA probe head Refer to N5380B SMA on page 52 Figure 43 E2695A Connected to Probe The E2695A s two outside SMA connectors are for input signal connection and the center SMA connector can be used to provide a dc bias for the termination or to view the common mode signal The signal inputs come with short matched 0 086 in semi rigid SMA cables that are...

Page 78: ...cable loss is compensated Conventional cables used to connect signals to the oscilloscope inputs are not compensated Cable loss can be a very significant contributor to jitter Common mode rejection is better than using channel subtraction in oscilloscope Termination network can be customized to accommodate different standards or needs including supplying a bias voltage to the termination point Avo...

Page 79: ... It may take several tries to get just a little bit of solder right at or near the tip of the soldering iron The solder on the tip keeps the soldering iron tip from pulling solder off the DUT connection points This step may be optional if there is already enough solder on the DUT connection points 4 Position a lead of the ZIF tip on top of one of the target points then briefly touch the soldering ...

Page 80: ...rst two package leads The target could also be via pads or signal traces 1 Add some solder to the target points in the DUT Figure 44 shows extra solder added to the pads for the first two pins on an IC package Figure 44 Solder Added to Target Points 2 Use flux pen to add flux to the target points Also flux the tip of the lead on the ZIF tip at this time Figure 45 Fluxing of the Target Points ...

Page 81: ...handle for the ZIF tip to allow positioning in the DUT Position the lead wires on the target points and then briefly heat the solder joints There should be enough solder to form a good fillet and enough flux to make the joint shinny There shouldn t be so much solder that the big solder ball is formed that could cause a solder bridge or overheat the leads on the ZIF tip Figure 47 ZIF tip Positioned...

Page 82: ...9 ZIF Tip with ZIF Latch Open 6 To make a measurement connect a ZIF probe head to the ZIF tip Open the tip s latch insert the probe head into the ZIF socket and close the tip s latch with a non conductive tool See Figure 50 NOTE You may need to support the body of the ZIF tip while closing the latch Use tweezers or other suitable tool to grab the tip s pc board while the latch is being closed If t...

Page 83: ...Using Probe Heads 2 Soldering a ZIF Tip to a DUT 1168 9A Probes User s Guide 83 Figure 50 Use a Non conductive Tool to Close the Latch ...

Page 84: ...on on the specific oscilloscope channel you plan on using you should calibrate the probe The best and easiest way to calibrate this probe setup is to use the standard N5425A ZIF tips rather than the fine wire ZIF tips since they are very similar in their electrical response characteristics and it is much easier to quickly work with the standard N5425A ZIF tip Step 2 Place the ZIF Probe Head N5425A...

Page 85: ...w wentworthlabs com or you can order it from Agilent If you order it through Agilent you must order both of the following two parts N2884 64702 Wentworth 2026 90409 PVX 400 M Manual Linear Manipulator Magnetic Base Then use flat nose tweezers to slide the ZIF probe head into the recess of the positioner arm Take care to not damage the thin ZIF portion of the probe head Slip the ZIF probe head into...

Page 86: ... it is important that the micropositioner is properly secured It is nose heavy so if the surface it is on does not allow its magentic base to secure it the micropositioner will tip over and damage the ZIF tip Therefore you need to place the micropositioner on a metallic surface and ensure that its metallic base is indeed secured so it will not tip over Step 5 Attach the Probe Head to Probe Amplifi...

Page 87: ...o remove a tip from the packaging grasp the pc board of the tip with flat nose tweezers and lift directly out of the foam See Figure 54 on page 88 CAUTION Do not ever lift the tip out by grasping the wires CAUTION In the case each of the five Fine Wire ZIF tips has its wires pointing directly up There is a cutout in the case s lid that allows for these wires to not be bent when the lid is closed I...

Page 88: ...nother set of tweezers to lift the latch to the open position as shown in Figure 55 on page 88 Be careful to not hit the wires The picture shows the standard ZIF tip and is only meant to highlight the latch s open position the latch is the same on the standard and Fine Wire ZIF tips Figure 55 ZIF Tip Latch in Open Position Fine Wire ZIF tip This is what the latch looks like when it is in the open ...

Page 89: ...specific use scenario There may be other possible ways to use this probe tip The following steps require a probing station and a high powered microscope NOTE Do not turn on your DUT until you have landed both wires and confirmed they are not touching as described below In order to prepare the IC for probing you first need to chemically etch a large trench out of the IC Within the trench create at ...

Page 90: ...ance between wells is 600 microns Figure 57 Example of Trench and Two Wells Under Magnification The two 22 micron wires on the Fine Wire ZIF tip are of different lengths The longer wire will be driven down first to set the z axis and then you will land the short wire It does not matter which wire goes into the ground well and which goes into the target well but it does matter that the longer wire ...

Page 91: ...ls in which you are going to land the short wire In the diagram above you could land the longer wire in well 1 and then probe locations 2 3 and 4 with the short wire You could not however reach well 5 with the short wire the two wires could cross shorting them in the process You also could not reach well 6 with the short wire due to the configurations of the wire this will cause an upward bend in ...

Page 92: ...irection until the tip of the long wire is above its well You may not be able to see the wells and the wires in focus at the same time If this is the case then first focus on the wells and then slowly move the focus out until you can see just the tips of the wires You should then be able to move the longer wire tip over the first well Next slowly land the tip in its well using the z direction adju...

Page 93: ...d the shorter wire into its well Figure 61 Shorter Wire Landed The Fine Wire ZIF tip should now be ready to make a differential measurement Before turning on your DUT you need to ensure that the two wires are not touching You should be able to confirm in the microscope that the tips are not overlapping but these wires do buckle when you land them so they could be touching further up the wires Decr...

Page 94: ...eads Using N2884A Fine Wire ZIF tips Step 9 Configuring the Correct Settings on Your Oscilloscope You should select the N5425A probe head in the probe menu on your oscilloscope when using the Fine Wire ZIF tip You are now ready to acquire a signal ...

Page 95: ...probe amplifiers Each probe head supports both single ended and differential footprints and pin outs You can connect either a single ended channel one connector into the positive input of the probe amplifier or by plugging the differential complements 2 connectors into the appropriate positive and negative inputs of the probe amplifier There exists a 1 1 mapping of Soft touch signal and clock lane...

Page 96: ...d Additional kits can be ordered The Agilent specific probe head retention modules do not match any other vendor s connectors The footprint of the probe heads do match other vendors but the retention modules do not match Figure 63 N2887A Retention Module Dimensions Table 16 Accessories Replacement Parts Part Number Description E5405 68702 Retention Module Replacement kit for N2887A E5396 68702 Ret...

Page 97: ...ting and the environmental conditions should not exceed the probe s specified limits Table 17 N2887A N2888A Characteristics Typical Item Characteristic Bandwidth 3 dB 4 GHz Flatness 5 Single ended Equivalent Loading Capacitance 1 pF Differential Equivalent Loading Capacitance 0 5 pF Single ended Input Impedance 25 kW Differential Input Impedance 50 kW Channel to Channel Coupling 35 dB to 1 7 GHz 2...

Page 98: ...b between pads when traces are routed between the pads on the same layer Solder mask may not encroach onto the pads within the pad dimension shown Via in pad not allowed on these pads Via edges may be tangent to pad edges as long as solder mask web between vias and pads is maintained Permissible surface finishes on pad are HASL immersion silver or gold over nickel Footprint is compatible with rete...

Page 99: ...Using Probe Heads 2 N2887A 8A Soft Touch Probe Heads 1168 9A Probes User s Guide 99 Figure 65 N2887A Footprint Dimensions ...

Page 100: ...n the same layer Solder mask may not encroach onto the pads within the pad dimension shown Via in pad not allowed on these pads Via edges may be tangent to pad edges as long as solder mask web between vias and pads is maintained Permissible surface finishes on pad are HASL immersion silver or gold over nickel Footprint is compatible with retention model E5396 68702 Retention module dimensions are ...

Page 101: ...are compatible with the Agilent Pro Series Soft Touch logic probe footprint E5402A E5404A E5405A and E5406A When probing an existing Pro Series Soft Touch footprint refer to the Agilent E5400 Pro Series Soft Touch Connectorless Probes User s Guide for specifics about signal and clock locations The N2888A half channel probe head contains 18 single connections and 8 dedicated ground connections This...

Page 102: ... Series Soft Touch logic probe footprint E5396A and E5398A When probing an existing Half Channel Series Soft Touch footprint refer to the Agilent E5400 Pro Series Soft Touch Connectorless Probes User s Guide for specifics about signal and clock locations Figure 67 Pin Outs for N2887A Soft Touch Pro ...

Page 103: ...Using Probe Heads 2 N2887A 8A Soft Touch Probe Heads 1168 9A Probes User s Guide 103 Figure 68 Pin Outs for N2888A Soft Touch Half Channel ...

Page 104: ...104 1168 9A Probes User s Guide 2 Using Probe Heads N2887A 8A Soft Touch Probe Heads ...

Page 105: ...break you can replace the tips without having to replace the entire probe head or having to send it back for repair This chapter shows you how to install or repair the leads on the following probe heads and tips N5381A differential solder in probe head N5382A differential browser probe head N5451A long wired ZIF tips for the N5425A ZIF probe head E2677A differential solder in probe head E2679A sin...

Page 106: ...ch tin plated nickel wires 01169 81301 0 005 inch tin plated nickel wires 01169 21306 0 005 inch tin plated steel wires 01169 21304 Table 19 Recommended Equipment Equipment Vise or clamp for holding tip Metcal STTC 022 600 C or STTC 122 700 C tip soldering iron or equivalent The 600 C tip will help limit burning of the FR4 tip PC board 0 381 mm 0 015 in diameter RMA flux standard tin lead solder w...

Page 107: ...r on the sides or at the top and bottom Figure 69 Clamping the Probe Head 2 If you need to remove an existing or damaged lead wire grab the wire lead with tweezers and pull very gently up Touch the soldering iron to the solder joint just long enough for the wire to come free of the probe head tip CAUTION To avoid burning and damage to the pc board do not keep the soldering iron in contact with the...

Page 108: ...own in figure 70 Do not trim the lead length until the end of this procedure where a trim gauge is used Figure 70 Wire Lead Trim Dimensions 7 Holding the wire in one hand and the soldering iron in the other hand position the end of the wire lead over the solder filled hole Touch the soldering iron to the side of the hole When the solder in the hole melts the wire lead will fall into the hole Remov...

Page 109: ... Wire Cut Flush with Solder pad 9 Place the wires through the hole in the trim gauge with the probe head perpendicular to the trim gauge Figure 72 Trim Guage on Probe Head 10 Cut the wires even with the trim gauge on the side opposite of the probe head Cut flush with solder pad Trim Gauge ...

Page 110: ...obes User s Guide 3 Maintaining Probe Heads N5381 2A Probe Heads Figure 73 Cutting Wires Flush with Gauge 11 When replacing wires on the N5382A Browser bend the wires down at about a 30 angle Figure 74 Wires Bent 30 ...

Page 111: ...roperly trim and shape the lead use the Agilent supplied trim template that is included as part of the N5451A packaging Figure 75 N5451A Trim Template N5451 94301 1 Using tweezers place resistor body on the trim template The trim template contains two lengths 7 mm and 11 mm Choose the correct length for your application NOTE Place resistor body over the outline of the resistor on shown the templat...

Page 112: ...line 4 If you need to remove an existing or damaged lead wire grab the wire lead with tweezers and pull very gently up Touch the soldering iron to the solder joint just long enough for the wire to come free of the probe head tip CAUTION To avoid burning and damage to the pc board do not keep the soldering iron in contact with the tip any longer than necessary The solder joint has very low thermal ...

Page 113: ... hole of the circular traces on the board Align the corresponding resistor faces as shown in Figure 79 Make length adjustments as needed Figure 79 Resistors Inserted into Tip 7 Momentarily apply the soldering iron tip to the resistor lead wires as shown in Figure 80 Touch the solder to the heated lead wire near the trace hole A good fillet should form around the lead wire thus sealing the trace ho...

Page 114: ...shows good solder fillets surrounding the resistor lead wires After soldering clean board of any excess flux On the ZIF Tip s opposite side trim any excess lead wire protruding from the board Figure 80 Soldering the Resistors Figure 81 Solder Fillets Surrounding the Resistor Lead Wires ...

Page 115: ... For Bandwidth 91W Full 150W Medium 0W Full and Medium Table 21 Recommended Equipment Equipment Vise or clamp for holding tip Metcal STTC 022 600 C or STTC 122 700 C tip soldering iron or equivalent The 600 C tip will help limit burning of the FR4 tip PC board 0 381 mm 0 015 in diameter RMA flux standard tin lead solder wire Fine stainless steel tweezers Rosin flux pencil RMA type Kester 186 or eq...

Page 116: ...s clamp grip the tip either on the sides or at the top and bottom Figure 82 Clamping the Probe Head 2 If you need to remove an existing or damaged lead wire grab each resistor lead or body with tweezers and pull very gently up Touch the soldering iron to the solder joint just long enough for the resistor to come free of the probe head tip CAUTION To avoid burning and damage to the pc board do not ...

Page 117: ...stor for attachment to the head s pc board The lead to be attached to head s pc board will have a 90 bend to go into through hole in the tip pc board 6 Using tweezers place the resistor body inside the rectangle of the trim template Figure 83 Agilent Supplied Template Included With Resistors 7 Using the X acto knife trim the leads even with the trim lines 8 Place resistor body inside the rectangle...

Page 118: ...85 150W and 0W Combination Resistor Trim Dimensions NOTE Do not use the wrong value of resistor at the wrong length 10 Holding the resistor lead or wire in one hand and soldering iron in the other position the end of the resistor lead after the 90 bend over the solder filled hole Touch the soldering iron to the side of the hole When the solder in the hole ...

Page 119: ...of the joint is very small so taking extra time with the soldering iron in an attempt to ensure a good joint is not needed NOTE Make sure the zero ohm resistor is used for ground leads on the E2679A single ended probe head NOTE For the E2677A differential solder in probe head the and connection can be determined when the probe head is plugged into the probe amplifier so which way the tip is solder...

Page 120: ...120 1168 9A Probes User s Guide 3 Maintaining Probe Heads E2677A 9A Solder In Probe Heads ...

Page 121: ...alibration for Hand Held Browser Probe Heads 131 N2887A N2888A Calibration and Deskew Procedure 133 This document contains procedures for vertical and skew calibration of the solder in differential probe head and the differential browser probe head The procedures can also be applied to all of the different InfiniiMax probe configurations ...

Page 122: ...ntrol should be adjusted to center your signal within the 3 3V peak to peak 16V peak to peak for slow signals dynamic range of the probe This calibration and deskew should be performed before using the probe Procedure 1 Connect the probe output to the oscilloscope input 2 Calibrate the oscilloscope and probe combination using the Infiniium probe calibration routine When the probe has been calibrat...

Page 123: ... box Step 1 Connecting the Probe for Calibration The calibration procedure requires the following parts BNC male to SMA male adaptor Deskew fixture 50Ω SMA terminator 1 As shown in Figure 86 on page 125 connect BNC male to SMA male adapter to the deskew fixture on the connector closest to the yellow pincher 2 Connect the 50Ω SMA terminator to the connector farthest from the yellow pincher 3 Connec...

Page 124: ... 7 Release the yellow pincher NOTE To ensure contact pull up on the back side of the yellow pincher to ensure good contact between resistor leads and the deskew fixture Step 2 Verifying the Connection 1 On the oscilloscope press the autoscale button on the front panel 2 Set the volts per division to 100 mV div 3 Set the horizontal scale to 1 00 ns div 4 Set the horizontal position to approximately...

Page 125: ...Calibrating Probes 4 Calibration for Solder In and Socketed Probe Heads 1168 9A Probes User s Guide 125 Figure 86 Connecting the Probe and Deskew Fixture ...

Page 126: ...126 1168 9A Probes User s Guide 4 Calibrating Probes Calibration for Solder In and Socketed Probe Heads Figure 87 Good Connection Figure 88 Bad Connection ...

Page 127: ...t Skew Calibration button and follow the on screen instructions for the skew calibration At the end of each calibration the oscilloscope will inform you if the calibration was or was not successful Verifying the Probe Calibration If you have just successfully calibrated the probe it is not necessary to perform this verification However if want to verify the probe was properly calibrated the follow...

Page 128: ... Aux Out BNC of the Infiniium oscilloscope 5 Connect the probe to an oscilloscope channel 6 To minimize the wear and tear on the probe head the probe head should be placed on a support to relieve the strain on the probe head cables 7 Push down on the back side of the yellow pincher Insert the probe head resistor lead underneath the center of the yellow pincher and over the center conductor of the ...

Page 129: ...oscope press the autoscale button on the front panel 10 Select Setup menu and choose the channel connected to the BNC cable from the pull down menu 11 Select the Probes button 12 Select the Configure Probe System button 13 Select User Defined Probe from the pull down menu 14 Select the Calibrate Probe button 15 Select the Calibrated Skew radio button ...

Page 130: ...ale for the displayed channels to 100 mV div 19 Set the horizontal range to 1 00 ns div 20 Set the horizontal position to approximately 3 ns 21 Change the vertical position knobs of both channels until the waveforms overlap each other 22 Select the Setup menu choose Acquisition from the pull down menu 23 In the Acquisition Setup dialog box enable averaging When you close the dialog box you should ...

Page 131: ...n dialog box Calibration Setup The calibration procedure requires the following parts BNC male to SMA male adaptor Deskew fixture 50Ω SMA terminator 1 As shown in Figure 91 on page 132 connect BNC male to SMA male adaptor to the deskew fixture on the connector closest to the yellow pincher 2 Connect the 50Ω SMA terminator to the connector farthest from the yellow pincher 3 Connect the BNC side of ...

Page 132: ...be Cal dialog box select the Calibrated Atten Offset radio button 10 Select the Start Atten Offset Calibration button and follow the on screen instructions for the vertical calibration procedure 11 Once the vertical calibration has successfully completed select the Calibrated Skew button 12 Select the Start Skew Calibration button and follow the on screen instructions for the skew calibration Figu...

Page 133: ...SMA terminator Deskew Fixture Calibration of the N2887A N2888A probe heads consists of a vertical calibration and a skew calibration The vertical calibration should be performed before the skew calibration Both calibrations should be performed for best probe measurement performance NOTE Before calibrating the probe verify that the Infiniium oscilloscope has been recently calibrated and that the ca...

Page 134: ...NC on the Infiniium oscilloscope 4 Connect either the N2887A or N2888A probe head to the deskew fixture as shown in the Figure 92 on the following page note use the appropriate connector for either the N2887A or N2888A model as shown on the following page Figure 92 Deskew Fixture with N2887 8A Connections 5 Connect the InfiniiMax probe amplifier to an oscilloscope channel 6 Connect one of the lead...

Page 135: ...strain on the probe head cables NOTE Please note that you are only deskewing one channel on the InfiniiMax Soft Touch probe head in this procedure The other channels are nominally identical 15 ps The major source of skew when using multiple InfiniiMax amplifiers with a single InfiniiMax Soft Touch probe head is the variations from one amplifier to another This skew can be addressed by repeating th...

Page 136: ...136 1168 9A Probes User s Guide 4 Calibrating Probes N2887A N2888A Calibration and Deskew Procedure ...

Page 137: ...l 138 InfiniiMax II Series with N5380B SMA Probe Head 141 Environmental 145 Probe Dimensions 146 All characteristics are the typical performance values of the InfiniiMax probes using the probe amplifier and N5381A differential solder in probe head and are not warranted ...

Page 138: ... 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 NOTE Do not dispose in domestic household waste To return unwanted products contact your local Agilent office or see www agilent com for more information WARNING The RATED transient overvoltage is 80 volts peak Table 22 Sp...

Page 139: ...nd Fall Time 10 to 90 Phase corrected on DSO90000A Series Oscilloscope 1168A 1169A 42 ps 36 ps Rise and Fall Time 20 to 80 Phase corrected on DSO90000A Series Oscilloscope 1168A 1169A 30 ps 25 ps Input Capacitance Cm 0 09 pF ModelforinputCisCmisbetweentips and Cg is to ground for each tip Cg 0 26 pF Cdiff 0 21 pF Differential mode capacitance capacitance when probing a differential signal Cm Cg 2 ...

Page 140: ...curacy 3 b Noise referred to Input 2 5 mVrms Propagation Delay 6 ns Maximum Input Voltage 30V Peak CAT I Maximum non destructive voltage on each input ground ESD Tolerance 8 kV from 150 pF 330Ω HBM a Srmax of a sine wave Amp x 2 x p x frequency or SRmax of a step Amp x 0 6 trise 20 to 80 For more information refer to Table 9 on page 33 b When calibrated on the oscilloscope these characteristics ar...

Page 141: ...ith N5380B SMA Probe Head 1168A 9A Probe s User s Guide 141 InfiniiMax II Series with N5380B SMA Probe Head All characteristics are the typical performance values of the InfiniiMax probes using the probe amplifier and N5380B SMA probe head and are not warranted ...

Page 142: ...tage N5380A SMA Probe Head To 50ohm inputs of probe amplifier L comp4 R R8 R 14 4 Ohm R R1 R 14 4 Ohm C Bypass1 R R2 R 221 Ohm R R7 R 221 Ohm C Bypass4 L Ferrite1 L Ferrite3 Port CM_Term L Ferrite4 L Ferrite2 Port NegOut Port NegIn L comp3 C Surgx2 C C2 C 4 pF R R6 R 50 Ohm C Bypass3 L L2 R R5 R 12 4k R R3 R 12 4k L L1 C Bypass2 R R4 R 50 Ohm Port PosOut C C1 C 4 pF Port PosIn C Surgx1 L comp1 L c...

Page 143: ... Slew Rate c SMA attenuator can extend range d 25 V ns Differential Input DC Attenuation 2 2 1 6 9 dB Zero Offset Error Referred to Input 2 mV Noise Referred to Input 1 6 mVrms 14 nV rtHz using noise BW of 12 5 GHz Propagation Delay 6 15 ns a Decreased rise and fall times mainly due to phase correction performed in the DSO80000 series not due to DSP boosting except in DSO81304A b Vcm_term is the v...

Page 144: ...144 1168A 9A Probe s User s Guide 5 Characteristics and Specifications InfiniiMax II Series with N5380B SMA Probe Head Figure 93 N5380B SMA Probe Head Simplified Schematic ...

Page 145: ... C to 70 C Humidity up to 95 relative humidity non condensing at 40 C up to 90 relative humidity at 65 C Altitude Up to 4 600 meters Up to 15 300 meters Power Requirements Voltages supplied by Agilent oscilloscope AutoProbe Interface Weight approximately 0 69 kg Dimensions Refer to Probe Dimensions on page 146 Pollution degree 2 Normally only non conductive pollution occurs Occasionally however a ...

Page 146: ...146 1168A 9A Probe s User s Guide 5 Characteristics and Specifications Probe Dimensions Probe Dimensions Figure 94 Probe Amplifier Dimensions ...

Page 147: ...haracteristics and Specifications 5 Probe Dimensions 1168A 9A Probe s User s Guide 147 Figure 95 N5381A and N5382A Probe Head Dimensions Figure 96 01131 62103 Solder in Differential Probe Head Dimensions ...

Page 148: ...148 1168A 9A Probe s User s Guide 5 Characteristics and Specifications Probe Dimensions Figure 97 N5425A ZIF Probe Head Dimensions with ZIF Tip Attached ...

Page 149: ...Characteristics and Specifications 5 Probe Dimensions 1168A 9A Probe s User s Guide 149 Figure 98 N5451A ZIF Probe Head Dimensions with Long Wired ZIF Tip Attached ...

Page 150: ...150 1168A 9A Probe s User s Guide 5 Characteristics and Specifications Probe Dimensions ...

Page 151: ...ed ZIF Tip 165 7 mm Leads with 0 Separation 166 7 mm Leads with 60 Separation 169 11 mm Leads with 0 Separation 173 11 mm Leads with 60 Separation 177 N5426A ZIF Probe Tip Impedance 180 E2675A Differential Browser 181 E2676A Single Ended Browser 184 E2677A Differential Solder in Probe Head High BW 187 E2678A Differential Socketed Probe Head High BW 190 E2678A Differential Socketed Probe Head w Dam...

Page 152: ...he probe is used with the 90000 series oscilloscope magnitude and phase correction is applied to further optimize the overall response Figure 99 Step response with and without phase correction Normalized to an ideal input step 0 0 2 0 4 0 6 0 8 1 1 2 1 4 1 6 1 8 2 x 10 9 0 05 0 0 05 0 1 0 15 0 2 0 25 0 3 0 35 0 4 0 45 0 5 0 55 0 6 Time Seconds Volts tr10 90 42 ps tr20 80 28 ps tr10 90 32 ps tr20 8...

Page 153: ... ps step Figure 101 Magnitude plot of differential insertion loss 6 8 dB 0 0 2 0 4 0 6 0 8 1 1 2 1 4 1 6 1 8 2 x 10 9 0 05 0 0 05 0 1 0 15 0 2 0 25 0 3 0 35 0 4 0 45 0 5 0 55 0 6 Time Seconds Volts Vout tr 10 90 60 ps tr20 80 40 ps Vincident tr10 90 57 ps tr20 80 38 ps 10 8 10 9 10 10 12 9 6 3 0 3 6 Frequency Hz dB BW 3 dB 12 6 GHz ...

Page 154: ... SMA Probe Head Full BW Figure 102 Magnitude plot of differential return loss Figure 103 Magnitude plot of common mode response 6 8dB common mode rejection 10 8 10 9 10 10 60 50 40 30 20 10 0 Frequency Hz dB 10 8 10 9 10 10 60 50 40 30 20 10 0 10 Frequency Hz dB ...

Page 155: ...the 1134A probe using N5380B probe head Figure 104 Vincident and Vout of probe with a 90 ps step Figure 105 Magnitude response of differential insertion loss 16 03 dB 0 0 2 0 4 0 6 0 8 1 1 2 1 4 1 6 1 8 2 x 10 9 0 05 0 0 05 0 1 0 15 0 2 0 25 0 3 0 35 0 4 0 45 0 5 Time Seconds V olts Vout tr10 90 88 5 ps tr20 80 58 8 ps Vincident tr10 90 90 ps tr20 80 60 ps 10 8 10 9 10 10 12 9 6 3 0 3 6 Frequency ...

Page 156: ...re for the 1168A and 1169A probes using N5381A and N5382A probe heads NOTE Unless otherwise noted time and frequency responses shown here are for the probe only When the probe is used with the 90000 series oscilloscope magnitude and phase correction can be applied to further optimize the overall response Figure 106 Step Response With and Without Phase Correction Normalized to an Ideal Input Step ...

Page 157: ...gure 108 Vin and Vout of probe with a 25W 58 ps step generator 0 0 2 0 4 0 6 0 8 1 1 2 1 4 1 6 1 8 2 x 10 9 0 05 0 0 05 0 1 0 15 0 2 Time Seconds Volts Vsource tr10 90 58 ps tr20 80 37 ps Vin tr10 90 65 ps tr20 80 40 ps 0 0 2 0 4 0 6 0 8 1 1 2 1 4 1 6 1 8 2 x 10 9 0 05 0 0 05 0 1 0 15 0 2 Time Seconds Volts Vout tr 10 90 67 ps tr20 80 44 ps Vin tr10 90 65 ps tr20 80 40 ps ...

Page 158: ...d dB Vout 10 8 dB of probe with a 25W source and dB Vout Vin 10 8 dB frequen cy response Figure 110 dB Vout Vin 10 8 dB frequency response when inputs driven in common common mode rejec tion 10 8 10 9 10 10 12 9 6 3 0 3 6 Frequency Hz dB Vout Vin Vin Vout BW 3 dB 13 GHz 10 8 10 9 10 10 60 50 40 30 20 10 0 Frequency Hz dB ...

Page 159: ...1168A 9A Probe s User s Guide 159 Figure 111 Magnitude plot of probe input impedance versus frequency 10 6 10 7 10 8 10 9 10 10 10 1 10 2 10 3 10 4 10 5 Frequency Hz Ω Single ended Mode Input Differential Mode Input Zmin 203 1 W Zmin 164 3 W 50 kW 25 kW 0 35 pF 0 21 pF ...

Page 160: ... 58 ps step generator with the recommended wire length twice the recommended wire length with wires parallel to each other and twice the recommended wire length with wires spread 90 degrees Figure 112 Probe Response 0 0 2 0 4 0 6 0 8 1 1 2 1 4 1 6 1 8 2 x 10 9 0 05 0 0 05 0 1 0 15 0 2 0 25 Time Seconds Volts Correct length tr10 90 67 ps Correct length times 2 wires spread 90 degrees tr10 90 68 ps ...

Page 161: ...robe only when the probe is used with the 90000 series oscilloscope magnitude and phase correction is applied to further optimize the overall response Figure 113 Step response with and without phase correction Normalized to an ideal input step 0 0 2 0 4 0 6 0 8 1 1 2 1 4 1 6 1 8 2 x10 9 0 2 0 0 2 0 4 0 6 0 8 1 1 2 Tim e Seconds V olts tr10 90 40 ps tr20 80 28 ps tr10 90 32 ps tr20 80 23 ps Without...

Page 162: ... 115 Vin and Vout of probe with a 25W 58 ps step 0 0 2 0 4 0 6 0 8 1 1 2 1 4 1 6 1 8 2 x10 9 0 2 0 0 2 0 4 0 6 0 8 1 1 2 Tim e Seconds V olts Vin tr10 90 70 ps tr20 80 46 ps Vsource tr10 90 58 ps tr20 80 39 ps 0 0 2 0 4 0 6 0 8 1 1 2 1 4 1 6 1 8 2 x10 9 0 2 0 0 2 0 4 0 6 0 8 1 1 2 Tim e Seconds V olts Vout tr 10 90 67 ps Vin tr10 90 70 ps tr20 80 46 ps ...

Page 163: ... 8 dB of probe with a 25 W source and dB Vout Vin 10 8 dB frequen cy response Figure 117 dB Vout Vin 10 8 dB frequency response when inputs driven in common common mode rejec tion 10 8 10 9 10 10 12 9 6 3 0 3 6 9 Frequency H z dB Vout Vin Vin Vout BW 3 dB 12 3 GHz 10 8 10 9 10 10 60 50 40 30 20 10 0 Frequency H z dB ...

Page 164: ...25A ZIF Probe Head Full BW Figure 118 Magnitude plot of probe input impedance versus frequency 10 6 10 7 10 8 10 9 10 10 10 1 10 2 10 3 10 4 10 5 Frequency H z Ω Single ended Mode Input Differential Mode Input Zmin 222 W Zmin 168 W 50 kW 25 kW 0 53 pF 0 33 pF ...

Page 165: ...acteristic plots are for the 1168A and 1169A probes using the N5451A ZIF tip The plots are organized according to tip s lead length and separation between leads NOTE Unless otherwise noted time and frequency responses shown here are for the probe only When the probe is used with the 90000 series oscilloscope magnitude and phase correction is applied to further optimize the overall response ...

Page 166: ...ut the probe connected Figure 120 Vin and Vout of probe with a 25W 71 ps step generator 0 0 2 0 4 0 6 0 8 1 1 2 1 4 1 6 1 8 2 x10 9 0 05 0 0 05 0 1 0 15 0 2 Tim e Seconds V olts Vsource tr10 90 71 ps tr20 80 48 ps Vin tr10 90 88 ps tr20 80 55 ps 0 0 2 0 4 0 6 0 8 1 1 2 1 4 1 6 1 8 2 x10 9 0 05 0 0 05 0 1 0 15 0 2 Tim e Se conds V olts Vout tr10 90 88 ps tr20 80 56 ps Vin tr10 90 88 ps ...

Page 167: ...dB Vin and dB Vout 10 8 dB of probe with a 25 W source and dB Vout Vin 10 8 dB frequen cy response Figure 122 dB Vout Vin 10 8 dB frequency response when inputs driven in common common mode rejec tion 10 8 10 9 10 10 12 9 6 3 0 3 dB Vout Vin Vout Vin BW 3dB 9 9 GHz 10 8 10 9 10 10 70 60 50 40 30 20 10 Frequency H z dB ...

Page 168: ...nce Plots N5425A ZIF Probe Head with N5451A Long Wired ZIF Tip Figure 123 Magnitude plot of probe input impedance versus frequency single ended mode input 10 6 10 7 10 8 10 9 10 10 10 1 10 2 10 3 10 4 10 5 Frequency H z Ω Zmin 156 W 0 6 pF 25 kW ...

Page 169: ...s with 60 Separation The following graphs are for 7 mm long leads with 60 separation between the resistor leads Figure 124 25W 167 ps step generator with and without the probe connected 0 0 2 0 4 0 6 0 8 1 1 2 1 4 1 6 1 8 2 x10 9 0 05 0 0 05 0 1 0 15 0 2 Tim e Seconds V olts Vsource tr10 90 167 ps Vin tr10 90 193 ps ...

Page 170: ... a 25W 167 ps step generator Figure 126 dB Vin and dB Vout 10 8 dB of probe with a 25W source and dB Vout Vin 10 8 dB frequen cy response 0 0 2 0 4 0 6 0 8 1 1 2 1 4 1 6 1 8 2 x10 9 0 05 0 0 05 0 1 0 15 0 2 Tim e Seconds V olts Vout tr10 90 172 ps Vin tr10 90 193 ps 10 8 10 9 10 10 12 9 6 3 0 3 Frequency H z dB Vout Vin Vout Vin BW 3dB 4 4 GHz ...

Page 171: ... Probe Head with N5451A Long Wired ZIF Tip 1168A 9A Probe s User s Guide 171 Figure 127 dB Vout Vin 10 8 dB frequency response when inputs driven in common common mode rejec tion 10 8 10 9 10 10 70 60 50 40 30 20 10 Frequency H z dB ...

Page 172: ...nce Plots N5425A ZIF Probe Head with N5451A Long Wired ZIF Tip Figure 128 Magnitude plot of probe input impedance versus frequency single ended mode input 10 6 10 7 10 8 10 9 10 10 10 1 10 2 10 3 10 4 10 5 Frequency H z Ω Zmin 169 W 0 58 pF 25 kΩ ...

Page 173: ... 0 Separation The following graphs are for 11 mm long leads with 0 separation between the resistor leads Figure 129 25W 152 ps step generator with and without the probe connected 0 0 2 0 4 0 6 0 8 1 1 2 1 4 1 6 1 8 2 x10 9 0 05 0 0 05 0 1 0 15 0 2 Tim e Seconds V olts Vsource tr10 90 152 ps tr20 80 104 ps Vin tr10 90 180 ps ...

Page 174: ...ots N5425A ZIF Probe Head with N5451A Long Wired ZIF Tip Figure 130 Vin and Vout of probe with a 25W 152 ps step generator 0 0 2 0 4 0 6 0 8 1 1 2 1 4 1 6 1 8 2 x10 9 0 05 0 0 05 0 1 0 15 0 2 Tim e Seconds V olts Vout tr10 90 161 ps Vin tr10 90 180 ps ...

Page 175: ...and dB Vout 10 8 dB of probe with a 25W source and dB Vout Vin 10 8 dB frequen cy response Figure 132 dB Vout Vin 10 8 dB frequency response when inputs driven in common common mode rejec tion 10 8 10 9 10 10 12 9 6 3 0 3 Frequency H z dB Vout Vin Vin Vout BW 3dB 5 GHz 10 8 10 9 10 10 80 70 60 50 40 30 20 10 Frequency H z dB ...

Page 176: ...Plots N5425A ZIF Probe Head with N5451A Long Wired ZIF Tip Figure 133 Magnitude plot of probe input impedance versus frequency single ended mode input 10 4 10 5 10 6 10 7 10 8 10 9 10 10 10 2 10 3 10 4 10 5 Fre que ncy H z Ω Zmin 160 W 0 68 pF 25 kW ...

Page 177: ...r leads Figure 134 25W 226 ps step generator with and without the probe connected Figure 135 Vin and Vout of probe with a 25W 226 ps step generator 0 0 2 0 4 0 6 0 8 1 1 2 1 4 1 6 1 8 2 x10 9 0 05 0 0 05 0 1 0 15 0 2 Tim e Seconds V olts Vsource tr10 90 226 ps Vin tr10 90 254 ps 0 0 2 0 4 0 6 0 8 1 1 2 1 4 1 6 1 8 2 x10 9 0 05 0 0 05 0 1 0 15 0 2 Tim e Seconds V olts Vin tr10 90 254 ps tr20 80 169...

Page 178: ...Vin and dB Vout 10 8 dB of probe with a 25W source and dB Vout Vin 10 8 dB frequen cy response Figure 137 dB Vout Vin 10 8 dB frequency response when inputs driven in common common mode rejec tion 10 8 10 9 10 10 12 9 6 3 0 3 Frequency H z dB Vout Vin Vin Vout BW 3dB 3 3 GHz 10 8 10 9 10 10 50 40 30 20 10 Frequency H z dB ...

Page 179: ...h N5451A Long Wired ZIF Tip 1168A 9A Probe s User s Guide 179 Figure 138 Magnitude plot of probe input impedance versus frequency single ended mode input 10 4 10 5 10 6 10 7 10 8 10 9 10 10 2 10 3 10 4 10 5 Frequency H z Ω 25 kW Vmin 160W 0 68 pF ...

Page 180: ... The impedance plot shown in Figure 139 is of the ZIF probe tip without the probe head connected Figure 139 Magnitude plot of accessory input impedance versus frequency 10 9 10 10 10 1 10 2 10 3 10 4 10 5 Frequency H z Ω Single ended Mode Input Differential Mode Input Zmin 177 W Zmin 153 W 50 kW 25 kW 181 fF 143 fF ...

Page 181: ...36 ps step generator with and without probe connected Figure 141 Vin and Vout of probe with a 25W 136 ps step generator 0 0 2 0 4 0 6 0 8 1 1 2 1 4 1 6 1 8 2 x 10 9 0 05 0 0 05 0 1 0 15 0 2 Time Seconds V olts Vsource tr10 90 136 ps tr20 80 90 ps Vin tr10 90 160 ps 0 0 2 0 4 0 6 0 8 1 1 2 1 4 1 6 1 8 2 x10 9 0 05 0 0 05 0 1 0 15 0 2 Time Seconds V olts Vout tr 10 90 143 ps tr20 80 97 ps Vin tr10 9...

Page 182: ... Performance Plots E2675A Differential Browser Figure 142 dB Vin and dB Vout 10 8 dB of probe with a 25W source and dB Vout Vin 10 8 dB frequen cy response 10 8 10 9 10 10 12 9 6 3 0 3 6 Frequency Hz dB Vout Vin Vin Vout BW 3 dB 5 2 GHz ...

Page 183: ...robe s User s Guide 183 Figure 143 Magnitude plot of probe input impedance versus frequency 10 6 10 7 10 8 10 9 10 10 10 1 10 2 10 3 10 4 10 5 Frequency H z Ω Single ended Mode Input Differential Mode Input Zmin 229 2 W Zmin 153 4 W 50 kW 25 kW 0 57 pF 0 32 pF ...

Page 184: ...lowing performance characteristic plots are for the 1169A probe using E2676A probe head Figure 144 25W 100 ps step generator with and without probe connected 0 0 2 0 4 0 6 0 8 1 1 2 1 4 1 6 1 8 2 x 10 9 0 05 0 0 05 0 1 0 15 0 2 Time Seconds V olts Vsource tr10 90 136 ps tr20 80 90 ps Vin tr10 90 174 ps tr20 80 109 ps ...

Page 185: ... Figure 146 dB Vin and dB Vout 10 8 dB of probe with a 25W source and dB Vout Vin 10 8 dB frequen cy response 0 0 2 0 4 0 6 0 8 1 1 2 1 4 1 6 1 8 2 x 10 9 0 05 0 0 05 0 1 0 15 0 2 Time Seconds Volts Vout tr 10 90 152 ps tr20 80 102 ps Vin tr10 90 174 ps tr20 80 109 ps 10 8 10 9 10 10 12 9 6 3 0 3 6 9 Frequency Hz dB Vout Vin Vin Vout BW 3 dB 6 GHz ...

Page 186: ... resonant peak at 10 GHz This probe head was designed for the 1134A 7 GHz probe system The input signal should be limited to an equivalent bandwidth of about 4 2 GHz 110 ps 10 90 to prevent ringing at 10 GHz Figure 147 Magnitude plot of probe input impedance versus frequency 10 6 10 7 10 8 10 9 10 10 10 1 10 2 10 3 10 4 10 5 Frequency H z Ω Zmin 120 W 25 kW 0 65 pF ...

Page 187: ... is preferred Variations in the manufacture and positioning of the mini axial lead resistors used with the E2677A cause variations in the response If you must use the E2677A ensure that the mini axial lead resistors are positioned directly adjacent to each other and touching Figure 148 25W 58 ps step generator with and without probe connected 0 0 2 0 4 0 6 0 8 1 1 2 1 4 1 6 1 8 2 x 10 9 0 05 0 0 0...

Page 188: ... ps step generator Figure 150 dB Vin and dB Vout 10 8 dB of probe with a 25W source and dB Vout Vin 10 8 dB frequen cy response 0 0 2 0 4 0 6 0 8 1 1 2 1 4 1 6 1 8 2 x 10 9 0 05 0 0 05 0 1 0 15 0 2 Time Seconds V olts Vout tr 10 90 73 ps Vin tr10 90 66 ps tr20 80 40 ps 10 8 10 9 10 10 12 9 6 3 0 3 6 Frequency Hz dB Vout Vin Vin Vout BW 3 dB 12 7 GHz ...

Page 189: ...168A 9A Probe s User s Guide 189 Figure 151 Magnitude plot of probe input impedance versus frequency 10 6 10 7 10 8 10 9 10 10 10 1 10 2 10 3 10 4 10 5 Frequency H z Ω Single ended Mode Input Differential Mode Input Zmin 272 8 W Zmin 201 8 W 50 kW 25 kW 0 44 pF pF 0 27 pF ...

Page 190: ...be head Figure 152 25W 58 ps step generator with and without probe connected Figure 153 Vin and Vout of probe with a 25W 58 ps step generator 0 0 2 0 4 0 6 0 8 1 1 2 1 4 1 6 1 8 2 x10 9 0 05 0 0 05 0 1 0 15 0 2 Time Seconds Volts Vsource tr10 90 58 ps tr20 80 37 ps Vin tr10 90 68 ps 0 0 2 0 4 0 6 0 8 1 1 2 1 4 1 6 1 8 2 x 10 9 0 05 0 0 05 0 1 0 15 0 2 Time Seconds V olts Vout tr 10 90 73 ps tr20 8...

Page 191: ...al Socketed Probe Head High BW 1168A 9A Probe s User s Guide 191 Figure 154 dB Vin and dB Vout 10 8 dB of probe with a 25W source and dB Vout Vin 10 8 dB frequen cy response 10 8 10 9 10 10 12 9 6 3 0 3 6 Frequency Hz dB Vout Vin Vin Vout ...

Page 192: ...ntial Socketed Probe Head High BW Figure 155 Magnitude plot of probe input impedance versus frequency 10 6 10 7 10 8 10 9 10 10 10 1 10 2 10 3 10 4 10 5 Frequency H z Ω Single ended Mode Input Differential Mode Input Zmin 234 9 W Zmin 174 6 W 50 kW 25 kW 0 56 pF 0 34 pF ...

Page 193: ...obe head with the damped wire accessory NOTE Due to reflections on the long wire accessories signals being probed should be limited to 240 ps rise time measured at the 10 and 90 amplitude levels This is equivalent to 1 5 GHz bandwidth Figure 156 25W 295 ps step generator with and without probe connected 0 0 2 0 4 0 6 0 8 1 1 2 1 4 1 6 1 8 2 x10 9 0 05 0 0 05 0 1 0 15 0 2 Time Seconds Volts Vsource...

Page 194: ...295 ps step generator Figure 158 dB Vin and dB Vout 10 8 dB of probe with a 25W source and dB Vout Vin 10 8 dB frequen cy response 0 0 2 0 4 0 6 0 8 1 1 2 1 4 1 6 1 8 2 x 10 9 0 05 0 0 05 0 1 0 15 0 2 Time Seconds Volts Vout tr 10 90 464 ps tr20 80 294 ps Vin tr10 90 334 ps tr20 80 217 ps 10 8 10 9 10 10 12 9 6 3 0 3 6 Frequency Hz dB Vout Vin Vin Vout ...

Page 195: ...re 1168A 9A Probe s User s Guide 195 Figure 159 Magnitude plot of probe input impedance versus frequency 10 6 10 7 10 8 10 9 10 10 10 1 10 2 10 3 10 4 10 5 Frequency H z Ω Single ended Mode Input Differential Mode Input Zmin 344 0 W Zmin 248 9 W 50 kW 25 kW 0 95 pF 0 63 pF ...

Page 196: ...head Figure 160 25W 136 ps step generator with and without probe connected Figure 161 Vin and Vout of probe with a 25W 136 ps step generator 0 0 2 0 4 0 6 0 8 1 1 2 1 4 1 6 1 8 2 x 10 9 0 05 0 0 05 0 1 0 15 0 2 Time Seconds Volts Vsource tr10 90 136 ps tr20 80 90 ps Vin tr10 90 163 ps 0 0 2 0 4 0 6 0 8 1 1 2 1 4 1 6 1 8 2 x10 9 0 05 0 0 05 0 1 0 15 0 2 Time Seconds V olts Vout tr 10 90 152 ps tr20...

Page 197: ...B Vout 10 8 dB of probe with a 25W source and dB Vout Vin 10 8 dB frequen cy response Figure 163 Magnitude plot of probe input impedance versus frequency 10 8 10 9 10 10 12 9 6 3 0 3 6 Frequency Hz dB Vout Vin Vin Vout BW 3 dB 5 2 GHz 10 6 10 7 10 8 10 9 10 10 10 1 10 2 10 3 10 4 10 5 Frequency H z Ω Zmin 142 9 W 25 kW 0 50 pF ...

Page 198: ... probe head Figure 164 Vincident and Vout of probe with a 90 ps step Figure 165 Magnitude response of differential insertion loss 1 03 dB 0 0 2 0 4 0 6 0 8 1 1 2 1 4 1 6 1 8 2 x 10 9 0 1 0 0 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 0 9 1 Time Seconds V olts Vout tr10 90 94 5 ps tr20 80 63 ps Vincident tr10 90 90 ps tr20 80 60 ps 10 8 10 9 10 10 12 9 6 3 0 3 6 Frequency Hz dB BW 3 dB 8 5 GHz ...

Page 199: ...obe using N2887 8A probe heads To properly interpret these plots it is important to define what differential and single ended means for these probe heads as shown in Figure 166 Note that the single ended configuration is not a differential probe probing a single ended signal but rather is a single ended probe probing a single ended signal Figure 166 Differential and Single ended Configurations ...

Page 200: ...A 9A Probe s User s Guide 6 Performance Plots N2887A N2888A Soft Touch Probe Heads Figure 167 Differential input impedance red model blue measured Figure 168 Single ended input impedance red model blue measured ...

Page 201: ...Performance Plots 6 N2887A N2888A Soft Touch Probe Heads 1168A 9A Probe s User s Guide 201 Figure 169 Frequency response N2887A with an 1169A 12 GHz amplifier red differential blue sin gle ended ...

Page 202: ...202 1168A 9A Probe s User s Guide 6 Performance Plots N2887A N2888A Soft Touch Probe Heads ...

Page 203: ...the bandwidth and input resistance performance of the probe 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 ensure that cables are discharged before being connected NOTE Allow the probe to warm up for at least 20 minutes ...

Page 204: ...or Network Analyzer VNA 13 GHz sweep range full 2 port cal Option 1D5 Agilent 8720ES Calibration Standards No Substitute Agilent 85052D External Power Supply No Substitute Agilent 1143A AutoProbe Interface Adapter No Substitute Agilent N1022A B Outside thread 3 5 mm male to 3 5 mm female adapter No Substitute Agilent 5062 1247 Cable 2 3 5 mil SMA High Quality Agilent 8120 4948 Cable 1 5 mil Probe ...

Page 205: ...l not to cross thread or force any connectors This could be a very costly error to correct Procedure 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...

Page 206: ...ine 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 one of the high quality SMA cables to port one and to the pincher side of PV DS test board as whown in Figure 171 on page 207 11 The calibration reference plane is at the other end of PV DS test board 12 Perform a Calibration for the PORT 1 side of the Reference plane a Press the reflec...

Page 207: ... 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 VNA beeps indicating that it has completed...

Page 208: ...tion for the PORT 2 side of the Reference plane a Press the reflection screen key b Connect the open end of Calibration Standard to the available end of the PORT 2 SMA cable c Select the open screen key under the Reverse group d Wait until the VNA beeps indicating that it has completed the task e Connect short end of Calibration Standard to the available end of the PORT 2 SMA cable f Select short ...

Page 209: ...s indicating that it has completed the task l Press the done loads screen key m You have just calibrated the other side of the reference plane 16 Press standards done key 17 Connect port two SMA cable to the non pincher side of PV DS test board Figure 173 Forward and Reverse Setup 18 Press the transmission screen key 19 Press the do both fwd and reverse screen key 20 Wait until the VNA beeps four ...

Page 210: ...y 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 key 30 Press the s21 screen key 31 Ensure s21 response on screen is flat about 0 1 dB out to 13 GHz Measuring Vin Response 32 Position the probe conveniently to make quality connections on the P...

Page 211: ... the tip of the PC board The best way to accomplish this is to insert the wires under the pincher with the probe head at a 45 angle with respect to the PV DS board then apply upward pressure to the clip to hold the tip wires firmly Gently pull the probe head up to the 90 position This will actually form the wires into an L shape 34 Place the probe s positive side on center conductor and negative s...

Page 212: ...out Response 39 Disconnect the PORT 2 cable from PV DS test board and attach to probe output on the AutoProbe Adapter 40 Connect the Calibration Standard load to PV DS test board non pincher side as shown in Figure 176 Figure 176 Setup for Measuring Vout 41 Press scale reference key on the VNA 42 Set reference value to 10 8 dB 43 The display on screen is Vout and it should be similar to that shown...

Page 213: ...an 1134A Probe Displaying Vout Vin Response on the VNA 44 Press the Display key 45 Then select the Data Memory screen key You may need to adjust the Reference Value located under the Scale Ref key slightly to position the waveform at center screen at 100 MHz The waveform should be similar to that shown in Figure 178 ...

Page 214: ...nal is 2 6 dB below center screen Minus 2 6 dB is used rather than 3 dB because the loss caused by the PV DS board makes a slightly optimistic measurement 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 limit Record the bandwidth in Table 30 on page 22...

Page 215: ...illoscope 3 Select the 2 wire Ohm display on the 34401A DMM Table 28 Input Resistance Mode Specification Differential Mode 50 kW 2 Single Ended Mode 25 kW 2 Table 29 Required Test Equipment Test Equipment Critical Specification Model Number Oscilloscope No substitute Requires precision BNC connectors DSO90000 Series Infiniium Oscilloscope Digital Multimeter 2 wire resistance accuracy 0 01 34401A A...

Page 216: ...nput Resistance Differential Test 1 Using the PV DS test board connect the positive and negative probe tips to the 34401A DMM NOTE Apply upward pressure to the clip to ensure proper electrical connection Figure 179 Probing Locations on PV Test Board for Differential Test ...

Page 217: ... Single ended Test 1 Using the PV DS test board connect the positive probe tip to the 34401A DMM as shown in Figure 180 on page 218 Connect the probe s amplifier body ground to the PV DS test board ground NOTE Apply upward pressure to the clip to ensure proper electrical connection 2 Read the 34401A display for the input resistance 3 Record the result in the performance test record later in this c...

Page 218: ... Locations on PV Test Board for Differential Test 4 Using the PV DS test board connect the negative probe trip to the DMM NOTE Apply upward pressure to the clip to ensure proper electrical connection 5 Connect the probe s amplifier body to ground on the PV DS test board as shown in Figure 181 on page 219 ...

Page 219: ...ion 7 To Test Input Resistance 1168A 9A Probe s User s Guide 219 Figure 181 Probing Locations on PV Test Board for Differential Test 6 Read the input resistance on the DMM Record the input resistance in Table 30 on page 220 ...

Page 220: ...mance Test Record Performance Test Record Table 30 Performance Test Record Model Date Tested by Serial Recommended next test date Test Test Limits Result Pass Fail Bandwidth 12 GHz 1169A 10 GHz 1168A Input Resistance 50 kW 2 Differential Mode 25 kW 2 Single ended Mode ...

Page 221: ...erential Solder In Probe Head 241 E2676A Single Ended Browser Probe Head 242 E2679A Single Ended Solder In Probe Head 243 This document contains SPICE models that can be used to predict the probe loading effects of the InfiniiMax II active probes Important points about these SPICE models are SPICE models shown here are only for input impedance which allows modeling of the probe loading effects Pro...

Page 222: ... Probe s User s Guide 8 SPICE Models An input impedance plot is given that shows the matching of the measured data to the modeled data Matching is generally very good up to the specified bandwidth of the probe head ...

Page 223: ...s User s Guide 223 N5381A and N5382A Probe Heads Rrtn or Zrtn is dependent on connection from DUT ground to Earth ground Most likely modeled by a parallel RL similar to Rom Lom Will have slight effect on single ended input Z and no effect on differential input Z ...

Page 224: ...cuit vplus connected to DUT plus signal vminus connected to DUT minus signal Input impedance is defined to be vplus vminus i vsplus SPICE Deck C2 44 40 27 6f Cm2 41 38 92f Cp2 43 36 92f Cp1 43 34 183f Cm1 41 31 183f C1 44 28 56 4f vsminus 16 vminus ACMag sweep 1 0 vsplus vplus 16 ACMag sweep 1 1 Lom2 47 0 2n Lom 43 0 30u L2 40 39 441n Lm2 38 37 1 47n Lp2 36 35 1 47n Lp1 34 33 4 07n Lm1 31 30 4 07n...

Page 225: ...PICE Models 8 N5381A and N5382A Probe Heads 1168A 9A Probe s User s Guide 225 Rc 16 15 0001 END Figure 182 Measured and Modeled Data Matching 10 6 10 7 10 8 10 9 10 10 10 2 10 3 10 4 10 5 Frequency Hz Ω ...

Page 226: ...plus i vsplus When using differential probe to probe differential signals Rc or Zc will depend on the DUT circuit vplus 1 RESISTANCE 100e6 100e6 sw tch 1u Rsw 1 AC 1 0 vsminus 1u Lom 25k Rm3 25k Rp3 5 731n Lm2 30 4 Rm2 40 93f Cm2 1 356n L1 1u Rrtn AC 1 0 vsplus 1u Rc DUT_Gnd 64 35 Rtipp 948 2 R1 14 75f C1 64 35 Rtipm 6 3f C2 36 88 R2 345 2p L2 556 5f Cm1 38 32 Rm1 3 815n Lm1 556 5f Cp1 38 32 Rp1 3...

Page 227: ..._N 40 93f Lp1 Cp1_N Lp1_N 3 815n Lp2 Cp2_N Lp2_N 5 731n Cm2 R1_N Cm2_N 40 93f vsminus vsplus_N vsminus_N AC 1 0 L1 C1_N L1_N 1 356n L2 C2_N L2_N 345 2p Rp1 Lp1_N Rp3_N 38 32 Cm1 R1_N Cm1_N 556 5f Rp2 Lp2_N Rp3_N 30 4 Rp3 Cp1_P Rp3_N 25k Rrtn DUT_Gnd 0 1u Rsw2 vminus 0 1 1u swtch 100e6 vsplus vplus vsplus_N AC 1 0 Rm2 Lm2_N Cp1_P 30 4 Rm3 R1_N Cp1_P 25k Rsw1 vminus vsminus_N 100e6 100e6 swtch 1u Lo...

Page 228: ...168A 9A Probe s User s Guide 8 SPICE Models N5425A ZIF Probe Head with N5426A ZIF Tip Attached Figure 183 Measured and Modeled Data Matching 10 6 10 7 10 8 10 9 10 10 10 1 10 2 10 3 10 4 10 5 Frequency H z Ω ...

Page 229: ...ANCE 1u sw tch 100e6 Rsw 2 360p Lom2 163 9 Rom 69f Cp2 23 9 Rp2 3 58n Lp2 3 1n Lp1 38 7 Rp1 180a Cp1 3 1n Lm1 38 7 Rm1 180a Cm1 2 68n L2 2m R2 109 4f C2 98 85 Rtipm 3 14f C1 451 7 R1 98 85 Rtipp DUT_Gnd 1u Rc AC 1 0 vsplus 1u Rrtn 9 62n L1 69f Cm2 23 9 Rm2 3 58n Lm2 34 5u Lom AC 1 0 vsminus 1 RESISTANCE 100e6 100e6 sw tch 1u Rsw 1 vplus ...

Page 230: ...s_N vsminus_N AC 1 0 L1 C1_N L1_N 9 62n L2 C2_N L2_N 2 68n Rp1 Lp1_N Rp3_N 38 7 Cm1 R1_N Cm1_N 180a Rp2 Lp2_N Rp3_N 23 9 Rrtn DUT_Gnd 0 1u Rsw2 vminus 0 1 RESISTANCE 1u swtch 100e6 vsplus vplus vsplus_N AC 1 0 Rm2 Lm2_N Cp1_P 23 9 Rsw1 vminus vsminus_N 1 RESISTANCE 100e6 100e6 swtch 1u Lom Cp1_P 0 34 5u C2 Rp3_N C2_N 109 4f Rm1 Lm1_N Cp1_P 38 7 Rc vsplus_N DUT_Gnd 1u C1 Rp3_N C1_N 3 14f Rtipm R1_N...

Page 231: ...SPICE Models 8 N5426A ZIF Tip 1168A 9A Probe s User s Guide 231 Figure 184 Measured and Modeled Data Matching 10 9 10 10 10 1 10 2 10 3 10 4 10 5 Frequency H z Ω ...

Page 232: ...232 1168A 9A Probe s User s Guide 8 SPICE Models N2887A N2888A Probe Heads N2887A N2888A Probe Heads Differential SPICE Input Impedance Model ...

Page 233: ...p1 3 17 174p lp1 3 4 1 843n rp1 4 5 9 309 cm1 8 9 174p lm1 9 10 1 843n rm1 10 17 9 309 c1 5 6 101p l1 6 7 2 844n r1 7 8 14 645 cp2 17 11 329p lp2 11 12 335n rp2 12 5 18 747 cm2 8 15 329p lm2 15 16 335n rm2 16 17 18 747 c2 5 13 00001p l2 13 14 505n r2 14 8 45 82 rp3 17 5 25k rm3 8 17 25k rom 17 18 3 82e 8 lom2 18 0 501n lom 17 0 20 5u ends ...

Page 234: ...ide 8 SPICE Models N2887A N2888A Probe Heads Single Ended SPICE Input Impedance Model subckt N2887A_SingleEnded 1 rtip 1 2 1e 12 rp1 2 3 12 480 lp1 3 4 1 525n cp1 4 0 407p rp2 2 5 24 445 lp2 5 6 2 285n cp2 6 0 140p rp3 2 0 25k ends ...

Page 235: ... out the damping resistor in the probe head model There is one SPICE schematic for the differential probe heads and one SPICE schematic for the single ended probe heads The schematics have parameterized R L and C values that are given in the SPICE deck for the specific probe head Additionally an input impedance plot is given that shows the matching of the measured data to the modeled data Matching...

Page 236: ...to Earth ground Most likely modeled by a parallel RL similar to Rom Lom Will have slight effect on single ended input Z and no effect on differential input Z Cgpl and Cgml represent C from probe tips to DUT ground near probe tips If using diff probe to probe single ended signals vplus connected to DUT signal vminus connected to DUT ground with means that Rc 0 and Zsrcm 0 Input impedance is defined...

Page 237: ...connected to DUT plus signal vminus connected to DUT minus signal Input impedance is defined to be vplus vminus i vsplus SPICE Model for Single Ended Probe Heads Figure 186 SPICE Model for Single Ended Probe Heads Rtn Zrtn is dependent on connection from DUT ground to Earth ground Most likely modeled by a parallel RL similar to Rom Lom Will have slight effect on input Z ...

Page 238: ...122 85 value cg1 2 Cgm2 84 122 value cg1 2 Cgm1 95 DUT_Ground value cg1 2 Cm1 99 95 value cm 2 Cgp3 86 122 value cg2 2 Cm2 85 84 value cm 2 Cgm4 122 vdom value cg2 2 Cgm3 122 87 value cg2 2 Cgp4 vdop 122 value cg2 2 Ctp vdop 88 value ct Ctm 89 vdom value ct Lm3 84 87 value l1 4 Lp3 86 85 value l1 4 Lm4 89 87 value l2 Lp4 86 88 value l2 Lp1 118 vplus value l1 4 Lp2 85 99 value l1 2 Lm1 vminus 117 v...

Page 239: ...f vsminus 164 vminus ACMag sweep 1 0 vsplus vplus 164 ACMag sweep 1 1 Cgp1 DUT_Ground 99 value cg1 2 Cgp2 122 85 value cg1 2 Cgm2 84 122 value cg1 2 Cgm1 95 DUT_Ground value cg1 2 Cm1 99 95 value cm 2 Cgp3 86 122 value cg2 2 Cm2 85 84 value cm 2 Cgm4 122 vdom value cg2 2 Cgm3 122 87 value cg2 2 Cgp4 vdop 122 value cg2 2 Ctp vdop 88 value ct Ctm 89 vdom value ct Lm3 84 87 value l1 4 Lp3 86 85 value...

Page 240: ...ue l1 4 Lp2 85 99 value l1 2 Lm1 vminus 117 value l1 4 Lm2 95 84 value l1 2 Lom 122 0 value lom Rrtn DUT_Ground 0 0001 Rc 164 DUT_Ground 0001 Rlossp 99 159 value rloss Rlossm 160 95 value rloss Rdp 159 118 value rd Rdm 117 160 value rd Rtm vdom 89 value rt Rtp 88 vdop value rt Rcxp vdop 122 50 Rcxm 122 vdom 50 Rom 122 0 value rom ...

Page 241: ...cg1 2 Cm1 99 95 value cm 2 Cgp3 86 122 value cg2 2 Cm2 85 84 value cm 2 Cgm4 122 vdom value cg2 2 Cgm3 122 87 value cg2 2 Cgp4 vdop 122 value cg2 2 Ctp vdop 88 value ct Ctm 89 vdom value ct Lm3 84 87 value l1 4 Lp3 86 85 value l1 4 Lm4 89 87 value l2 Lp4 86 88 value l2 Lp1 118 vplus value l1 4 Lp2 85 99 value l1 2 Lm1 vminus 117 value l1 4 Lm2 95 84 value l1 2 Lom 122 0 value lom Rrtn DUT_Ground 0...

Page 242: ...370f ct 200f ac dec 77 200k 19 7g options map vsplus 130 165 ACMag 1 Csg4 vsop 134 value cg2 2 Cstp vsop 131 value ct Csg2 138 139 value cg1 2 Csg3 132 134 value cg2 2 Csg1 137 136 value cg1 2 Lsp1 141 130 value l1 3 8 Lsp2 138 137 value l1 3 4 Lsg1 165 164 value l1 8 Lsg2 136 139 value l1 4 Lsom 134 0 value lom Lsp4 132 131 value l2 Lsp3 132 138 value l1 3 8 Lsg3 139 134 value l1 8 ...

Page 243: ...61 141 value rd Rstp 131 vsop value rt Rscxp vsop 134 50 Rsom 134 0 value rom E2679A Single Ended Solder In Probe Head Data for full bandwidth with 91W resistor param rd 91 rt 25k rom 250 rloss 25 l1 3n l2 5n lom 2u cg1 150f cg2 300f ct 200f ac dec 77 200k 19 7g options map vsplus 130 165 ACMag 1 Csg4 vsop 134 value cg2 2 Cstp vsop 131 value ct ...

Page 244: ...g1 2 Lsp1 141 130 value l1 3 8 Lsp2 138 137 value l1 3 4 Lsg1 165 164 value l1 8 Lsg2 136 139 value l1 4 Lsom 134 0 value lom Lsp4 132 131 value l2 Lsp3 132 138 value l1 3 8 Lsg3 139 134 value l1 8 Rtrn 165 0 0001 Rdummy 164 136 0001 Rslossp 137 161 value rloss Rdsp 161 141 value rd Rstp 131 vsop value rt Rscxp vsop 134 50 Rsom 134 0 value rom ...

Page 245: ... Parts E2675A Differential Browser Probe Head 246 E2677A Differential Solder In Probe Head 246 E2678A Differential Socketed Probe Head 247 E2679A Single Ended Solder in Probe Head 248 N5381A and N5382A Probe Heads 248 Other Accessories 249 ...

Page 246: ...ty Supplied Resistive tip blue 91Ω 01131 62107 20 Ergonomic handle 1 Table 32 E2670A Kit Description Qty Supplied 91Ω resistor for full bandwidth 20 150Ω resistor for medium bandwidth 10 91Ω resistor template 1 150Ω resistor template 1 Table 33 Resistors Description Qty Order From Vendor Orderable Part Number 91Ω resistor 1 BREL International RMB16 910 JB 150 Ω resistor 1 BREL International RMB16A...

Page 247: ... 160Ω damped wire accessory 6 82Ω resistor for full bandwidth 48 Socket for 25 mil 25 1000 inch square pins female on both ends 4 25 mil female socket w 20 mil round male pin on other end 4 Heatshrink socket accessory 4 Header adapter 91Ω 2 82Ω resistor template 1 Table 35 Resistors Description Qty Order From Vendor Orderable Part Number 82Ω resistor 1 Vishay MBA0204AC8209GC100 ...

Page 248: ...scription Qty Order From Vendor Orderable Part Number 0Ω resistor 1 BREL International RMB16 000 JB 91Ω resistor 1 BREL International RMB16 910 JB Table 37 Replacement Wire Description Qty Order Part Number 0 005 steel wire and trim gauge N5382A 1 01169 21304 0 007 tin plated nickel wire and trim gauge N5381A 1 01169 81301 0 005 tin plated nickel wire and trim gauge N5381A 1 01169 21306 ...

Page 249: ... 01130 21302 34 each Agilent E5381 82103 1 Header adapter kit for socketed differential probe head 01130 63201 10 each Agilent 01131 68703 1 Coupling tag for N5450B extreme temperature cable extension Agilent N5450 21201 1 SMA coaxial dc block Inmet 8037 1 SMA 6 dB coaxial attenuator Inmet 18AH 6 1 SMA 12 dB coaxial attenuator Inmet 18AH 12 1 SMA adjustable delay ATM Microwave P1907 1 GPO F to GPO...

Page 250: ...250 1168A 9A Probe s User s Guide 9 Replacement Parts Other Accessories ...

Page 251: ... environmental conditions 145 ergonomic handle 50 ESD tolerance 140 extreme temp 17 F full bandwidth probe 63 65 70 G general characteristics 145 H handle 50 humidity 145 I inspecting 11 N N1022A B adapter 10 N2880A attenuators 20 N2881A CD blocking caps 23 N2884A 56 using 84 N2887A 95 N2888A 95 N5380B 52 N5381A 46 N5382A 49 N5425A 54 N5426A 54 N5442A adapter 10 N5450B cable 17 N5451A 59 61 O offs...

Page 252: ...mation 34 safety warnings 34 service 37 single ended browser 72 single ended probe head 70 slew rate requirements 33 slew rates 33 socketed differential probe 65 74 solder in differential 63 solder in single ended probe 70 specifications 137 221 T temperature 145 temperature chamber 17 testing input resistance 215 V velcro dots 30 W WEEE compliance 138 weight 145 Z ZIF Tip soldering 79 ZIF tip N28...

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