Agilent Technologies 1168/9A User Manual
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Agilent Technologies 1168/9A User Manual

Agilent Technologies 1168/9A User Manual

Differential and single-ended probes
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Agilent 1168/9A
Differential and
Single-Ended Probes
User's Guide
Agilent Technologies

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Summary of Contents for Agilent Technologies 1168/9A

  • Page 1 Agilent 1168/9A Differential and Single-Ended Probes User’s Guide Agilent Technologies...
  • Page 2 Software is delivered and licensed as "Commercial computer software" as C A U T I O N . © Agilent Technologies, Inc. 2013 A CAUTION notice defined in DFAR 252.227-7014 (June 1995), denotes a hazard. It calls attention to No part of this manual may be reproduced in or as a "commercial item"...

  • Page 3: Table Of Contents

    N5451A Long-Wired ZIF Tips E2677A/9A Solder-In Probe Heads Calibrating Probes DC Gain and Offset Calibration Calibration for Solder-In and Socketed Probe Heads Calibration for Hand-Held Browser Probe Heads N2887A & N2888A Calibration and Deskew Procedure Characteristics and Specifications General 1168/9A Probes User’s Guide...
  • Page 4 N5425A ZIF Probe Head with N5426A ZIF Tip Attached N5426A ZIF Tip N2887A/N2888A Probe Heads InfiniiMax I Probe Heads Replacement Parts E2675A Differential Browser Probe Head E2677A Differential Solder-In Probe Head E2678A Differential Socketed Probe Head E2679A Single-Ended Solder-in Probe Head 1168/9A Probes User’s Guide...
  • Page 5 Contents N5381A and N5382A Probe Heads Other Accessories 1168/9A Probes User’s Guide...
  • Page 6 Contents 1168/9A Probes User’s Guide...
  • Page 7 The wires or probe tips in front of the resistors are long enough to allow easy connection but are short enough that any resonances caused by them are out of band and don't impact the input impedance. Agilent Technologies...

  • Page 8: Getting Started Introduction

    Getting Started Introduction Introduction Before you can use the probe, you must connect one of the available probe heads to an 1168/9A probe amplifier. Figure 1 Probe Amplifier with Attached Head Probe Heads Figure 2 on page 9 shows the available probe heads and accessories.
  • Page 9 Getting Started Introduction Figure 2 Available Probe Heads 1168/9A Probe’s User’s Guide...
  • Page 10 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. 1168/9A Probe’s User’s Guide...
  • Page 11 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 materials for the carrier’s inspection. The Agilent Technologies office will arrange for repair or replacement at Agilent Technologies’...

  • Page 12: Supplied Accessories

    Supplied Accessories Supplied Accessories Figure 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.

  • Page 13: Optional Probe Heads With Supplied Accessories

    Optional Probe Heads with Supplied Accessories Optional Probe Heads with Supplied Accessories The following optional InfiniiMax II probe heads (with accessories) can be ordered at the same time as 1168/9A probe amplifiers. The E2669A onnectivity kit, described on page 15 conveniently packages multiple InfiniiMax I probe heads and their accessories.
  • Page 14 0.005 steel wire and trim gauge 01169-21304 a Allows you to identify the accessory container in the probe case. Not orderable. N5425A ZIF Probe Head There are no accessories supplied with the N5425A or and N5426A ZIF Tip N5426A. 1168/9A Probe’s User’s Guide...

  • Page 15: Optional E2669A Differential Connectivity Kit And Accessories

    InfiniiMax I probe heads as shown in Figure 4. These probe heads allow full bandwidth probing of differential and single- ended signals. The kit can be ordered at the same time as 1168/9A probe amplifiers. Figure 4 E2669A Differential Connectivity Kit (not to scale) Table 4...
  • Page 16 Supplied Kit Accessories for the E2675A Probe Head Part Description Supplied Identification Resistive tip (blue), 91Ω 01131-62107 Ergonomic handle (p/n 01131-43201) — a Allows you to identify the accessory container in the probe case. Not orderable. 1168/9A Probe’s User’s Guide...

  • Page 17: Other Available Accessories

    To install the coupling tag, slip the small end of each cable through the holes in the tag. The tag can be positioned anywhere along the length of the cable and can withstand the temperature ranges specified. 1168/9A Probe’s User’s Guide...
  • Page 18 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. 1168/9A Probe’s User’s Guide...
  • Page 19 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 the quality of a measurement. 1168/9A Probe’s User’s Guide...
  • Page 20 Larger attenuation ratios will only degrade the noise performance and gain of the system. All InfiniiMax probe heads and amplifiers are compatible with the N2880A In- line attenuators. However, due to the N5380B dual- SMA probe head’s maximum input voltage 1168/9A Probe’s User’s Guide...
  • Page 21 Below are the frequency response plots for four setups: the probe without any attenuators, the probe with the 6 dB attenuators, the probe with the 12 dB attenuators, and the probe with the 20 dB attenuators. 1168/9A Probe’s User’s Guide...
  • Page 22 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 oscilloscope series. 1168/9A Probe’s User’s Guide...
  • Page 23 N2881A DC blocking caps in between the probe amplifier and the probe head as shown in Figure 6. The capacitors block out the DC component of the input signal (up to 30 Vdc). Figure 6 Blocking Caps Between Probe Amplifier and Head 1168/9A Probe’s User’s Guide...
  • Page 24 (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) 1168/9A Probe’s User’s Guide...

  • Page 25: Probe Handling

    Figure 8. There are also indentations on many of the probe head sockets so you have a convenient place to grasp there as well. Figure 8 Properly Pulling the Probe Head Straight Out 1168/9A Probe’s User’s Guide...
  • Page 26 10. Then continue to circle your thumb, but provide a slight twist with each rotation. This allows the cable rotations to lie flat against each other and will eliminate the net twisting of the cable in the end. 1168/9A Probe’s User’s Guide...
  • Page 27 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. 1168/9A Probe’s User’s Guide...
  • Page 28 Once strain relief has been provided, solder the probe tip to the circuit board and then plug the probe head into the probe amplifier. 1168/9A Probe’s User’s Guide...
  • Page 29 Getting Started Probe Handling Figure 12 Correct Securing Methods Figure 13 Incorrect Securing Method Because Glue is Placed on the Probe Head Tip 1168/9A Probe’s User’s Guide...

  • Page 30: Using The Velcro Dots

    Attach a Velcro dots to both the probe amplifier and the circuit board as shown in Figure 14 page 30. Figure 14 Using the Velcro Dots 1168/9A Probe’s User’s Guide...

  • Page 31: Using Offset With Infiniimax Active Probes

    For this case, the offset control on the oscilloscope controls head probing a single-ended the probe offset and the channel offset is set to zero. This signal allows the offset voltage to be subtracted from the input 1168/9A Probe’s User’s Guide...
  • Page 32 The channel offset allows the waveform seen on screen to be moved as desired. The allowable dc component in the plus and minus signals is determined by the common mode range of the probe. 1168/9A Probe’s User’s Guide...

  • Page 33: Slew Rate Requirements For Different Technologies

    Fibre Channel 2125 16.0 Gigabit Ethernet 1000Base-CX 15.5 RapidIO 8/16 2Gb 14.4 Infiniband 2.5Gb HyperTransport 1.6Gb SATA (1.5Gb) USB 2.0 DDR 200/266/333 AGP-8X a The probe specification is 25 V/ns b The probe specification is 40 V/ns 1168/9A Probe’s User’s Guide...

  • Page 34: Safety Information

    Connect the probe to the oscilloscope and connect the ground lead to earth ground before connecting the probe to the circuit under test. Disconnect the probe input and the probe ground lead from the circuit under test before disconnecting the probe from the oscilloscope. 1168/9A Probe’s User’s Guide...
  • Page 35 The probe cable is a sensitive part of the probe and, therefore, you should be careful not to damage it through excessive bending or pulling. Avoid any mechanical shocks to this product in order to guarantee accurate performance and protection. 1168/9A Probe’s User’s Guide...
  • Page 36 (normal blow, time delay, etc.) should be used. Do not use repaired fuses or short-circuited fuse holders. To do so could cause a shock or fire hazard. WARNING Capacitors inside the instrument may retain a charge even if the instrument is disconnected from its source of supply. 1168/9A Probe’s User’s Guide...

  • Page 37: Service

    If you are using the probe with an Infiniium oscilloscope, this should not be a problem. If you are using the probe with other test gear, ensure the probe is terminated into a low reflectivity 50Ω load (~ ±2%). 1168/9A Probe’s User’s Guide...
  • Page 38 Perform the following steps before shipping the probe back to Agilent Technologies for service. Contact your nearest Agilent sales office for information on obtaining an RMA number and return address.
  • Page 39 For technical assistance, contact your local Agilent Call Technologies Center. ■ In the Americas, call 1 (800) 829- 4444 ■ In other regions, visit http://www.agilent.com/find/assist Before returning an instrument for service, you must first call the Call Center at 1 (800) 829- 4444. 1168/9A Probe’s User’s Guide...
  • Page 40 Getting Started Service 1168/9A Probe’s User’s Guide...
  • Page 41 Graphs showing the performance of configurations are designed to give the best probe the heads are shown in Chapter performance for different probing situations. This allows you to quickly make the measurements you need with confidence in the performance and signal fidelity. Agilent Technologies...

  • Page 42: Using Probe Heads Recommended Configurations

    N5425A ZIF with N5426A ZIF Tip (Refer to page 54.) Full Bandwidth 0.33 0.53 Differential and Single-ended signals 1168A: >10 Solder-in with ZIF Tip connection 1169A: >12 Very small fine pitch target Slightly higher loading than solder-in probe head 1168/9A Probes User’s Guide...
  • Page 43 E2669A connectivity kit. Not all of these configurations will give the best probe performance of the 1168A and 1169A. The probe configurations are shown in the order of the best performance to the least performance. 1168/9A Probes User’s Guide...
  • Page 44 Solder-in hands free connection when physical size is critical Hard to reach targets Very small fine pitch targets E2676A Single-Ended Browser (Refer to page 72.) 0.65 Single-ended signals only Hand or probe holder where physical size is critical General purpose troubleshooting Ergonomic handle available 1168/9A Probes User’s Guide...
  • Page 45 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 1168/9A Probes User’s Guide...
  • Page 46 (or optional 5 mil) diameter nickel wires, which allow connection to very small, fine pitch targets. Figure 15 N5381A Table 12 Supplied Accessories Part Number Accessory Quantity 0.007 inch tin-plated nickel wire 01169-81301 0.005 inch tin-plated nickel wire 01169-21306 Trim Gauge — 1168/9A Probes User’s Guide...
  • Page 47 Adjusting Spacing Without Stressing Solder Joint NOTE When soldering in leads to the DUT always use plenty of flux. The flux will ensure a good, strong solder joint without having to use an excessive amount of solder. 1168/9A Probes User’s Guide...
  • Page 48 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. 1168/9A Probes User’s Guide...
  • Page 49 The N5382A comes with an ergonomic handle to aid in positioning the probe head. Figure 17 N5382A Table 13 Supplied Accessories Part Number Accessory Quantity Ergonomic Handle 01130-43202 0.005 inch tin-plated steel wire 01169-21304 Trim Gauge — 1168/9A Probes User’s Guide...
  • Page 50 Adjusting Spacing Without Stressing Solder Joint When holding the N5382A for extended periods of time, use the N5382A’s supplied ergonomic handle. Figure 19 page 51 and Figure 20 show how to mount the browser in the ergonomic handle. 1168/9A Probes User’s Guide...
  • Page 51 Using Probe Heads Recommended Configurations 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. 1168/9A Probes User’s Guide...
  • Page 52 Pulling on the probe amplifier cable or strain relief, or rocking the probe amplifier to remove it, may damage the probe head or probe amplifier. PERFORMANCE PLOTS. Refer to “N5380B SMA Probe Head (Full BW)” on page 152. 1168/9A Probes User’s Guide...
  • Page 53 Using Probe Heads Recommended Configurations 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 1168/9A Probes User’s Guide...
  • Page 54 79. Figure 23 N5426A ZIF Head with N5451A ZIF Tip Attached NOTE The N5425A ZIF probe head does not come with any ZIF probe tips. ZIF probe tips N5426A, N5451A, or N2884A must be separately ordered. 1168/9A Probes User’s Guide...
  • Page 55 Using Probe Heads Recommended Configurations PERFORMANCE PLOTS. Refer to “N5425A ZIF Probe Head (Full BW)” on page 161. 1168/9A Probes User’s Guide...
  • Page 56 NOTE To learn the proper method of using the N2884A tip, refer to “Using N2884A Fine-Wire ZIF tips” on page 84. Figure 24 Fine Wires on N2884A Tip 1168/9A Probes User’s Guide...
  • Page 57 Positioner arm when the case is closed Figure 25 N2884A Kit with Tine Wire ZIF Tips CAUTION Be very careful with the 22 micron tungsten wires as they are very easily damaged. 1168/9A Probes User’s Guide...
  • Page 58 Only turn on the device under test (DUT) when you have verified that the wires are not touching. 1168/9A Probes User’s Guide...
  • Page 59 The N5425A ZIF probe head does not come with any ZIF probe tips. ZIF probe tips N5426A, N5451A, or N2884A must be separately ordered. NOTE To solder a ZIF tip to your DUT, refer to “Soldering a ZIF Tip to a DUT” page 79. 1168/9A Probes User’s Guide...
  • Page 60 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 1168/9A Probes User’s Guide...
  • Page 61 The N5425A ZIF probe head does not come with any ZIF probe tips. ZIF probe tips N5426A, N5451A, or N2884A must be separately ordered. NOTE To solder a ZIF tip to your DUT, refer to “Soldering a ZIF Tip to a DUT” page 79. 1168/9A Probes User’s Guide...
  • Page 62 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 Breaking Off a Tip 1168/9A Probes User’s Guide...
  • Page 63 Because of the small size of the resistor leads, it is easy to solder them to very small geometry circuits. TO INSTALL OR REPAIR RESISTOR LEADS. Refer to “E2677A/9A Solder-In Probe Heads” on page 115. 1168/9A Probes User’s Guide...
  • Page 64 NOTE Cut resistors. Before using the resistors, the resistor wires must be cut to the correct dimensions. For the correct dimensions see “E2677A/9A Solder-In Probe Heads” on page 115 1168/9A Probes User’s Guide...
  • Page 65 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 TO INSTALL OR REPAIR RESISTOR LEADS. Refer to the information found in this section. 1168/9A Probes User’s Guide...
  • Page 66 32. Use tweezers, to place the resistor body inside the rectangle of the supplied trim gauge. Use diagonal cutters to trim the leads even with the trim lines. Figure 32 Resistor Trim Dimensions and Trim Guage 1168/9A Probes User’s Guide...
  • Page 67 The blue tips can easily be broken off if the browser is not used properly. Always hold the probe head so that the blue tips remain vertical during measurements as shown in Figure 1168/9A Probes User’s Guide...
  • Page 68 181. When holding the E2675A for extended periods of time, use the supplied ergonomic handle. Figure 35 Figure 36 show how to attach and remove the handle from the probe head. Figure 35 Inserting the Probe 1168/9A Probes User’s Guide...
  • Page 69 Using Probe Heads Recommended Configurations Figure 36 Removing the Probe 1168/9A Probes User’s Guide...
  • Page 70 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 “E2679A Single-Ended Solder-In Probe Head (High BW)” on page 196. 1168/9A Probes User’s Guide...
  • Page 71 CAUTION Strain relieve the micro coax leading away from the solder-in tips using hook-and-loop fasteners or adhesive tape to protect delicate connections. 1168/9A Probes User’s Guide...
  • Page 72 Refer to “E2676A Single-Ended Browser” page 184. When holding the E2675A for extended periods of time, use the supplied ergonomic handle. Figure 39 Figure 40 show how to attach and remove the handle from the probe head. 1168/9A Probes User’s Guide...
  • Page 73 Using Probe Heads Recommended Configurations Figure 39 Inserting the Probe into the Handle Figure 40 Removing the Probe from the Handle 1168/9A Probes User’s Guide...
  • Page 74 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 1168/9A Probes User’s Guide...
  • Page 75 Model for input C is Cm between the tips and Cg to ground each tip 0.54 pF Cdiff 0.70 pF Differential mode capacitance is Cm + Cg/2 0.97 pF Single-ended mode capacitance is Cm + Cg 1168/9A Probes User’s Guide...
  • Page 76 Using Probe Heads Recommended Configurations Figure 42 01130-63201 Header Adapter Dimensions 1168/9A Probes User’s Guide...
  • Page 77 0.086 in semi- rigid SMA cables that are formed in an offset configuration so that the spacing between the connection points can be easily adjusted. PERFORMANCE PLOTS. Refer to “E2695A SMA Probe Head” page 198. 1168/9A Probes User’s Guide...
  • Page 78 ■ Avoids probe loading effects since input is a well matched 50Ω termination. CAUTION The probe amplifier can become damaged unless you use the Agilent N5380-64701 SMA Head Support. 1168/9A Probes User’s Guide...

  • Page 79: Soldering A Zif Tip To A Dut

    ZIF tip pc board could flow and the lead would come off destroying the ZIF tip. Only the first third of the lead or so needs to be soldered to the target point. 1168/9A Probes User’s Guide...
  • Page 80 Solder Added to Target Points 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 1168/9A Probes User’s Guide...
  • Page 81 ZIF tip Positioned and Soldered In Place Open the ZIF tip latch, and remove ZIF probe head and leave ZIF tip behind for future connection. It is best to use a non- conductive, pointed object such as a toothpick or plastic 1168/9A Probes User’s Guide...
  • Page 82 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 the circuit is live, use plastic or non-conductive tweezers. 1168/9A Probes User’s Guide...
  • Page 83 Using Probe Heads Soldering a ZIF Tip to a DUT Figure 50 Use a Non-conductive Tool to Close the Latch 1168/9A Probes User’s Guide...

  • Page 84: Using N2884A Fine-Wire Zif Tips

    85. The fine wire ZIF tip should Positioner Arm not be connected to the N5425A ZIF probe head yet. NOTE The positioner arm is located inside the case with the five fine wire ZIF tips. 1168/9A Probes User’s Guide...
  • Page 85 (www.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) 1168/9A Probes User’s Guide...
  • Page 86 Head to Probe Amplifier will be extremely important that you are careful with the entire setup (so you do not crush or damage the wires). Therefore, it is usually easiest to connect the probe head to 1168/9A Probes User’s Guide...
  • Page 87 There is a cutout in the case’s lid that allows for these wires to not be bent when the lid is closed. If the wires are not pointed directly upward, they could become damaged when the lid is closed. 1168/9A Probes User’s Guide...
  • Page 88 Fine Wire ZIF tips). This is what the latch looks like when it is in the open position Zif tip ZIF Probe Head Figure 55 ZIF Tip Latch in Open Position 1168/9A Probes User’s Guide...
  • Page 89 15 x 15 microns and 10 microns deep. These wells keep the probe tip from slipping across the surface as they give a place for the wires to anchor. You may need to create many wells depending on the number of targets you 1168/9A Probes User’s Guide...
  • Page 90 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 is set first. 1168/9A Probes User’s Guide...
  • Page 91 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 the wires that could be detrimental to 1168/9A Probes User’s Guide...
  • Page 92 Do not land the longer wire too hard or you could damage it. Once you see it flex, stop moving in the z- direction and use the x- y knobs on the micropositioner 1168/9A Probes User’s Guide...
  • Page 93 Decrease the magnification of the microscope until you can see the entire length of both wires and ensure that the wires are not touching. 1168/9A Probes User’s Guide...
  • Page 94 Step 9. Configuring the You should select the N5425A probe head in the probe menu Correct Settings on Your on your oscilloscope when using the Fine Wire ZIF tip. You Oscilloscope are now ready to acquire a signal. 1168/9A Probes User’s Guide...

  • Page 95: N2887A/8A Soft Touch Probe Heads

    GPO connectors. A total of 36 or 18 GPO connectors is necessary to support the possible configurations probe heads. Figure 62 Soft Touch Head Connected to Probe Amplifier PERFORMANCE PLOTS. Refer to “N2887A/N2888A Soft Touch Probe Heads” on page 199. 1168/9A Probes User’s Guide...
  • Page 96 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 1168/9A Probes User’s Guide...
  • Page 97 < 0.5 pF Single-ended Input Impedance 25 kW Differential Input Impedance 50 kW Channel to Channel Coupling < –35 dB to 1.7 GHz, < –20 dB to 4 GHz Channel to Channel Skew < 15 ps 1168/9A Probes User’s Guide...
  • Page 98 Permissible surface finishes on pad are HASL, immersion silver, or gold over nickel. ➍ Footprint is compatible with retention model E5405- 68702. ➎ Plated through hole should not be tied to ground plane for thermal relief. 1168/9A Probes User’s Guide...
  • Page 99 Using Probe Heads N2887A/8A Soft Touch Probe Heads Figure 65 N2887A Footprint Dimensions 1168/9A Probes User’s Guide...
  • Page 100 ➎ Retention module dimensions are 20.04 mm x 6.99 mm x 4.95 mm tall relative to the top surface of the PCB. Retention pins extend 27.18mm beyond the bottom surface of the RM through the PCB. 1168/9A Probes User’s Guide...
  • Page 101 8 dedicated ground connections. This is shown in Figure 68 on page 103. You can define the arrangement of signals (differential, single- ended, clocks). The signal and ground connections of the N2887A are arranged so they are compatible with the Agilent 1168/9A Probes User’s Guide...
  • Page 102 (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 1168/9A Probes User’s Guide...
  • Page 103 Using Probe Heads N2887A/8A Soft Touch Probe Heads Figure 68 Pin Outs for N2888A Soft Touch Half-Channel 1168/9A Probes User’s Guide...
  • Page 104 Using Probe Heads N2887A/8A Soft Touch Probe Heads 1168/9A Probes User’s Guide...

  • Page 105: Maintaining Probe Heads

    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 single- ended solder- in probe head Agilent Technologies...

  • Page 106: N5381/2A Probe Heads

    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 equivalent) Flush cutting wire cutters Magnifier or low power microscope Agilent supplied trim gauge (01169-23801) 1168/9A Probes User’s Guide...
  • Page 107 The solder joint has very low thermal mass, so the joint quickly melts and releases the wire. NOTE Make sure soldering iron tip is free of excess solder. 1168/9A Probes User’s Guide...
  • Page 108 The thermal mass 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. Cut the wires that protrude on the bottom side of the probe head board even with the solder pad. 1168/9A Probes User’s Guide...
  • Page 109 Place the wires through the hole in the trim gauge with the probe head perpendicular to the trim gauge. Trim Gauge Figure 72 Trim Guage on Probe Head Cut the wires even with the trim gauge on the side opposite of the probe head. 1168/9A Probes User’s Guide...
  • Page 110 Maintaining Probe Heads N5381/2A Probe Heads Figure 73 Cutting Wires Flush with Gauge When replacing wires on the N5382A Browser, bend the wires down at about a 30° angle. Figure 74 Wires Bent 30° 1168/9A Probes User’s Guide...

  • Page 111: N5451A Long-Wired Zif Tips

    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 template. 1168/9A Probes User’s Guide...
  • Page 112 The solder joint has very low thermal mass, so the joint quickly melts and releases the wire. NOTE Make sure soldering iron tip is free of excess solder. 1168/9A Probes User’s Guide...
  • Page 113 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 hole. Figure 81 1168/9A Probes User’s Guide...
  • Page 114 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 1168/9A Probes User’s Guide...

  • Page 115: E2677A/9A Solder-In Probe Heads

    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 equivalent) Diagonal cutters Magnifier or low power microscope Agilent supplied trim gauge (01131-94311) 1168/9A Probes User’s Guide...
  • Page 116 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 mass, so the joint quickly melts and releases the wire. 1168/9A Probes User’s Guide...
  • Page 117 Using the X- acto knife, trim the leads even with the trim lines. Place resistor body inside the rectangle of the bend template. Using another pair of tweezers, bend the 1.90 mm or 8.89 mm lead 90° as shown in Figure 84 Figure 1168/9A Probes User’s Guide...
  • Page 118 (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 1168/9A Probes User’s Guide...
  • Page 119 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 soldered in is not important. 1168/9A Probes User’s Guide...
  • Page 120 Maintaining Probe Heads E2677A/9A Solder-In Probe Heads 1168/9A Probes User’s Guide...

  • Page 121: Calibrating Probes

    N2887A & N2888A Calibration and Deskew Procedure 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. Agilent Technologies...

  • Page 122: Dc Gain And Offset Calibration

    Infiniium probe calibration routine. When the probe has been calibrated, the dc gain, offset zero, and offset gain will be calibrated. The degree of accuracy specified at the probe tip is dependent on the oscilloscope system specifications. 1168/9A Probes User’s Guide...

  • Page 123: Calibration For Solder-In And Socketed Probe Heads

    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 deskew fixture. The negative probe head resistor lead or ground lead must 1168/9A Probes User’s Guide...
  • Page 124 Set the horizontal position to approximately 3 ns. You should see a waveform similar to that in Figure If you see a waveform similar to that of Figure 88, then you have a bad connection and should check all of your probe connections. 1168/9A Probes User’s Guide...
  • Page 125 Calibrating Probes Calibration for Solder-In and Socketed Probe Heads Figure 86 Connecting the Probe and Deskew Fixture 1168/9A Probes User’s Guide...
  • Page 126 Calibrating Probes Calibration for Solder-In and Socketed Probe Heads Figure 87 Good Connection Figure 88 Bad Connection 1168/9A Probes User’s Guide...
  • Page 127 Agilent 54855- 61620 calibration cable (Infiniium oscilloscopes with bandwidths of 6 GHz and greater only) ■ Agilent 54855- 67604 precision 3.5 mm adaptors (Infiniium oscilloscopes with bandwidths of 6 GHz and greater only) ■ Deskew fixture 1168/9A Probes User’s Guide...
  • Page 128 For the socketed probe head, insert two properly trimmed 82 Ω resistors NOTE into the sockets. 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. 1168/9A Probes User’s Guide...
  • Page 129 BNC cable from the pull- down menu. Select the Probes... button. Select the Configure Probe System button. Select User Defined Probe from the pull- down menu. Select the Calibrate Probe... button. Select the Calibrated Skew radio button. 1168/9A Probes User’s Guide...
  • Page 130 Select the Setup menu choose Acquisition... from the pull- down menu. In the Acquisition Setup dialog box enable averaging. When you close the dialog box, you should see waveforms similar to that in Figure Figure 90 Overlapping Waveforms 1168/9A Probes User’s Guide...

  • Page 131: Calibration For Hand-Held Browser Probe Heads

    The negative resistor tip or ground pin of the browser must be on either of the two outside conductors (ground) of the deskew fixture. On the Infiniium oscilloscope in the Setup menu, select the channel connected to the probe. 1168/9A Probes User’s Guide...
  • Page 132 Once the vertical calibration has successfully completed, select the Calibrated Skew... button. Select the Start Skew Calibration... button and follow the on- screen instructions for the skew calibration. Figure 91 Placing the Probe on the Fixture 1168/9A Probes User’s Guide...

  • Page 133: N2887A & N2888A Calibration And Deskew Procedure

    C. If this is not the case, calibrate the oscilloscope before calibrating ± the probe. This information is found in the Infiniium Calibration dialog box. 1168/9A Probes User’s Guide...
  • Page 134 Connect one of the leads from the probe head to the positive terminal on the InfiniiMax probe amplifier. The lead you will use depends on whether you are using the N2887A or N2888A probe head: 1168/9A Probes User’s Guide...
  • Page 135 InfiniiMax amplifier that will be used. NOTE Once you have the probe head connected correctly, perform a normal probe calibration as described in the Infiniium help system available on the oscilloscope. 1168/9A Probes User’s Guide...
  • Page 136 Calibrating Probes N2887A & N2888A Calibration and Deskew Procedure 1168/9A Probes User’s Guide...

  • Page 137: Characteristics And Specifications

    General InfiniiMax II Series with N5380B SMA Probe Head Environmental Probe Dimensions 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. Agilent Technologies...

  • Page 138: General

    Characteristics and Specifications General General CAT I: Secondary Circuits WARNING Do not use the probe for measurements within measurement categories II, III and IV. WEEE Compliance This product complies with the WEEE Directive (2002/96/EC) marking requirements. The affixed label indicates that you must not discard this electrical/electronic product in domestic household waste.
  • Page 139 Characteristics and Specifications General Table 23 Characteristics (Typical Performance) (Sheet 1 of 2) Description Item Characteristic Bandwidth (–3 dB) 1168A with DSO/DSA90804A 8 GHz 1168A with DSO81004A 10 GHz 1168A with DSO/DSA91204A 12 GHz 1169A with DSO/DSA91304A 13 GHz Rise and Fall Time (10% to 90%) 1168A 48 ps 1169A...
  • Page 140 Characteristics and Specifications General Table 23 Characteristics (Typical Performance) (Sheet 2 of 2) Description Item Characteristic Maximum Signal Slew Rate (SR 25 V/ns When probing a single-ended signal 40 V/ns When probing a differential signal DC Attenuation @ 3.45:I Zero Offset Error Referred to Input <...

  • Page 141: Infiniimax Ii Series With N5380B Sma Probe Head

    Characteristics and Specifications InfiniiMax II Series with N5380B SMA Probe Head 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. 1168A/9A Probe’s User’s Guide...
  • Page 142 Characteristics and Specifications InfiniiMax II Series with N5380B SMA Probe Head N5380A SMA Probe Head C=.4 pF Port Port comp1 comp2 PosIn PosOut R=14.4 Ohm R=12.4k Surgx1 R=221 Ohm R=50 Ohm Bypass1 Bypass2 Ferrite1 Ferrite2 To 50ohm inputs of probe amplifier Port CM_Term Ships w ith shorting...
  • Page 143 Characteristics and Specifications InfiniiMax II Series with N5380B SMA Probe Head Table 24 Characteristics 1168A Item 1169A Bandwidth >12GHz > 10GHz Probe only rise and fall times 27.5 ps (20% to 80%) 27.5 ps (20% to 80%) 40 ps (10% to 90%) 40 ps (10% to 90%) System rise and fall times With DSO/DSA91304A:...
  • Page 144 Characteristics and Specifications InfiniiMax II Series with N5380B SMA Probe Head Figure 93 N5380B SMA Probe Head Simplified Schematic 1168A/9A Probe’s User’s Guide...

  • Page 145: Environmental

    Characteristics and Specifications Environmental Environmental The following general characteristics apply to the active probe. Table 25 Environmental Characteristics Environmental Conditions Operating Non-Operating Temperature 5 °C to +40 °C –40 °C to +70 °C Humidity up to 95% relative humidity up to 90% relative humidity at +65 °C (non-condensing) at +40 °C Altitude Up to 4,600 meters...

  • Page 146: Probe Dimensions

    Characteristics and Specifications Probe Dimensions Probe Dimensions Figure 94 Probe Amplifier Dimensions 1168A/9A Probe’s User’s Guide...
  • Page 147 Characteristics and Specifications Probe Dimensions Figure 95 N5381A and N5382A Probe Head Dimensions Figure 96 01131-62103 Solder-in Differential Probe Head Dimensions 1168A/9A Probe’s User’s Guide...
  • Page 148 Characteristics and Specifications Probe Dimensions Figure 97 N5425A ZIF Probe Head Dimensions with ZIF Tip Attached 1168A/9A Probe’s User’s Guide...
  • Page 149 Characteristics and Specifications Probe Dimensions Figure 98 N5451A ZIF Probe Head Dimensions with Long Wired ZIF Tip Attached 1168A/9A Probe’s User’s Guide...
  • Page 150 Characteristics and Specifications Probe Dimensions 1168A/9A Probe’s User’s Guide...

  • Page 151: Performance Plots

    E2677A Differential Solder-in Probe Head (High BW) E2678A Differential Socketed Probe Head (High BW) E2678A Differential Socketed Probe Head w/ Damped Wire E2679A Single-Ended Solder-In Probe Head (High BW) E2695A SMA Probe Head N2887A/N2888A Soft Touch Probe Heads Agilent Technologies...

  • Page 152: N5380B Sma Probe Head (Full Bw)

    Performance Plots N5380B SMA Probe Head (Full BW) N5380B SMA Probe Head (Full BW) The following performance characteristic plots are for the 1168A and 1169A probes using N5380B probe head. NOTE Unless otherwise noted, time and frequency responses shown here are for the probe only.
  • Page 153 Performance Plots N5380B SMA Probe Head (Full BW) 0.55 Vout 0.45 tr 10-90% = 60 ps tr20-80% = 40 ps 0.35 Volts 0.25 Vincident tr10-90% = 57 ps 0.15 tr20-80% = 38 ps 0.05 -0.05 Time (Seconds) x 10 Figure 100 Vincident and Vout of probe with a 57 ps step BW(-3 dB) = 12.6 GHz Frequency (Hz) Figure 101 Magnitude plot of differential insertion loss +6.8 dB...
  • Page 154 Performance Plots N5380B SMA Probe Head (Full BW) Frequency (Hz) Figure 102 Magnitude plot of differential return loss Frequency (Hz) Figure 103 Magnitude plot of common mode response +6.8dB (common mode rejection) 1168A/9A Probe’s User’s Guide...

  • Page 155: N5380B Sma Probe Head With The 1134A Infiniimax Probe

    Performance Plots N5380B SMA Probe Head with the 1134A InfiniiMax Probe N5380B SMA Probe Head with the 1134A InfiniiMax Probe The following performance characteristic plots are for the 1134A probe using N5380B probe head. 0.45 0.35 Vincident 0.25 Vout tr10-90% = 90 ps V olts tr10-90% = 88.5 ps tr20-80% = 60 ps...

  • Page 156: N5381A & N5382A Differential Probe Heads (Full Bw)

    Performance Plots N5381A & N5382A Differential Probe Heads (Full BW) N5381A & N5382A Differential Probe Heads (Full BW) The following performance characteristic plots are 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.
  • Page 157 Performance Plots N5381A & N5382A Differential Probe Heads (Full BW) Vsource tr10-90% = 58 ps 0.15 tr20-80% = 37 ps tr10-90% = 65 ps Volts tr20-80% = 40 ps 0.05 -0.05 Time (Seconds) x 10 Figure 107 25W 58 ps step generator with and without probe connected Vout tr 10-90% = 67 ps tr20-80% = 44 ps...
  • Page 158 Performance Plots N5381A & N5382A Differential Probe Heads (Full BW) Vout/Vin BW(-3 dB) = 13 GHz Vout Frequency (Hz) Figure 109 dB(Vin) and dB(Vout) + 10.8 dB of probe with a 25W source and dB(Vout/Vin) + 10.8 dB frequen- cy response Frequency (Hz) Figure 110 dB(Vout/Vin) + 10.8 dB frequency response when inputs driven in common (common mode rejec- tion)
  • Page 159 Performance Plots N5381A & N5382A Differential Probe Heads (Full BW) 50 k Differential Mode Input Single-ended Mode Input 25 k 0.21 pF Zmin = 203.1 0.35 pF Ω Zmin = 164.3 Frequency (Hz) Figure 111 Magnitude plot of probe input impedance versus frequency 1168A/9A Probe’s User’s Guide...

  • Page 160: N5381A Differential Solder-In Probe Head With 2X Longer Wires

    Performance Plots N5381A Differential Solder-in Probe Head with 2x Longer Wires N5381A Differential Solder-in Probe Head with 2x Longer Wires The following performance characteristic plots are for the 1169A probe using N5381A probe head. The plot shows the probe response to a 25Ù, 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.

  • Page 161: N5425A Zif Probe Head (Full Bw)

    Performance Plots N5425A ZIF Probe Head (Full BW) N5425A ZIF Probe Head (Full BW) The following performance characteristic plots are for the 1168A and 1169A probes using N5425A probe head. NOTE Unless otherwise noted, time and frequency responses shown here are for the probe only.
  • Page 162 Performance Plots N5425A ZIF Probe Head (Full BW) Vsource tr10-90% = 58 ps tr20-80% = 39 ps V olts tr10-90% = 70 ps tr20-80% = 46 ps -0.2 Tim e (Seconds) x 10 Figure 114 25W 58 ps step with and without the probe connected Vout tr 10-90% = 67 ps V olts...
  • Page 163 Performance Plots N5425A ZIF Probe Head (Full BW) Vout/Vin Vout BW(-3 dB) = 12.3 GHz Frequency (H z) Figure 116 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 Frequency (H z) Figure 117 dB(Vout/Vin) + 10.8 dB frequency response when inputs driven in common (common mode rejec- tion)
  • Page 164 Performance Plots N5425A ZIF Probe Head (Full BW) 50 k Differential Mode Input Single-ended Mode Input 25 k 0.33 pF Ω Zmin = 222 0.53 pF Zmin = 168 Frequency (H z) Figure 118 Magnitude plot of probe input impedance versus frequency 1168A/9A Probe’s User’s Guide...

  • Page 165: N5425A Zif Probe Head With N5451A Long-Wired Zif Tip

    Performance Plots N5425A ZIF Probe Head with N5451A Long-Wired ZIF Tip N5425A ZIF Probe Head with N5451A Long-Wired ZIF Tip The following performance characteristic 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.
  • Page 166 Performance Plots N5425A ZIF Probe Head with N5451A Long-Wired ZIF Tip 7 mm Leads with 0° Separation Vsource tr10-90% = 71 ps tr20-80% = 48 ps V olts tr10-90% = 88 ps 0.15 tr20-80% = 55 ps 0.05 -0.05 Tim e (Seconds) x 10 Figure 119 25W 71 ps step generator with and without the probe connected Vout...
  • Page 167 Performance Plots N5425A ZIF Probe Head with N5451A Long-Wired ZIF Tip Vout/Vin Vout BW(-3dB) = 9.9 GHz Figure 121 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 Frequency (H z) Figure 122 dB(Vout/Vin) +10.8 dB frequency response when inputs driven in common (common mode rejec- tion)
  • Page 168 Performance Plots N5425A ZIF Probe Head with N5451A Long-Wired ZIF Tip 25 k Ω 0.6 pF Zmin = 156 Frequency (H z) Figure 123 Magnitude plot of probe input impedance versus frequency (single ended mode input) 1168A/9A Probe’s User’s Guide...
  • Page 169 Performance Plots N5425A ZIF Probe Head with N5451A Long-Wired ZIF Tip 7 mm Leads with 60° Separation The following graphs are for 7 mm long leads with 60° separation between the resistor leads. Vsource tr10-90% = 167 ps V olts 0.15 tr10-90% = 193 ps 0.05...
  • Page 170 Performance Plots N5425A ZIF Probe Head with N5451A Long-Wired ZIF Tip Vout tr10-90% = 172 ps V olts 0.15 tr10-90% = 193 ps 0.05 -0.05 Tim e (Seconds) x 10 Figure 125 Vout and Vin of probe with a 25W 167 ps step generator Vout/Vin Vout BW(-3dB) = 4.4 GHz...
  • Page 171 Performance Plots N5425A ZIF Probe Head with N5451A Long-Wired ZIF Tip Frequency (H z) Figure 127 dB(Vout/Vin) + 10.8 dB frequency response when inputs driven in common (common mode rejec- tion). 1168A/9A Probe’s User’s Guide...
  • Page 172 Performance Plots N5425A ZIF Probe Head with N5451A Long-Wired ZIF Tip 25 kΩ Ω 0.58 pF Zmin = 169 Frequency (H z) Figure 128 Magnitude plot of probe input impedance versus frequency (single-ended mode input) 1168A/9A Probe’s User’s Guide...
  • Page 173 Performance Plots N5425A ZIF Probe Head with N5451A Long-Wired ZIF Tip 11 mm Leads with 0° Separation The following graphs are for 11 mm long leads with 0° separation between the resistor leads. Vsource tr10-90% = 152 ps tr20-80% = 104 ps V olts 0.15 tr10-90% = 180 ps...
  • Page 174 Performance Plots N5425A ZIF Probe Head with N5451A Long-Wired ZIF Tip Vout tr10-90% = 161 ps V olts 0.15 tr10-90% = 180 ps 0.05 -0.05 Tim e (Seconds) x 10 Figure 130 Vin and Vout of probe with a 25W 152 ps step generator 1168A/9A Probe’s User’s Guide...
  • Page 175 Performance Plots N5425A ZIF Probe Head with N5451A Long-Wired ZIF Tip Vout/Vin Vout BW(-3dB) = 5 GHz Frequency (H z) Figure 131 dB(Vin) and dB(Vout) + 10.8 dB of probe with a 25W source and dB(Vout/Vin) + 10.8 dB frequen- cy response Frequency (H z) Figure 132 dB(Vout/Vin) + 10.8 dB frequency response when inputs driven in common (common mode rejec-...
  • Page 176 Performance Plots N5425A ZIF Probe Head with N5451A Long-Wired ZIF Tip 25 k Ω 0.68 pF Zmin = 160 Fre que ncy (H z ) Figure 133 Magnitude plot of probe input impedance versus frequency (single-ended mode input) 1168A/9A Probe’s User’s Guide...
  • Page 177 Performance Plots N5425A ZIF Probe Head with N5451A Long-Wired ZIF Tip 11 mm Leads with 60° Separation The following graphs are for 11 mm long leads with 60° separation between the resistor leads. Vsource tr10-90% = 226 ps V olts 0.15 tr10-90% = 254 ps 0.05...
  • Page 178 Performance Plots N5425A ZIF Probe Head with N5451A Long-Wired ZIF Tip Vout/Vin BW(-3dB) = 3.3 GHz Frequency (H z) Vout Figure 136 dB(Vin) and dB(Vout) + 10.8 dB of probe with a 25W source and dB(Vout/Vin) + 10.8 dB frequen- cy response Frequency (H z) Figure 137 dB(Vout/Vin) + 10.8 dB frequency response when inputs driven in common (common mode rejec-...
  • Page 179 Performance Plots N5425A ZIF Probe Head with N5451A Long-Wired ZIF Tip 25 k Ω 0.68 pF Vmin = 160 Frequency (H z ) Figure 138 Magnitude plot of probe input impedance versus frequency (single-ended mode input) 1168A/9A Probe’s User’s Guide...

  • Page 180: N5426A Zif Probe Tip Impedance

    Performance Plots N5426A ZIF Probe Tip Impedance N5426A ZIF Probe Tip Impedance The impedance plot shown in Figure 139 is of the ZIF probe tip without the probe head connected. Ω 50 k Differential Mode Input Zmin = 177 143 fF Single-ended Mode Input 25 k 181 fF...

  • Page 181: E2675A Differential Browser

    Performance Plots E2675A Differential Browser E2675A Differential Browser The following performance characteristic plots are for the 1169A probe using E2675A probe head. Vsource tr10-90% = 136 ps tr20-80% = 90 ps 0.15 tr10-90% = 160 ps V olts 0.05 -0.05 Time (Seconds) x 10 Figure 140 25W 136 ps step generator with and without probe connected...
  • Page 182 Performance Plots E2675A Differential Browser Vout/Vin Vout BW(-3 dB) = 5.2 GHz Frequency (Hz) 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 1168A/9A Probe’s User’s Guide...
  • Page 183 Performance Plots E2675A Differential Browser 50 k Differential Mode Input Single-ended Mode Input 25 k 0.32 pF Zmin = 229.2 0.57 pF Ω Zmin = 153.4 Frequency (H z) Figure 143 Magnitude plot of probe input impedance versus frequency 1168A/9A Probe’s User’s Guide...

  • Page 184: E2676A Single-Ended Browser

    Performance Plots E2676A Single-Ended Browser E2676A Single-Ended Browser The following performance characteristic plots are for the 1169A probe using E2676A probe head. Vsource tr10-90% = 136 ps 0.15 tr20-80% = 90 ps tr10-90% = 174 ps tr20-80% = 109 ps V olts 0.05 -0.05...
  • Page 185 Performance Plots E2676A Single-Ended Browser Vout tr 10-90% = 152 ps tr20-80% = 102 ps 0.15 Volts tr10-90% = 174 ps 0.05 tr20-80% = 109 ps -0.05 Time (Seconds) x 10 Figure 145 Vin and Vout of probe with a 25W 100 ps step generator Vout/Vin Vout BW(–3 dB) = 6 GHz...
  • Page 186 Performance Plots E2676A Single-Ended Browser NOTE The ground inductance and structure of the E2676A Single-ended Browser causes a 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 –...

  • Page 187: E2677A Differential Solder-In Probe Head (High Bw)

    Performance Plots E2677A Differential Solder-in Probe Head (High BW) E2677A Differential Solder-in Probe Head (High BW) The following performance characteristic plots are for the 1169A probe using E2677A probe head. NOTE For solder-in applications, the N5381A probe head is preferred. Variations in the manufacture and positioning of the mini-axial lead resistors used with the E2677A cause variations in the response.
  • Page 188 Performance Plots E2677A Differential Solder-in Probe Head (High BW) Vout tr 10-90% = 73 ps 0.15 tr10-90% = 66 ps V olts tr20-80% = 40 ps 0.05 -0.05 Time (Seconds) x 10 Figure 149 Vin and Vout of probe with a 25W 58 ps step generator Vout/Vin Vout BW(-3 dB) = 12.7 GHz...
  • Page 189 Performance Plots E2677A Differential Solder-in Probe Head (High BW) 50 k Differential Mode Input Single-ended Mode Input 25 k 0.27 pF Zmin = 272.8 0.44 pF pF Ω Zmin = 201.8 Frequency (H z) Figure 151 Magnitude plot of probe input impedance versus frequency 1168A/9A Probe’s User’s Guide...

  • Page 190: E2678A Differential Socketed Probe Head (High Bw)

    Performance Plots E2678A Differential Socketed Probe Head (High BW) E2678A Differential Socketed Probe Head (High BW) The following performance characteristic plots are for the 1169A probe using E2678A probe head. Vsource tr10-90% = 58 ps tr20-80% = 37 ps 0.15 tr10-90% = 68 ps Volts 0.05...
  • Page 191 Performance Plots E2678A Differential Socketed Probe Head (High BW) Vout/Vin Vout Frequency (Hz) 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 1168A/9A Probe’s User’s Guide...
  • Page 192 Performance Plots E2678A Differential Socketed Probe Head (High BW) 50 k Differential Mode Input Single-ended Mode Input 25 k 0.34 pF Zmin = 234.9 Ω 0.56 pF Zmin = 174.6 Frequency (H z) Figure 155 Magnitude plot of probe input impedance versus frequency 1168A/9A Probe’s User’s Guide...

  • Page 193: E2678A Differential Socketed Probe Head W/ Damped Wire

    Performance Plots E2678A Differential Socketed Probe Head w/ Damped Wire E2678A Differential Socketed Probe Head w/ Damped Wire The following performance characteristic plots are for the 1169A probe using E2678A probe 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.
  • Page 194 Performance Plots E2678A Differential Socketed Probe Head w/ Damped Wire tr10-90% = 334 ps tr20-80% = 217 ps 0.15 Vout tr 10-90% = 464 ps Volts tr20-80% = 294 ps 0.05 -0.05 Time (Seconds) x 10 Figure 157 Vin and Vout of probe with a 25W 295 ps step generator Vout/Vin Vout Frequency (Hz)
  • Page 195 Performance Plots E2678A Differential Socketed Probe Head w/ Damped Wire 50 k Differential Mode Input Single-ended Mode Input 0.63 pF 25 k Zmin = 344.0 0.95 pF Ω Zmin = 248.9 Frequency (H z) Figure 159 Magnitude plot of probe input impedance versus frequency 1168A/9A Probe’s User’s Guide...

  • Page 196: E2679A Single-Ended Solder-In Probe Head (High Bw)

    Performance Plots E2679A Single-Ended Solder-In Probe Head (High BW) E2679A Single-Ended Solder-In Probe Head (High BW) The following performance characteristic plots are for the 1169A probe using E2679A probe head. Vsource tr10-90% = 136 ps tr20-80% = 90 ps 0.15 tr10-90% = 163 ps Volts 0.05...
  • Page 197 Performance Plots E2679A Single-Ended Solder-In Probe Head (High BW) Vout/Vin BW(-3 dB) = 5.2 GHz Vout Frequency (Hz) Figure 162 dB(Vin) and dB(Vout) + 10.8 dB of probe with a 25W source and dB(Vout/Vin) + 10.8 dB frequen- cy response 25 k Ω...

  • Page 198: E2695A Sma Probe Head

    Performance Plots E2695A SMA Probe Head E2695A SMA Probe Head The following performance characteristic plots are for the 1169A probe using E2695A probe head. Vincident tr10-90% = 90 ps Vout tr20-80% = 60 ps tr10-90% = 94.5 ps tr20-80% = 63 ps V olts -0.1 Time (Seconds)

  • Page 199: N2887A/N2888A Soft Touch Probe Heads

    Performance Plots N2887A/N2888A Soft Touch Probe Heads N2887A/N2888A Soft Touch Probe Heads The following performance characteristic plots are for the 1169A probe 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.
  • Page 200 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) 1168A/9A Probe’s User’s Guide...
  • Page 201 Performance Plots N2887A/N2888A Soft Touch Probe Heads Figure 169 Frequency response, N2887A with an 1169A 12 GHz amplifier (red = differential, blue = sin- gle-ended) 1168A/9A Probe’s User’s Guide...
  • Page 202 Performance Plots N2887A/N2888A Soft Touch Probe Heads 1168A/9A Probe’s User’s Guide...

  • Page 203: Performance Verification

    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. Agilent Technologies...

  • Page 204: To Test Bandwidth

    Performance Verification To Test Bandwidth To Test Bandwidth This test ensures that the probe meets its specified bandwidth. Table 26 Bandwidth Probe Specification 1169A > 12 GHz 1168A > 10 GHz Table 27 Required Test Equipment Test Equipment Critical Specification Model Number Vector Network Analyzer (VNA) 13 GHz sweep range full 2 port cal Option...
  • Page 205 Performance Verification To Test Bandwidth Using the 8720ES VNA To test bandwidth, follow these guidelines when using the successfully Vector Network Analyzer. ■ Sometimes it may take a few seconds for the waveforms to settle completely. Allow time for waveforms to settle before continuing.
  • Page 206 Performance Verification To Test Bandwidth Figure 170 Probe Connected to Power Supply Calibrating a Reference Plane To get a reliable measurement from the VNA you must calibrate a reference plane so that the VNA knows where the probe under test is located along the transmission line. On the VNA, press the [Cal] key.
  • Page 207 Performance Verification To Test Bandwidth Figure 171 PV/DS Test Board Connected to VNA Select the open screen key under the Forward group. Wait until the VNA beeps indicating that it has completed the task. Connect short end of Calibration Standard to the non- pincher side of the PV/DS test board.
  • Page 208 Performance Verification To Test Bandwidth Connect the other high quality SMA cable to the VNA’s PORT 2 as shown in Figure 172. Figure 172 SMA Cable Connected to Port 2 Get the opposite sex of the Calibration Standards for the next step.
  • Page 209 Performance Verification To Test Bandwidth Connect load end of Calibration Standard to the available end of the PORT 2 SMA cable. Select the loads screen key the Reverse group. Press broadband screen key selection. Wait until the VNA beeps indicating that it has completed the task.
  • Page 210 Performance Verification To Test Bandwidth Press the omit isolation screen key. Press done 2 port cal screen key. Set the VNA's averaging to off. Save the reference plane cal by pressing the [save recall] key then the [save state] key. You may change name if you wish.
  • Page 211 Performance Verification To Test Bandwidth Spread the probe tip wires slightly so that the tips are a little bit wider than the gap between the signal trace and the ground on PV/DS board. NOTE To best simulate the conditions that are present when the probe is in actual use, inset only the tips of the wires under the pincher.
  • Page 212 Performance Verification To Test Bandwidth Select [display] key then data->memory screen key. You have now saved V waveform into the VNA's memory for future use. Measuring Vout Response Disconnect the PORT 2 cable from PV/DS test board and attach to probe output on the AutoProbe Adapter. Connect the Calibration Standard load to PV/DS test board (non- pincher side) as shown in Figure...
  • Page 213 Performance Verification To Test Bandwidth Figure 177 Typical V Waveform for an 1134A Probe Displaying Vout/Vin Response on the VNA Press the [Display] key. 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.
  • Page 214 Performance Verification To Test Bandwidth Figure 178 Typical Waveform for an 1134A Prob Press marker key and position the marker to the first point that the signal 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.

  • Page 215: To Test Input Resistance

    Performance Verification To Test Input Resistance To Test Input Resistance This procdure tests that the probe meets its specified input resistance. Table 28 Input Resistance Mode Specification ± Differential Mode 50 k Single-Ended Mode 25 k ±2% Table 29 Required Test Equipment Test Equipment Critical Specification Model Number...
  • Page 216 Performance Verification To Test Input Resistance Differential Test 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 1168A/9A Probe’s User’s Guide...
  • Page 217 Performance Verification To Test Input Resistance Read the 34401A display for the input resistance. Record the result in the performance test record later in this chapter. To pass this test the result should be between 49 kW and 51 kW. Single-ended Test Using the PV/DS test board, connect the positive (+) probe tip to the 34401A DMM as shown in...
  • Page 218 Performance Verification To Test Input Resistance Figure 180 Probing Locations on PV Test Board for Differential Test 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. Connect the probe’s amplifier body to ground on the PV/DS test board as shown in Figure 181...
  • Page 219 Performance Verification To Test Input Resistance Figure 181 Probing Locations on PV Test Board for Differential Test Read the input resistance on the DMM. Record the input resistance in Table 30 on page 220. 1168A/9A Probe’s User’s Guide...

  • Page 220: Performance Test Record

    Performance Verification Performance 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 > 12 GHz (1169A) Bandwidth > 10 GHz (1168A) ± Input Resistance 50 k 2% (Differential Mode) 25 k...
  • Page 221 ■ These input impedance is a function of the probe head type only. The probe amp bandwidth (10 GHz 1168A or 12 GHz 1169A) does not have any effect on the input impedance of the probe heads. Agilent Technologies...

  • Page 222: Spice Models

    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. 1168A/9A Probe’s User’s Guide...

  • Page 223: N5381A And N5382A Probe Heads

    SPICE Models N5381A and N5382A Probe Heads 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 SPICE Models N5381A and N5382A Probe Heads When using differential probe to probe single-ended signals: ■ vplus connected to DUT signal ■ vminus connected to DUT ground which means that Rc = 0, vsminus = 0, and Zsrcm = 0. ■...
  • Page 225 SPICE Models N5381A and N5382A Probe Heads %16 %15 .0001 .END Ω Frequency (Hz) Figure 182 Measured and Modeled Data Matching 1168A/9A Probe’s User’s Guide...

  • Page 226: N5425A Zif Probe Head With N5426A Zif Tip Attached

    SPICE Models N5425A ZIF Probe Head with N5426A ZIF Tip Attached N5425A ZIF Probe Head with N5426A ZIF Tip Attached 556.5f 40.93f 3.815n 5.731n 38.32 30.4 vplus 64.35 Rtipp AC 1 0 14.75f 6.3f vsplus 1.356n 345.2p Lom2 AC 1 0 vsminus 948.2 36.88...
  • Page 227 SPICE Models N5425A ZIF Probe Head with N5426A ZIF Tip Attached ■ vplus connected to DUT plus signal ■ vminus connected to DUT minus signal. ■ Input impedance is defined to be (vplus - vminus)/i(vsplus) SPICE Deck of N5425A with Lom2 Rom_P 0 2n N5426A ZIF Tip Attached Lm2 Cm2_N Lm2_N 5.731n...
  • Page 228 SPICE Models N5425A ZIF Probe Head with N5426A ZIF Tip Attached Ω Frequency (H z) Figure 183 Measured and Modeled Data Matching 1168A/9A Probe’s User’s Guide...

  • Page 229: N5426A Zif Tip

    SPICE Models N5426A ZIF Tip N5426A ZIF Tip 180a 3.1n 3.58n 38.7 23.9 vplus 98.85 Rtipp AC 1 0 3.14f 109.4f vsplus 360p 163.9 9.62n 2.68n Lom2 34.5u AC 1 0 vsminus 451.7 1 RESISTANCE={100e6-(100e6*sw tch-1u)} 98.85 Rsw 1 Rtipm vminus 180a 1 RESISTANCE={1u+sw tch*100e6}...
  • Page 230 SPICE Models N5426A ZIF Tip SPICE Deck of N5426A Lom2 Rom_P 0 360p Lm2 Cm2_N Lm2_N 3.58n Rtipp Rp3_N vplus 98.85 Lm1 Cm1_N Lm1_N 3.1n Rom Rom_P Cp1_P 163.9 Cp1 Cp1_P Cp1_N 180a Cp2 Cp1_P Cp2_N 69f Lp1 Cp1_N Lp1_N 3.1n Lp2 Cp2_N Lp2_N 3.58n Cm2 R1_N Cm2_N 69f vsminus vsplus_N vsminus_N...
  • Page 231 SPICE Models N5426A ZIF Tip Ω Frequency (H z) Figure 184 Measured and Modeled Data Matching 1168A/9A Probe’s User’s Guide...

  • Page 232: N2887A/N2888A Probe Heads

    SPICE Models N2887A/N2888A Probe Heads N2887A/N2888A Probe Heads Differential SPICE Input Impedance Model 1168A/9A Probe’s User’s Guide...
  • Page 233 SPICE Models N2887A/N2888A Probe Heads .subckt N2887A_Differential 1 2 rtipp 1 5 1e-12 rtipm 2 8 1e-12 cp1 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...
  • Page 234 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 1168A/9A Probe’s User’s Guide...

  • Page 235: Infiniimax I Probe Heads

    SPICE Models InfiniiMax I Probe Heads InfiniiMax I Probe Heads If damped wire accessories or longer mid- BW resistors (for solder- in probe heads) are used, they can be modeled by adding an RLC model in front of the appropriate probe head model and zeroing out the damping resistor in the probe head model.
  • Page 236 SPICE Models InfiniiMax I Probe Heads SPICE Model for Differential Probe Heads Figure 185 SPICE Model for Differential Probe Heads Rrtn (Zrtn) is dependent on connection from DUT ground to “Earth” ground. Most likely modeled by a parallel RL similar to Rom || Lom.
  • Page 237 SPICE Models InfiniiMax I Probe Heads If using diff probe to probe differential signals: ■ Rc (or Zc) will depend on the DUT circuit ■ vplus 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...
  • Page 238 SPICE Models InfiniiMax I Probe Heads Probe tip C to DUT ground lumped into Csgl since there is no damping R in ground path. Input impedance is defined as vplus/i(vsplus). SPICE Deck and E2675A Differential Browser Probe Head Measured/Modeled Data .param rd=91 rt=25k rloss=10 rom=100 Matching l1=6.5n l2=2n lom=2u cm=80f...
  • Page 239 SPICE Models InfiniiMax I Probe Heads E2678A Differential Socket Tip Probe Head .param rd=82 rt=25k rloss=25 rom=200 l1=4n l2=2n lom=2u cm=117f cg1=120f cg2=320f ct=200f 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...
  • Page 240 SPICE Models InfiniiMax I Probe Heads %89 %87 value=l2 %86 %88 value=l2 %118 %vplus value=l1/4 %85 %99 value=l1/2 %vminus %117 value=l1/4 %95 %84 value=l1/2 %122 %0 value=lom Rrtn %DUT_Ground %0 .0001 %164 %DUT_Ground .0001 Rlossp %99 %159 value=rloss Rlossm %160 %95 value=rloss %159 %118 value=rd...
  • Page 241 SPICE Models InfiniiMax I Probe Heads E2677A Differential Solder-In Probe Head Data for full bandwidth with 91W resistor. .param rd=91 rloss=18 rt=25k rom=250 l1=4n l2=2n lom=2u cm=100f cg1=80f cg2=180f ct=200f 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...
  • Page 242 SPICE Models InfiniiMax I Probe Heads E2676A Single-Ended Browser Probe Head .param rd=82 rt=25k rom=100 rloss=25 l1=3.5n l2=.5n lom=2u cg1=270f cg2=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...
  • Page 243 SPICE Models InfiniiMax I Probe Heads 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 Rsom %134 %0 value=rom E2679A Single-Ended Solder-In Probe Head Data for full bandwidth with 91W resistor.
  • Page 244 SPICE Models InfiniiMax I Probe Heads 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...

  • Page 245: Replacement Parts

    Replacement Parts E2675A Differential Browser Probe Head E2677A Differential Solder-In Probe Head E2678A Differential Socketed Probe Head E2679A Single-Ended Solder-in Probe Head N5381A and N5382A Probe Heads Other Accessories Agilent Technologies...

  • Page 246: E2675A Differential Browser Probe Head

    Replacement Parts E2675A Differential Browser Probe Head E2675A Differential Browser Probe Head Table 31 E2658A Kit Description Supplied Resistive tip (blue), 91Ω, 01131-62107 Ergonomic handle E2677A Differential Solder-In Probe Head Table 32 E2670A Kit Description Supplied 91Ω resistor for full bandwidth 150Ω...

  • Page 247: E2678A Differential Socketed Probe Head

    Replacement Parts E2678A Differential Socketed Probe Head E2678A Differential Socketed Probe Head Table 34 E2671A Kit Description Supplied 160Ω damped wire accessory 82Ω resistor for full bandwidth Socket for 25 mil (25/1000 inch) square pins, female on both ends 25 mil female socket w/20 mil round male pin on other end Heatshrink socket accessory Header adapter, 91Ω...

  • Page 248: E2679A Single-Ended Solder-In Probe Head

    Replacement Parts E2679A Single-Ended Solder-in Probe Head E2679A Single-Ended Solder-in Probe Head Table 36 Resistors Orderable Description Order From Vendor Part Number 0Ω resistor BREL International RMB16-000-JB 91Ω resistor BREL International RMB16-910-JB N5381A and N5382A Probe Heads Table 37 Replacement Wire Order Description Part Number...
  • Page 249 Replacement Parts Other Accessories Other Accessories Table 38 Accessories Description Vendor Part Number Probe Amplifier Ground Wire — 01131-21301 Probe deskew and performance verification kit Agilent E2655A 160Ω damped wire accessory (01130-21302 34 each) Agilent E5381-82103 Header adapter kit for socketed differential probe head Agilent 01131-68703 (01130-63201 10 each)
  • Page 250 Replacement Parts Other Accessories 1168A/9A Probe’s User’s Guide...
  • Page 251 E2676A, damped wire accessory, N2880A attenuators, E2677A, DC blocking caps, N2881A CD blocking caps, E2678A, 44, differential browser, N2884A, E2679A, differential probe head, 63, 65, using, E2695A, dimensions, N2887A, N5380B, probe amp, N2888A, N5381A, N5380B, N5382A, 1168/9A Probes User’s Guide...
  • Page 252 65, solder-in differential, solder-in single-ended probe, specifications, 137, temperature, temperature chamber, testing input resistance, velcro dots, WEEE compliance, weight, 1168/9A Probe User’s Guide...

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