1168A 10 GHz InfiniiMax Differential and Single-ended Probe
Contents
1. Zmin 164 3 Q 10 10 10 10 10 Frequency Hz Magnitude plot of probe input impedance versus frequency 1 23 Differential and Single ended Probe Configurations 3 N5380A SMA Probe Head Full Bandwidth 3 N5380A SMA Probe Head Full Bandwidth Unless otherwise noted time and frequency responses shown here are for the probe only when the probe is used with the 80000 series oscilloscope magnitude and phase correction is applied to further optimize the overall response Figure 1 21 Without correction gt probe only A 0 45 tr10 90 42 ps i ie o 0 4 1r20 80 28 ps 0 35 With correction probe response when phase corrected by 0 3 80000 series oscilloscope Volts tr10 90 32 ps 0 25 tr20 80 23 ps 0 2 0 15 0 0 2 0 4 0 6 0 8 1 1 2 1 4 1 6 1 8 2 Time Seconds x 10 Graph of step response with and without phase correction Normalized to an ideal input step Figure 1 22 0 6 nee Vout 0 5 tr 10 90 60 ps a Of _ ae 0 45 tr20 80 40 ps 0 4 0 35 Vincident2. Figure 1 3 6 i Vout Vin 3 A Vout BW 3 dB 12 7 GHz 9 12 i 10 10 10 Frequency Hz Graph of dB Vin and dB Vout 10 8 dB of probe with a 25 source and dB Vout Vin 10 8 dB frequency response 1 29 Differential and Single ended Probe Configurations 5 E2678A Socketed Differential Probe Head High Bandwidth 5 E2678A Socketed Differential Probe Head High Bandwidth Figure 1 4 0 2 Vsource al tr10 90 58 ps tr20 80 37 ps U 19 Vin tr10 90 68 ps tr20 80 41 ps 0 1 Volts 0 05 0 0 2 0 4 0 6 0 8 1 1 2 1 4 1 6 1 8 2 Time Seconds mw Graph of 25 Q 58 ps step generator with and without probe connected Figure 1 5 0 2 Vout tr 10 90 73 ps tr20 80 47 ps 0 15 Vin 0 1 tr10 90 68 ps tr20 80 41 ps Volts 0 05 0 0 05 0 0 2 0 4 0 6 0 8 1 1 2 1 4 1 6 1 8 2 Time Seconds x10 Graph of Vin and Vout of probe with a 25 58 ps step generator 1 30 Differential and Single ended Probe Configurations 5 E2678A Socketed Differential Probe Head High Bandwidth Figure 1 6 pe Vin 10 10 10 Frequency Hz Graph of dB Vin and dB Vout 10 8 dB of probe with a 25 Q source and dB Vout Vin 1
3. CHI S241 LOG i dE REF amp dB im Cor ill START 550 B G 666 GHz STOP 20 050 466 ABA GHz 5 Select display key then data gt memory screen Key 6 You have now saved Vin waveform into the 8720ES VNA s memory for future use Service To Test Bandwidth Measuring Vout Response 1 Disconnect the port 2 cable from PV DS test board and attach to probe output on the AutoProbe Adapter 2 Connect the 85052D cal standard load to PV DS test board non pincher side See Figure 2 7 3 Check that the tip connection is still proper See Measuring Vin Response on page 2 14 Figure 2 7 4 Press scale reference key on the 8720ES VNA 5 Set reference value to 10 8 dB 6 The display on screen is Vout It should look similar to Figure 2 8 2 16 Service To Test Bandwidth Figure 2 8 22 Sep 2084 44 27 32 CA 21 LOG 1 dE REF 10 65 dB TTT LTE T LE LTTE T HUL TE LT e e ang e ee ER rir SY atti ue START 5 B G BA GHz STOP 20 056 48 GAG GHz Displaying Vin Vout Response on 8720ES VNA Screen 1 Press the Display Key 2 Then select the Data Memory Screen Key The display should look similar to Figure 2 9 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 3 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
4. User s Guide Publication Number 01168 97000 October 2004 For Safety and Regulatory information see the pages at the back of this book O Copyright Agilent Technologies 2004 All Rights Reserved 1168A 10 GHz InfiniiMax Differential and Single ended Probes In This Book This book provides user and service documentation for the Agilent Technologies 1168A differential and single ended probes It is divided into two chapters Chapter 1 provides an overview of the recommended configurations and capacitance values of the probe shows you how to use the convenience accessories with the probe and provides the frequency impedance and time response for the recommended configurations of the probe Chapter 2 provides service and performance verification information for the probe At the back of the book you will find Safety information and Regulatory information ii Contents Differential and Single ended Probe Configurations Introduction 1 2 Convenience Accessories 1 3 Using the Velcro strips and dots 1 3 Using the ergonomic handle 1 3 Slew Rate Requirements for Different Technologies 1 6 Recommended Configurations Overview 1 9 1 Solder in Differential Probe Head full bandwidth 1 9 2 Differential Browser Probe Head full bandwidth 1 10 3 SMA Probe Head full bandwidth 1 11 Other Configurations Overview 1 12 4 Solder in Differential Probe Head high bandwidth resistors 1 12 5 Socketed Differential Probe Head high bandwidth
5. Contents Using the 8720ES VNA successfully 2 8 Calibrating a Reference Plane 2 9 Measuring Vin Response 2 14 Measuring Vout Response 2 16 Displaying Vin Vout Response on 8720ES VNA Screen 2 17 To Test Input Resistance 2 19 Initial Setup 2 19 Differential Test 2 20 Single ended Test 2 21 Performance Test Record 2 23 Replaceable Parts and Accessories 2 24 Contents 2 Differential and Single ended Probe Configurations Introduction The 1168A InfiniiMax II Active Probing system allows probing of differential and single ended signals to a bandwidth of over 10 GHz The unique architecture of the InfiniiMax probe system provides a large common mode range for measuring differential signals and a large offset range for measuring single ended signals Additionally the lower attenuation and noise greatly enhance the measurement of low level signals that are so prevalent today without overly sacrificing the input dynamic range This family of probes continues the resistor at the tip technology that Agilent pioneered in the 115x and 113x probe families In this new probe family the resistors have been moved onto the very edge of the probe tip board because at these extreme frequencies the off board mini axial lead resistors cause more response variation than is desirable 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 t
6. The 1168A Active Probe is a high frequency device with many critical relationships between parts For example the frequency response of the amplifier on the hybrid is trimmed to match the output coaxial cable As aresult to return the probe to optimum performance requires factory repair If the probe is under warranty normal warranty services apply Warranted specification are listed below Description Specification Further Information Bandwidth 10 GHz Input Resistance 50 kQ 2 Differential mode resistance 25 KQ 2 Single ended mode resistance each side to ground You may perform the tests in the Calibration and Operational Verification Tests later in this chapter to ensure these specifications are met If the probe is found to be defective we recommend sending it to an authorized service center for all repair and calibration needs Please see the To return the probe to Agilent Technologies for service on page 2 4 2 3 Service To return the probe to Agilent Technologies for service To return the probe to Agilent Technologies for service Follow the following steps before shipping the 1168A back to Agilent Technologies for service 1 Contact your nearest Agilent sales office for information on obtaining an RMA number and return address 2 Write the following information on a tag and attach it to the malfunctioning equipment Name and address of owner Product model number Example 1168A Product Serial Number Example MYXXXXXXX
7. all warranties either express or implied with regard to this manual and any information contained herein including but not limited to the implied war ranties of merchantability and fitness for a particular purpose Agilent shall not be liable for errors or for inci dental or consequential damages in connection with the furnishing use or per formance of this document or of any information con tained herein Should Agi lent and the user have a separate written agreement with warranty terms cover ing the material in this docu ment that conflict with these terms the warranty terms in the separate agreement shall control Technology Licenses The hardware and or software described in this document are furnished under a license and may be used or copied only in accordance with the terms of such license WARNING A WARNING notice denotes a hazard It calls attention to an operating procedure practice or the like that if not correctly performed or adhered to could result in personal injury or death Do not proceed beyond a WARNING notice until the indicated conditions are fully understood and met CAUTION A CAUTION notice denotes a hazard It calls attention to an operating procedure practice or the like that if not correctly performed or adhered to could result in damage to the product or loss of important data Do not proceed beyond a CAUTION notice until the indicated conditions are fully un
8. son capable of rendering first aid and resuscitation is present e Do not install substitute parts or perform any unauthorized modification to the instrument e Capacitors inside the instru ment may retain a charge even if the instrument is disconnected from its source of supply e Do not operate the instrument in the presence of flammable gasses or fumes Operation of any electrical instrument in such an environment constitutes a definite safety hazard e Do not use the instrument in a manner not specified by the manufacturer To clean the instrument If the instrument requires clean ing 1 Remove power from the instrument 2 Clean the exter nal surfaces of the instrument with a soft cloth dampened with a mixture of mild detergent and water 3 Make sure that the instrument is completely dry before reconnecting it to a power source Colorado Springs CO 80901 2197 U S A Safety Symbols A Instruction manual symbol the product is marked with this sym bol when it is necessary for you to refer to the instruction man ual in order to protect against damage to the product Hazardous voltage symbol Earth terminal symbol Used to indicate a circuit common con nected to grounded chassis Notices O Agilent Technologies Inc 2004 No part of this manual may be reproduced in any form or by any means including electronic storage and retrieval or translation into a foreign language witho
9. In addition note the external markings on the instru ment that are described under Safety Symbols Warnings e Before turning on the instru ment you must connect the pro tective earth terminal of the instrument to the protective con ductor 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 sufficient protec tion e Only fuses with the required rated current voltage and spec ified type normal blow time delay etc should be used Do not use repaired fuses or short circuited fuseholders To do so could cause a shock or fire haz ard e If you energize this instrument by an auto transformer for volt age reduction or mains isola tion the common terminal must be connected to the earth termi nal of the power source e Whenever it is likely that the Agilent Technologies Inc P O Box 2197 1900 Garden of the Gods Road ground protection is impaired you must make the instrument inoperative and secure it against any unintended operation e Service instructions are for trained service personnel To avoid dangerous electric shock do not perform any service unless qualified to do so Do not attempt internal service or adjustment unless another per
10. resistors 1 13 6 Differential Browser Probe Head 1 14 7 Solder in Single ended Probe Head high bandwidth resistors 1 15 8 Single ended Browser Probe Head 1 16 9 Socketed Differential Probe Head with damped wire accessory 1 17 Recommended configurations at a glance 1 18 Other configurations at a glance 1 19 Detailed Information for Recommended Configurations 1 20 1 N5881A Solder in Differential Probe Head Full Bandwidth and 2 N5382A Differential Browser Probe Head Full Bandwidth 1 21 3 N5380A SMA Probe Head Full Bandwidth 1 24 Detailed Information for Other Configurations 1 27 4 E2677A Solder in Differential Probe Head High Bandwidth 1 28 5 E2678A Socketed Differential Probe Head High Bandwidth 1 30 6 E2675A Differential Browser 1 32 7 E2679A Solder in Single ended Probe Head High Bandwidth 1 34 8 E2676A Single ended Browser 1 36 9 E2678A Socketed Differential Probe Head with Damped Wire Accessory 1 38 10 E2695A SMA Probe Head 1 40 N5380A SMA Probe Head with the 1134A InfiniiMax Probe 1 41 N5d381A Solder in Differential Probe Head with 2 x Longer Wires 1 42 Service Service Strategy for the 1168A Probe 2 3 To return the probe to Agilent Technologies for service 2 4 Troubleshooting 2 5 Failure Symptoms 2 6 Probe Calibration Fails 2 6 Incorrect Pulse Response flatness 2 6 Incorrect Input Resistance 2 6 Incorrect Offset 2 6 Calibration Testing Procedures 2 7 To Test Bandwidth 2 8 Initial Setup 2 8 Contents 1
11. 0 3 tr10 90 57 ps Volts tr20 80 38 ps _ UZI 0 2 0 15 0 1 0 05 0 05 0 0 2 0 4 0 6 0 8 1 1 2 1 4 1 6 1 8 2 Time Seconds x 10 Graph of Vincident and Vout of probe with a 57 ps step 1 24 Figure 1 23 dB 3 Differential and Single ended Probe Configurations 3 N5380A SMA Probe Head Full Bandwidth BW 3 dB 12 6 GHz rr 10 10 10 Frequency Hz Magnitude plot of differential insertion loss 6 8 dB Figure 1 24 20 dB 30 40 50 60 10 10 10 Frequency Hz Magnitude plot of differential return loss 1 25 Differential and Single ended Probe Configurations 3 N5380A SMA Probe Head Full Bandwidth Figure 1 25 20 dB 30 40 50 60 10 10 10 Frequency Hz Magnitude plot of common mode response 6 8dB common mode rejection 1 26 Differential and Single ended Probe Configurations 3 N5380A SMA Probe Head Full Bandwidth Detailed Information for Other Configurations This section contains graphs of the performance characteristics of the 1168A active probe using the different probe heads that come with the E2669A diffe
12. 0 5 tr20 80 60 ps Volts 0 4 Vout 0 3 tr10 90 94 5 ps l tr20 80 63 ps 0 2 0 1 0 0 1 0 0 2 0 4 0 6 0 8 1 1 2 1 4 1 6 1 8 2 Time Seconds x10 Graph of Vincident and Vout of probe with a 90 ps step Figure 1 20 10 10 10 Frequency Hz Magnitude response of differential insertion loss 1 03 dB 1 40 Differential and Single ended Probe Configurations N5380A SMA Probe Head with the 1134A InfiniiMax Probe N5380A SMA Probe Head with the 1134A InfiniiMax Probe Figure 1 21 0 3 Vincident 7 tr10 90 90 ps NN 0 25 tr20 80 60 ps SS Nout tr10 90 88 5 ps tr20 80 58 8 ps 0 0 2 0 4 0 6 0 8 1 1 2 1 4 1 6 1 8 2 Time Seconds x 10 Graph of Vincident and Vout of probe with a 90 ps step Figure 1 22 BW 3 dB 8 GHz 10 10 10 Frequency Hz Magnitude response of differential insertion loss 16 03 dB 1 41 Differential and Single ended Probe Configurations N5381A Solder in Differential Probe Head with 2 x Longer Wires The following graph shows the probe response to a 25 Q 58 ps step generator with the N5381A Solder in Differential Probe Head with
13. 0 8 Time Seconds Graph of 25 Q 100 ps step generator with and without probe connected Figure 1 14 1 1 2 0 2 Vout tr 10 90 152 ps f tr20 80 102 ps U 19 0 1 Vin tr10 90 174 ps Volts tr20 80 109 ps 0 05 0 0 2 0 4 0 6 0 8 Time Seconds Graph of Vin and Vout of probe with a 25 100 ps step generator 1 36 1 1 2 Differential and Single ended Probe Configurations 8 E2676A Single ended Browser Figure 1 15 9 Vout Vin dB Vin BW 3 dB 6 10 10 10 Frequency Hz Graph of dB Vin and dB Vout 10 8 dB of probe with a 25 source and dB Vout Vin 10 8 dB frequency response 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 90 to prevent ringing at 10 GHz 1 37 Differential and Single ended Probe Configurations 9 E2678A Socketed Differential Probe Head with Damped Wire Accessory 9 E2678A Socketed Differential Probe Head with Damped Wire Accessory Due to reflections on the long wire accessories signals being probed should be limited to 224
14. 0 8 dB frequency response 1 31 Differential and Single ended Probe Configurations 6 E2675A Differential Browser 6 E2675A Differential Browser Figure 1 7 0 2 l Vsource tr10 90 136 ps tr20 80 90 ps 0 15 Vin tr10 90 160 ps 7 tr20 80 102 ps 0 0 2 0 4 0 6 0 8 1 1 2 1 4 1 6 1 8 Time Seconds Graph of 25 Q 136 ps step generator with and without probe connected Figure 1 8 0 2 Vout tr 10 90 143 ps tr20 80 97 ps 0 15 Vin 0 1 tr10 90 160 ps tr20 80 102 ps Volts 0 05 0 0 05 0 0 2 0 4 0 6 0 8 1 1 2 1 4 1 6 1 8 2 Time Seconds x10 Graph of Vin and Vout of probe with a 25 136 ps step generator 1 32 Differential and Single ended Probe Configurations 6 E2675A Differential Browser Figure 1 9 Vout Vin dB pf a Vin Vout BW ee I 3 dB 5 2 GHz 10 10 10 Frequency Hz Graph of dB Vin and dB Vout 10 8 dB of probe with a 25 source and dB Vout Vin 10 8 dB frequency response 1 33 Differential and Single ended Probe Configurations 7 E2679A Solder in Single ended Probe Head High Bandwidth T E2679A Solder in Single ended Probe Head High Bandwidth Figure 1 10 0 2
15. 0 ps rise time measured at the 10 and 90 amplitude levels This is equivalent to lt 1 5 GHz bandwidth Figure 1 16 0 2 Vsource tr10 90 295 ps tr20 80 199 ps f Vin tr10 90 334 ps tr20 80 217 ps 0 0 2 0 4 0 6 0 8 1 1 2 1 4 1 6 1 8 2 Time Seconds gage Graph of 25 Q 295 ps step generator with and without probe connected Figure 1 17 0 2 Vin Pe tr10 90 334 ps _ __ lt 0 15 tr20 80 217 ps Vout tr 10 90 464 ps 0 1 tr20 80 294 ps 0 0 2 0 4 0 6 0 8 1 1 2 1 4 1 6 1 8 2 Time Seconds vie Graph of Vin and Vout of probe with a 25 295 ps step generator 1 38 Differential and Single ended Probe Configurations 9 E2678A Socketed Differential Probe Head with Damped Wire Accessory Figure 1 18 6 Vin 10 10 10 Frequency Hz Graph of dB Vin and dB Vout 10 8 dB of probe with a 25 source and dB Vout Vin 10 8 dB frequency response 1 39 Differential and Single ended Probe Configurations 10 E2695A SMA Probe Head 10 E2695A SMA Probe Head Figure 1 19 1 0 9 0 8 0 7 0 6 Vincident tr10 90 90ps AJ
16. 1A N5382A and N53880A kits 1 20 Differential and Single ended Probe Configurations 1 N5381A Solder in Differential Probe Head Full Bandwidth and 2 N5382A Differential Browser Probe Head Full Bandwidth 1 N5381A Solder in Differential Probe Head Full Bandwidth and 2 N5382A Differential Browser Probe Head Full Bandwidth Unless otherwise noted time and frequency responses shown here are for the probe only When the probe is used with the 80000 series oscilloscope magnitude and phase correction can be applied to further optimize the overall response Figure 1 15 Without correction probe only a tr10 90 37 ps tr20 80 25 ps 0 8 0 7 0 6 With correction probe response when phase corrected by Volts 06 80000 series oscilloscope tr10 90 30 ps 0 4 tr20 80 21 ps 0 3 0 2 0 1 0 0 1 0 2 0 0 2 0 4 0 6 0 8 1 1 2 1 4 1 6 1 8 2 Time Seconds x 10 Graph of step response with and without phase correction Normalized to an ideal input step Figure 1 16 0 2 Vsource tr10 90 58 ps tr20 80 37 ps 0 15 Vin tr10 90 65 ps tr20 80 40 ps 0 1 Volts 0 0 2 0 4 0 6 0 8 1 1 2 1 4 1 6 1 8 2 Time Seconds x 10 Graph of 25 Q 58 ps step generator with and without probe connected 1 21 Diff
17. 2 x Longer Wires 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 1 23 Correct length times 2 wires spread 90 degrees tr10 90 68 ps BW 3 dB 10 9 GHz f y q Pde 0 2 Correct length tr10 90 67 ps IBW 3dB 13GHz a i N Correct length times 2 wires parallel tr10 90 65 ps BW 3 dB 12 1 GHz less bandwidth but more peaking Volts 0 1 1 2 1 4 9 x 10 0 2 0 6 0 8 1 0 4 Time Seconds 1 42 Service Service The service section of this manual contains the following information e Service Strategy for the 1168A probe e Cleaning the 1168A probe e Returning the 1168A probe to Agilent Technologies for service e Recommended tools and test equipment e Calibration Testing Procedures e To Test Bandwidth e To Test Input Resistance e Performance test record e Replaceable parts and accessories 2 2 Table 2 1 Service Service Strategy for the 1168A Probe Service Strategy for the 1168A Probe This chapter provides service information for the 1168A family of Active and Differential Probes The following sections are included in this chapter e Service strategy e Returning to Agilent Technologies for service e Troubleshooting e Failure symptoms
18. 24 500 Q and 25 500 Q A recommended grounding solution Is to use the probe body ground 2 22 Service Performance Test Record Performance Test Record C Bandwidth Input Resistance gt 10 GHz Result Pass Fail Differential Mode Limits 49 000 Q to 51 000 Q kQ Pass Fail Single ended Mode Limits 24 500 Q to 25 500 Q kQ kQ Pass Fail 2 23 Service Replaceable Parts and Accessories Replaceable Parts and Accessories See the User s Quick Start Guide for a list of replaceable parts and accessories 2 24 Index B bandwidth test 2 8 C calibration failure 2 6 calibration procedure 2 7 cleaning the instrument 3 F failure symptoms 2 6 I instrument cleaning the 3 P packing for return 2 4 parts replaceable 2 24 R repair 2 4 replacement parts 2 24 resistance testing 2 19 returning probe to Agilent Technologies 2 4 S service strategy 2 3 specifications warrantied 2 3 T test bandwidth 2 8 testing input resistance 2 19 troubleshooting 2 5 Index 1 Index 2 Safety Notices This apparatus has been designed and tested in accor dance with IEC Publication 1010 Safety Requirements for Mea suring Apparatus and has been supplied in a safe condition This is a Safety Class I instru ment provided with terminal for protective earthing Before applying power verify that the correct safety precautions are taken see the following warn ings
19. 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 RapidlO 8 16 2Gb YES 7 2 14 4 50 1 2 Infiniband 2 5Gb YES 4 8 9 6 100 1 6 HyperTransport 1 6Gb YES 4 0 8 0 113 1 5 SATA 1 5Gb YES 1 3 2 1 134 0 6 USB 2 0 YES 0 9 1 8 375 1 1 DDR 200 266 333 NO 7 2 n a 300 3 6 PCI NO 4 3 n a 500 3 6 AGP 8X NO 3 1 n a 137 0 7 1 The probe specification is 18 V ns 2 The probe specification is 30 V ns 1 6 Differential and Single ended Probe Configurations Slew Rate Requirements for Different Technologies Figure 1 4 Slew Rates of Popular Technologies Compared to Maximum Probe Slew Rates wi Differential Slew Rates Edge Slew Rates V nS Popular Technologies Maximum Edge Amplitude x 0 6 Minimum 20 to 80 Rise Time 1 7 Differential and Single ended Probe Configurations Slew Rate Requirements for Different Technologies Figure 1 5 Slew Rates of Popular Technologies Compared to Maximum Probe Slew Rates 20 0 Maximum Probe Single ended Slew Rate 18 V nS 18 0 16 0 14 0 12 0 E Single ended Slew Rates 10 0 8 0 Edge Slew Rates V nS 6 0 4 0 2 0 C FX KF PF FF FF FX YF SF OC AG Y S Measurement of one side of Q differential signal Popular Technologies Maximum Edge Amplitude x 0 6 Minimum 20 to 80 Rise Time 1 8 Differential and Single ended Probe Configurations Recommended Configur
20. Aa TERN TI Variablen ocal o Local O Variable ON TT ae ea NS ae KA ih of Sey a WK A 7 NO eed NONE B ed MN A J e DW MS SA SEE D NS JPY N J eo NoEL Power N DE Power Ei TLAN ES I IRJ p EE fod YY Re E ve B fe EA Calibrating a Reference Plane To get a reliable measurement from the 8720ES VNA we must calibrate a reference plane so that the 8720ES VNA knows where the probe under test is located along the transmission line 2 9 Service To Test Bandwidth 1 Press the Cal key on the 8720ES VNA OD yes i Z N O C CJI G CE TEST E moa al e e o e Port 1 Port 2 So SLA K a Ree p Wri SY 131e1 8120 4948 t E2655 66503 o Reference Plane 2 Then Press the cal menu screen key 3 Finally press the full 2 port screen key 4 Connect one ofthe high quality SMA cables to port one and to the pincher side of PV DS test board 5 The calibration reference plane is at the other end of PV DS test board Service To Test Bandwidth Figure 2 2 E T o p a EEN JK gt TS i ew S L GER JE i TJ oo oA Fre D a eee lO Port 1 Port 2 ae amp 8120 4948 a i To 2655 66503 Reference Plane 6 Perform
21. Calibration for the port one side of the Reference plane e Press the reflection screen key e Connect open end of 85052D to the non pincher side of the PV DS test board e Select the open screen key under the Forward group e The 8720ES VAN will beep when done e Connect short end of 85052D to the non pincher side of the PV DS test board e Select short screen key under the Forward group e The 8720ES VAN will beep when done e Connect load end of 85052D to the non pincher side of the PV DS test board e Select the loads screen key under the Forward group e Press broadband screen key selection e The 8720ES VAN will beep when done e Press the done loads screen key e You have just calibrated one side of the reference plane 7 Connect the other high quality SMA cable to port two of the 8720ES VNA Figure 2 3 Service To Test Bandwidth foo l O TD J il N rr _ O PA C ILI LI a JE J LI C _ e e e e is Port 1 Port 2 ae a EX CD i FN 25 8120 4948 A Ton Plane 8 Get the opposite sex of the 85052D calibration standards for the next step 9 Perform Calibration for the port two side of the Reference plane 10 11 e Press the reflection screen key e Connect open end of 85052D to the available end of the port two SMA cable e Selec8720ES t the open screen key under the Reverse gro
22. X Description of failure or service required Include probing and browsing tips if you feel the probe is not meeting performance specifications or a yearly calibration is requested 3 Protect the 1168A Probe by wrapping in plastic or heavy paper 4 Pack the 1168A Probe in the original carrying case or if not available use bubble wrap or packing peanuts 5 Place securely in sealed shipping container and mark container as FRAGILE If any correspondence Is required refer to the product by serial number and model number 2 4 Service Troubleshooting Troubleshooting e If your probe is under warranty and requires repair return it to Agilent Technologies Contact your nearest Agilent Technologies Service Center e If the failed probe is not under warranty you may exchange it for a reconditioned probe See To Prepare the Probe for Exchange in this chapter 2 5 Service Failure Symptoms Failure Symptoms The following symptoms may indicate a problem with the probe or the way it is used Possible remedies and repair strategies are included The most important troubleshooting technique is to try different combinations of equipment so you can isolate the problem to a specific probe Probe Calibration Fails Probe calibration failure with an oscilloscope is usually caused by improper setup If the calibration will not pass check the following e Check that the probe passes a waveform with the correct amplitude e I
23. al and Single ended Probe Configurations Other Configurations Overview 6 Differential Browser Probe Head This configuration has a bandwidth approximately equal to 5 2 GHz see the graphs starting on page 1 32 This configuration consists of the following parts e 2675A Differential Browser Probe Head e 01131 62102 91 Q resistor probe tips 2 each e 01131 43201 Ergonomic handle optional Figure 1 11 2 EEE by MAM mI CA F FS a P is eas a gt ge oe gr se gt eg gs gs KKEKBRKEKER ERE INN y Figure 1 12 Differential and Single ended Probe Configurations Other Configurations Overview 7 Solder in Single ended Probe Head high bandwidth resistors This configuration has a bandwidth approximately equal to 5 2 GHz see the graphs starting on page 1 34 This configuration consists of the following parts e 2679A Solder in Single ended Probe Head e 01131 81510 91 Q mini axial lead resistor e 01131 81504 0 Q mini axial lead resistor The 01131 81510 and 01131 81504 resistors have been trimmed and formed as per template 01131 94311 pegepegsesee LASSSeeeaeaaess i gt HERE ERE a4 S y am m n ih a a a a a a a ee SEGS MT te UBS Figure 1 13 Differential and Single ended Probe Configurations Other Configurations Overview 8 Single ended Browser Probe Head This configuration has a bandwidth approximately equal to 6 GHz see the graphs startin
24. all connections are tight and secure If needed use a vice to hold the cables and test board stable while making measurements 3 Be careful not to cross thread or force any connectors This could be a very costly error to correct Initial Setup 1 Turn on the 8720ES VNA and let warm up for 20 minutes 2 Press the green Preset key on the 8720ES VNA 3 Use the 8720ES VNA s default power setting of 0 dBm You can locate this feature by pressing the Power key on the front panel 4 Set the 8720ES VNA s averaging to 4 You can find this selection menu by pressing the AVG key Then select the Averaging Factor screen key to adjust the averaging 5 Press the Sweep Setup key on the 8720ES VNA Then press the sweep type menu screen key Select the log freq screen Key 6 Connect the 1168A probe under test to the Auto Probe Adapter and power the probe using the 1143A power supply Install the outside thread adapter to the Auto Probe Adapter 2 8 Service To Test Bandwidth Figure 2 1 E i ee A A ce Agilent 1143A PROBE OFFSET CONTROL AND POWER MODULE LINE G PROBE 1 OFFSET DH PROBE 2 OFFSET O I Coarse Fine Zeron Remoten Remotea Zero Coarse Fine m m Variat Loca O Loc Variable m TT
25. ations Overview Recommended Configurations Overview The recommended configurations are designed to give the best probe performance for different probing situations The probe configurations are shown in the order of the best performance to the least performance 1 Solder in Differential Probe Head full bandwidth This configuration has a bandwidth of greater than 10 GHz see the graphs starting on page 1 28 The configuration consists of the following parts e N5381A Solder in Differential Probe Head e 01169 81301 tin plated nickel wires 2 each The 01169 81301 wire has been trimmed and formed as per trim gauge 01169 23801 Figure 1 6 1 9 Differential and Single ended Probe Configurations Recommended Configurations Overview 2 Differential Browser Probe Head full bandwidth This configuration has a bandwidth of greater than 10 GHz see the graphs starting on page 1 28 The configuration consists of the following parts e N5382A Differential Browser Probe Head e 01130 43202 Ergonomic handle e 01169 21304 tin plated steel wires 2 each The 01169 21304 wire has been trimmed and formed as per trim gauge 01169 23801 Figure 1 7 RURAS ARRERA RANS s gere 2 23 TTT Differential and Single ended Probe Configurations Recommended Configurations Overview 3 SMA Probe Head full bandwidth This configuration has a bandwidth of greater than 10 GHz see the graphs starting on page 1 28 T
26. ce Graphs 1 28 1 30 1 36 1 38 1 40 Other configurations at a glance Usage Differential and Single ended signals Solder in hands free connection Hard to reach targets Very small fine pitch targets Characterization Differential and Single ended signals Removable connection using solder in resistor pins Hard to reach targets Differential and Single ended signals Hand held browsing Probe holders General purpose troubleshooting Ergonomic handle available e Single ended signals only e Solder in hands free connection when physical size is critical Hard to reach targets Very small fine pitch targets Single ended signals only Hand or probe holder where physical size IS Critical General purpose troubleshooting Ergonomic handle available Differential and Single ended signals For very wide spaced targets Connection to 25 mil square pins when used with supplied sockets 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 Differential and Single ended Probe Configurations Other configurations at a glance Detailed Information for Recommended Configurations This section contains graphs of the performance characteristics of the 1168A active probe using the different probe heads that come with the N538
27. dB because the loss caused by the PV DS board makes a slightly optimistic measurement 4 Read marker frequency measurement and record it in the test record located later in this chapter 5 The bandwidth test passes if the frequency measurement is greater that the probe s bandwidth limit Example gt 10 GHz Service To Test Bandwidth Figure 2 9 2 Sep 2084 14 29 39 CRI 521 4 LOG i dB REF 10 63 dB 1115 238 dB 12 938 418 119 GHz Cor t START 050 G R B G GHz STOP 26 656 G66 868 GHz Service To Test Input Resistance To Test Input Resistance This test ensures that the 1168A Probe meets its specified input resistance Differential Mode 50 kQ 2 Single ended Mode 25 kQ 2 Table 2 10 Equipment Tool Critical Specification Model Number Oscilloscope No substitute Requires precision BNC DS080000 Series Infiniium Oscilloscope connectors Digital Multimeter 2 wire resistance accuracy better than 34401A 0 01 Adapter BNC f to SMA m In E2655B Kit E2655 83201 PV DS Test Board No Substitute In E2655B Kit E2655 66503 Initial Setup 1 Power on the Infiniium oscilloscope and 34401A DMM 2 Connect the 1168A probe under test to Channel 1 of the Infiniium oscilloscope 3 Select the 2 wire Ohm display on the 34401A DMM Service To Test Input Resistance Differential Test 1 Using the PV DS test board connect the 1168A and probe tips to the 34401A DMM Apply upward pressure to the clip to insure proper electr
28. derstood and met
29. erential and Single ended Probe Configurations 1 N5381A Solder in Differential Probe Head Full Bandwidth and 2 N5382A Differential Browser Probe Head Full Bandwidth Figure 1 17 0 2 Vout tr 10 90 67 ps tr20 80 44 ps 0 15 Vin tr10 90 65 ps 0 1 tr20 80 40 ps Volts 0 0 05 0 0 2 0 4 0 6 0 8 1 1 2 1 4 1 6 1 8 2 Time Seconds x 10 Graph of Vin and Vout of probe with a 25 Q 58 ps step generator Figure 1 18 6 Vout Vin 3 dB 0 SERRA NANNA TT Vin Vout K BW 3 dB 13 GHz 10 10 10 Frequency Hz Graph of dB Vin and dB Vout 10 8 dB of probe with a 25 source and dB Vout Vin 10 8 dB frequency response 1 22 Differential and Single ended Probe Configurations 1 N5381A Solder in Differential Probe Head Full Bandwidth and 2 N5382A Differential Browser Probe Head Full Bandwidth Figure 1 19 20 dB 30 40 50 60 10 10 10 Frequency Hz Graph of dB Vout Vin 10 8 dB frequency response when inputs driven in common common mode rejection Figure 1 20 10 50kQ Differential Mode Input Single ended Mode Input 25 kQ 7 0 21 pF
30. for 1 dB per division Set reference position for 7 divisions Set reference value for 0 dB Press the measure Key Press the s21 screen key Ensure s21 response on screen is flat about 0 1 dB out to 13 GHz Service To Test Bandwidth Measuring Vin Response 1 Position 1168A probe conveniently to allow the probe tip to be normal to the PV DS board See Figure 2 5 2 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 3 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 Do not inset the wires completely under the pincher such that the contact points are right next to 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 degree 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 degree position This will actually form the wires into an L shape Place the side on center conductor and side to ground Press the Sweep Setup key on the 8720ES VNA Then press the trigger menu screen key Select the continuous screen key Figure 2 5 4 Youshould now have the Vin waveform on screen It should look similar to Figure 2 6 Service To Test Bandwidth Figure 2 6 22 Sep 2084 44 25 13
31. fthe probe is powered by the oscilloscope check that the offset is approximately correct The probe calibration cannot correct major failures e Be sure the oscilloscope passes calibration without the probe e Be sure that the probe head that you are using has been in the oscilloscope s Probe Setup dialog box Incorrect Pulse Response flatness If the probe s pulse response shows a top that is not flat check for the following e Output of probe must be terminated into a proper 50 Q termination 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 insure the probe is terminated into a low reflectivity 50 Q load 2 e If the coax or coaxes of the probe head in use has excessive damage then reflections may be seen within 1 ns of the input edge If you suspect a probe head swap it with another probe head and see if the non flatness problem is fixed e If one of the components in the tip has been damaged there may be a frequency gain non flatness at around 40 MHz If you suspect a probe head swap it with another probe head and see if the non flatness problem is fixed Incorrect Input Resistance The input resistance is determined by the probe head in use If the probe head is defective damaged or has been exposed to excessive voltage the input resistor may be damaged If this is the case the probe head is no longer useful A new probe head w
32. g on page 1 36 This configuration consists of the following parts e E2676A Single ended Browser Probe Head e 01131 43202 Ergonomic handle optional e 01131 62102 91 Q resistor probe tip e 01130 60005 Ground collar assembly RPM Poo osDdes gt 2 ele PMII teeperenennngand PIGS Ss ssssssssss ne RE BE t t 54 2 unnn hinn y Figure 1 14 Differential and Single ended Probe Configurations Other Configurations Overview 9 Socketed Differential Probe Head with damped wire accessory This configuration has a bandwidth approximately equal to 1 2 GHz see the graphs starting on page 1 38 This configuration consists of the following parts e 2678A Socketed Differential Probe Head e 01130 21302 160 2 damped wire accessory 2 each 4 ra s E TTET sf a EN e 4 o gt aaasaaasna TES RELL TEE FEER i a a a gt A G PE f amp A e 3 a 6 z PPL LLELLDEEELE DELELE bi SEREF se by ig ia j l ie Radi id 4 i Pi gt PoRMARKRB NE E i PRET T PALES AVAL EN ENF be i o s amp 6 z e Differential and Single ended Probe Configurations Recommended configurations at a glance Recommended configurations at a glance Table 1 2 Probe Head Configurations Band Cdiff Cse 2 Starting Usage width pF pF Page of GHz Performance Graphs 1 N5381A Soldier in differential gt 10 0 21 0 35 1 21 e Differential and Single ended signals full band
33. he configuration consists of the following parts e N5380A SMA Probe Head Figure 1 8 Differential and Single ended Probe Configurations Other Configurations Overview Other Configurations Overview Other configurations of probe heads are available in the E2669A connectivity kit Not all ofthese configurations will not give the best probe performance of the 1168A The probe configurations are shown in the order of the best performance to the least performance 4 Solder in Differential Probe Head high bandwidth resistors This configuration has a bandwidth of greater than 10 GHz see the graphs starting on page 1 28 The configuration consists of the following parts e 2677A Solder in Differential Probe Head e 01131 81510 91 Q mini axial lead resistors 2 each The 01131 81510 resistor has been trimmed and formed as per template 01131 94311 Figure 1 9 g ST R Wie ey ERE ee ee m m fy CEET ey Differential and Single ended Probe Configurations Other Configurations Overview 5 Socketed Differential Probe Head high bandwidth resistors This configuration has a bandwidth of greater than 10 GHz see the graphs starting on page 1 30 This configuration consists of the following parts e 2678A Socketed Differential Probe Head e 01130 81506 82 Q axial lead resistors 2 each The 01130 81506 resistor has been trimmed and formed as per template 01131 94308 Figure 1 10 Differenti
34. he input impedance This system uses interchangeable probe heads to optimize the performance and usability of hand or probe holder browsing solder in and SMA connections The new probe heads available for this system are e Differential Solder in Probe Head allows a soldered connection into a system for a reliable hands free connection This probe head provides full bandwidth performance for measuring differential and single ended signals and utilizes strong 7 mil or optional 5 mil diameter nickel wires which allow connection to very small fine pitch targets Differential Hand held Browser or for probe holders allows temporary connection to points ina system This probe head has the same tip pc board and the same length tip wires so it provides 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 Differential Socket tip Probe Head provides sockets that accept 20 mil diameter pins with 100 mil spacing The intended application for this probe head is to insert two of the supplied 20 mil diameter lead resistors into the sockets and then solder the resistors into the target system This allows a removable hands free connection that provides full bandwidth but with an increase in capacitive loading over the s
35. ical connection Figure 2 11 Infiniium oscilloscope 1168A 34401A 1251 2277 SMA to BNC 2 Read the 34401A display for the Input Resistance 3 Record the result in the performance test record later in this chapter To pass this test the result should be between 49 000 Q and 51 000 Q 2 20 Service To Test Input Resistance Single ended Test 1 Using the PV DS test board connect the probe trip to the 34401A DMM Apply upward pressure to the clip to insure proper electrical connection 2 Connect the amp body ground to the PV DS test board ground Figure 2 12 Infiniium oscilloscope 1168A 34401A 1251 2277 sg SMA to BNC 3 Read the 34401A display for the Input Resistance 4 Record the result in the performance test record later in this chapter To pass this test the result should be between 24 500 Q and 25 500 Q 2 21 Service To Test Input Resistance 5 Using the PV DS test board connect the probe trip to the 34401A DMM Apply upward pressure to the clip to insure proper electrical connection 6 Connect the amp body to ground on the PV DS test board Figure 2 13 Infiniium oscilloscope x RK i 34401A 1251 2277 7 Read the 34401A display for the Input Resistance 8 Record the result in the performance test record later in this chapter To pass this test the result should be between
36. ill 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 2 6 Service Calibration Testing Procedures Calibration Testing Procedures These tests can be performed to ensure the 1168A Probe meets specifications 2 7 Service To Test Bandwidth To Test Bandwidth This test ensures that the 1168A Probe meets its specified bandwidth 1168A gt 10 GHz Table 2 2 Equipment Tool Critical Specification Model Number Vector 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 Outside thread 3 5 mm male to No Substitute Agilent 5062 1247 3 5 mm female adapter Cable 2 3 5 mil SMA High Quality Agilent 8120 4948 Cable 1 5 mil Probe Power Extension No Substitute Agilent 01143 61602 PV DS Test Board No Substitute In E2655B Kit Agilent E2655 66503 sing the 8720ES VNA successfully Remember these simple guidelines when working with the 8720ES VAN to get accurate stable measurements 1 Sometimes it may take a few seconds for the waveforms to settle completely Please allow time for waveforms to settle before continuing 2 Make sure
37. l Vsource tr10 90 136 ps tr20 80 90 ps 0 15 Vin tr10 90 163 ps ji tr20 80 105 ps Volts 0 05 0 0 2 0 4 0 6 0 8 1 1 2 1 4 1 6 1 8 2 Time Seconds 9 Graph of 25 Q 136 ps step generator with and without probe connected Figure 1 11 0 2 Vout tr 10 90 152 ps tr20 80 103 ps U 19 Vin 0 1 tr10 90 163 ps tr20 80 105 ps Volts 0 05 0 0 05 0 0 2 0 4 0 6 0 8 1 1 2 1 4 1 6 1 8 2 Time Seconds x10 Graph of Vin and Vout of probe with a 25 136 ps step generator 1 34 Differential and Single ended Probe Configurations 7 E2679A Solder in Single ended Probe Head High Bandwidth Figure 1 12 6 Vin 10 10 10 Frequency Hz Graph of dB Vin and dB Vout 10 8 dB of probe with a 25 source and dB Vout Vin 10 8 dB frequency response 1 35 Differential and Single ended Probe Configurations 8 E2676A Single ended Browser 8 E2676A Single ended Figure 1 13 Browser 0 2 Vsource tr10 90 136 ps 0 15 0 1 tr20 80 90 ps Vin tr10 90 174 ps tr20 80 109 ps Volts 0 05 0 0 2 0 4 0 6
38. older in and browser probe heads Additionally 3 6 cm resistor tip wire accessories are provided for high fidelity lower bandwidth probing of signals with very wide spacing It is recommended that a 25 mil diameter plated through hole be placed on a board for mounting the 20 mil diameter lead of the resistors SMA Probe Head allows connection to differential and single ended signals that have 50 Q connectors This probe head provides full bandwidth performance with high quality 50 Q terminations and an external port for driving the common mode termination voltage This is a relatively inexpensive probe head for the 1168A probe amp which allows the probe amp to be used in multiple applications Also probe heads from the 113x probe family are supported within the limitations which are noted Please refer to the 1134A User s Guide for information on these probe heads Performance graphs and data are provided for all probe heads 1 2 Differential and Single ended Probe Configurations Convenience ccessories Convenience Accessories Using the Velcro strips and dots The Velcro strips and dots can be used to secure the probe amp to a circuit board removing the weight of the probe from the circuit connection This is done by using the following steps 1 Wrap the Velcro strip around the probe amp body 2 Attach a Velcro dot to the circuit board 3 Attach the Velcro strip to the Velcro dot Figure 1 1 3 Using the Velcro dots and
39. rential connectivity kit and the E2695A SMA probe head 1 27 Differential and Single ended Probe Configurations 4 E2677A Solder in Differential Probe Head High Bandwidth 4 E2677A Solder in Differential Probe Head High Bandwidth 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 If you must use the E2677A insure that the mini axial lead resistors are positioned directly adjacent to each other and touching Figure 1 1 Vsolitce tr10 90 58 ps tr20 80 37 ps 0 15 Vin tr10 90 66 ps tr20 80 40 ps 0 1 Volts 0 05 0 0 05 0 0 2 0 4 0 6 0 8 1 1 2 1 4 1 6 1 8 2 Time Seconds ci Graph of 25 Q 58 ps step generator with and without probe connected Figure 1 2 0 2 Vout tr 10 90 73 ps tr20 80 47 ps 0 15 Vin ia tr10 90 66 ps tr20 80 40 ps Volts 0 05 0 0 05 0 0 2 0 4 0 6 0 8 1 1 2 1 4 1 6 1 8 2 Time Seconds E Graph of Vin and Vout of probe with a 25 Q 58 ps step generator 1 28 Differential and Single ended Probe Configurations 4 E2677A Solder in Differential Probe Head High Bandwidth
40. strips Using the ergonomic handle Because of their small size it can be difficult to hold the single ended or the differential browsers for extended periods of time The ergonomic handle can be used to more comfortably hold the browser The following pictures show how to mount the browser in the ergonomic handle 1 3 Differential and Single ended Probe Configurations Convenience Accessories Figure 1 2 Put part number label here 01168805 1 4 Differential and Single ended Probe Configurations Convenience Accessories The following pictures show how to remove the browser from the ergonomic handle Figure 1 3 01168207 01168809 1 5 Differential and Single ended Probe Configurations Slew Rate Requirements for Different Technologies Slew Rate Requirements for Different Technologies The following table shows the slew rates for several different technologies The maximum allowed input slew rate is 18 V ns for single ended signals and 30 V ns for differential signals Table 1 1 shows that the maximum required slew rate for the different technologies is much less that of the probe Table 1 1 Slew Rate Requirements Name of Technology Differential Max Max Driver Min MaxTransmitter Signal Single Ended Differential Edge Rate Level Diff V Slew Rate Slew Rate 20 80 ps V ns V ns PCI Express 3GI0 YES 9 6 19 2 50 1 6 RapidlO Serial 3 125Gb YES 8 0 16 0 60 1 6 10GbE XAUI 4x3 125Gb YES 8 0 16 0
41. up e The 8720ES VNA will beep when done e Connect short end of 85052D to the available end of the port two SMA cable e Select short screen key the Reverse group e The 8720ES VNA will beep when done e Connect load end of 85052D to the available end of the port two SMA cable e Select the loads screen key the Reverse group e Press broadband screen key selection e The 8720ES VNA will beep when done e Press the done loads screen key e You have just calibrated the other side of the reference plane Press standards done key Connect port two SMA cable to the non pincher side of PV DS test board Figure 2 4 Service To Test Bandwidth ER VEL RE j J Ken m pA 3 J rahe e Lea eee e J Port 1 Port 2 a 2 i i Sa i 3 R ASS 8120 4948 SR ER i Teo E2655 66503 Reference Plane 12 Press the transmission screen Key 13 14 15 16 17 18 19 20 21 22 23 24 Press the do both fwd and reverse screen Key The 8720ES VNA will beep four times when done Press the isolation screen key Press the omit isolation screen key Press done 2 port cal screen key Set the 8720ES 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 Press the scale reference key Then Set
42. ut prior agreement and written consent from Agilent Technologies Inc as governed by United States and international copyright laws Manual Part Number 01168 97000 October 2004 Print History 01168 97000 October 2004 Agilent Technologies Inc 1900 Garden of the Gods Road Colorado Springs CO 80907 USA Restricted Rights Legend If software is for use in the per formance of a U S Government prime contract or subcontract Software is delivered and licensed as Commercial com puter software as defined in DFAR 252 227 7014 June 1995 or as a commercial item as defined in FAR 2 101 a or as Restricted computer software as defined in FAR 52 227 19 June 1987 or any equivalent agency regulation or contract clause Use duplication or dis closure of Software is subject to Agilent Technologies standard commercial license terms and non DOD Departments and Agencies of the U S Govern ment 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 7015 b 2 November 1995 as applicable in any technical data Document Warranty The material contained in this document is provided as is and is subject to being changed without notice in future editions Further to the maximum extent permitted by applica ble law Agilent disclaims
43. width e Solder in hands free connection e Hard to reach targets e Very small fine pitch targets e Characterization 2 N5382A Differential browser gt 10 0 21 0 35 1 21 e Differential and Single ended signals full bandwidth e Hand held browsing e Probe holders e General purpose troubleshooting e Ergonomic handle available 3 N5380A SMA gt 10 N A N A 1 24 e Full bandwidth full bandwidth 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 matched sma cables adapt to variable spacing Capacitance seen by differential signals 2 Capacitance seen by single ended signals Differential and Single ended Probe Configurations Other configurations at a glance Table 1 3 Probe Head Configurations Band width GHz 4 E2677A Solder in differential gt 10 high bandwidth resistors 5 E2678A Socketed differential gt 10 high bandwidth resistors 6 E2675A Differential browser 5 2 7 E2679A Solder in single ended 5 2 high bandwidth resistors 8 E2676A Single ended browser 6 9 E2678A Socketed differential with 1 2 damped wire accessories 10 E2695A SMA 8 Capacitance seen by differential signals 2 Capacitance seen by single ended signals Cdiff pF 0 27 0 34 0 32 N A N A 0 63 N A Cse 2 pF 0 44 0 56 0 57 0 50 0 65 0 95 N A Starting Page of Performan
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