Keysight Technologies InfiniiMax III Series User Manual Download Page 87

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5. Performance Verification

Bandwidth Performance Verification

Touchstone File

(1250-1749 & N5443A)

Cut and paste the following text and save in a text file named

Adapter_1250_1749___OutputSideOfFixture_N5443A.s2p

. This file is used in

Step 7

on page 81.

NOTE

You’ll find the following data on the Adobe AIR version of the Probe Resource Center

(PRC). Copying this data from the PRC is the simplest most reliable method to get

the data. To download the PRC, visit http://www.Keysight.com/find/PRC.

! freq S11 S21 S12 S22

!Port 1=female 3.5mm connector of 1250-1749 adaptor, Port 2=probe point on N5443A fixture

# Hz S DB R 50

50000000.000000 -49.528411 110.869328 -0.026318 -4.180881 -0.025870 -4.223772 -67.754661 -176.153454

51165694.067857 -49.988587 91.181375 -0.025517 -4.280433 -0.024720 -4.324675 -68.880923 -164.662475

52358564.988911 -50.522661 71.165730 -0.024697 -4.382306 -0.023543 -4.427929 -70.190588 -152.193533

53579246.361093 -51.148132 50.755093 -0.023858 -4.486555 -0.022339 -4.533591 -71.710672 -138.296498

54828386.553961 -51.883012 29.852775 -0.023000 -4.593234 -0.021107 -4.641716 -73.455393 -122.229302

56106649.053084 -52.745137 8.328609 -0.022122 -4.702400 -0.019846 -4.752362 -75.383422 -102.800368

57414712.812455 -53.751090 -13.985221 -0.021223 -4.814111 -0.018557 -4.865588 -77.285484 -78.453735

58753272.615119 -54.914477 -37.296089 -0.020304 -4.928426 -0.017237 -4.981454 -78.641246 -48.710849

60123039.442212 -56.136285 -60.059373 -0.019410 -5.044783 -0.015920 -5.098670 -78.505514 -17.996645

61524740.850598 -56.339746 -65.253403 -0.018972 -5.157375 -0.014907 -5.204612 -74.600997 0.238726

62959121.359318 -56.549712 -70.614809 -0.018523 -5.272593 -0.013871 -5.313024 -71.786638 16.619539

64426942.845040 -56.765722 -76.151300 -0.018064 -5.390497 -0.012811 -5.423964 -69.665881 32.555062

65928984.946733 -56.987159 -81.870529 -0.017595 -5.511150 -0.011726 -5.537491 -68.056466 48.587163

67466045.479778 -57.213226 -87.779882 -0.017115 -5.634616 -0.010616 -5.653665 -66.866526 65.023732

69038940.859729 -57.442930 -93.886209 -0.016623 -5.760962 -0.009481 -5.772548 -66.050126 82.119449

70648506.535956 -57.624590 -110.396155 -0.016195 -5.894832 -0.009445 -5.897344 -64.822182 90.200098

72295597.435395 -57.551220 -142.499775 -0.015869 -6.038769 -0.011116 -6.029813 -62.891316 82.809542

73981088.416647 -57.272309 -174.184620 -0.015537 -6.186061 -0.012827 -6.165369 -61.314332 74.543748

75705874.734666 -56.913609 155.103108 -0.015196 -6.336786 -0.014577 -6.304085 -59.987656 65.638030

77470872.516269 -56.615036 125.361237 -0.014847 -6.491025 -0.016368 -6.446035 -58.847549 56.200571

79277019.246748 -56.489319 96.190629 -0.014491 -6.648860 -0.018202 -6.591294 -57.851655 46.281987

81125274.267814 -56.086810 77.082571 -0.015125 -6.803245 -0.019025 -6.749358 -57.369635 49.668006

83016619.287160 -55.464039 64.084902 -0.016432 -6.956544 -0.019176 -6.917300 -57.199270 61.953448

84952058.899892 -54.917900 50.564549 -0.017770 -7.113416 -0.019329 -7.089158 -57.075871 74.341353

86932621.122130 -54.439335 36.470021 -0.019138 -7.273947 -0.019487 -7.265023 -57.007441 86.897368

88959357.937037 -54.018288 21.746324 -0.020539 -7.438220 -0.019648 -7.444988 -57.001200 99.698955

91033345.853589 -54.097863 14.550734 -0.021520 -7.608109 -0.020285 -7.619545 -56.504223 102.747003

93155686.478363 -54.688270 15.600999 -0.022057 -7.783797 -0.021424 -7.788273 -55.536632 95.350174

95327507.100664 -55.335875 16.745463 -0.022606 -7.963581 -0.022589 -7.960934 -54.662417 87.625100

97549961.291281 -56.051127 18.007724 -0.023168 -8.147556 -0.023782 -8.137620 -53.867407 79.587653

99824229.515220 -56.847547 19.421327 -0.023744 -8.335819 -0.025002 -8.318424 -53.140655 71.244030

102151519.758706 -57.028409 32.229328 -0.024811 -8.518103 -0.025270 -8.526257 -53.229937 71.824660

104533068.170813 -57.203696 45.767193 -0.025943 -8.703769 -0.025461 -8.740842 -53.390484 73.175172

106970139.720046 -57.452641 59.100435 -0.027102 -8.893763 -0.025657 -8.960430 -53.558351 74.544470

109464028.866236 -57.799354 72.247228 -0.028288 -9.088187 -0.025857 -9.185138 -53.734081 75.931667

112016060.248099 -58.205431 76.407713 -0.028945 -9.298506 -0.026957 -9.388528 -53.893471 72.124731

114627589.386818 -58.637120 78.159701 -0.029466 -9.516820 -0.028326 -9.589435 -54.061522 66.848820

117300003.406038 -59.105065 79.877381 -0.029999 -9.740223 -0.029727 -9.795026 -54.247548 61.492888

120034721.768639 -59.584054 81.490201 -0.030537 -9.968856 -0.031146 -10.005562 -54.448452 56.117498

122833197.030691 -57.847096 78.713336 -0.030505 -10.204469 -0.031384 -10.233007 -54.242926 55.717121

125696915.612984 -56.373050 75.635986 -0.030472 -10.445575 -0.031627 -10.465755 -54.037670 55.307462

128627398.590544 -55.090007 72.338796 -0.030439 -10.692303 -0.031876 -10.703929 -53.832682 54.888298

131626202.500562 -54.306379 66.932129 -0.030205 -10.948451 -0.031570 -10.953764 -53.494817 54.988088

134694920.169152 -53.880297 59.647516 -0.029793 -11.213741 -0.030773 -11.214700 -53.052945 55.558900

137835181.557386 -53.486272 52.104536 -0.029372 -11.485216 -0.029957 -11.481720 -52.622790 56.157336

141048654.627056 -53.508282 45.730461 -0.030159 -11.752986 -0.030107 -11.751715 -52.284361 56.421252

144337046.226616 -54.420700 42.364200 -0.033536 -12.005802 -0.032342 -12.021139 -52.117964 55.931890

147702102.997784 -55.470568 39.211352 -0.036994 -12.264512 -0.034630 -12.296845 -51.951089 55.430858

151145612.303275 -55.576811 37.842963 -0.039670 -12.539287 -0.036049 -12.583748 -51.944456 54.446241

154669403.176167 -53.732676 40.105390 -0.040639 -12.841065 -0.035607 -12.887130 -52.278075 52.497820

158275347.291397 -52.178102 42.969822 -0.041630 -13.149878 -0.035156 -13.197584 -52.635093 50.550437

161965359.959910 -52.004259 45.986266 -0.041770 -13.470541 -0.034641 -13.513759 -52.766109 50.989381

165741401.145982 -53.013032 48.920340 -0.041128 -13.802856 -0.034066 -13.835944 -52.680124 53.568723

169605476.508267 -54.185614 51.938022 -0.040471 -14.142918 -0.033479 -14.165639 -52.594837 56.183902

173559638.465103 -53.353535 46.144495 -0.039591 -14.466058 -0.034106 -14.495652 -52.681223 53.054380

177605987.284668 -52.395549 39.070167 -0.038666 -14.793912 -0.034887 -14.832523 -52.797494 49.218907

181746672.200541 -52.169589 35.688968 -0.038595 -15.133923 -0.035919 -15.178503 -53.030384 48.315967

185983892.553281 -52.903697 37.808367 -0.039749 -15.488188 -0.037303 -15.534312 -53.432713 51.562899

190319898.958608 -53.671016 40.107673 -0.040862 -15.851057 -0.038670 -15.897833 -53.787995 54.424805

194756994.502833 -53.801795 43.465778 -0.041123 -16.226810 -0.039438 -16.262335 -53.156789 52.243875

199297535.966146 -53.943086 46.823120 -0.041390 -16.611323 -0.040225 -16.635334 -52.557852 50.013514

203943935.074433 -53.374619 45.618787 -0.044122 -16.994561 -0.041601 -17.016611 -52.209576 52.395133

208698659.780268 -52.713418 43.564007 -0.047367 -17.384868 -0.043113 -17.406702 -51.910498 55.677837

213564235.573780 -53.477228 35.859633 -0.049667 -17.770211 -0.046242 -17.803783 -51.477695 53.799018

218543246.824077 -55.032566 26.702114 -0.051641 -18.159282 -0.050036 -18.209336 -51.013276 49.886314

223638338.151939 -53.869091 26.218432 -0.052370 -18.572260 -0.051093 -18.629032 -51.239963 47.730420

228852215.834522 -51.902344 30.275653 -0.052588 -19.000945 -0.051017 -19.060434 -51.778596 46.370604

Summary of Contents for InfiniiMax III Series

Page 1: ...Keysight InfiniiMax III Series Probes User s Guide...

Page 2: ...described in this document are furnished under a license and may be used or copied only in accor dance with the terms of such license Restricted Rights Legend If software is for use in the performanc...

Page 3: ...A InfiniiMax III Solder in Probe Head 54 N5444A InfiniiMax III 2 92 mm 3 5 mm SMA Probe Head 62 3 Performance Specifications Characteristics 4 Calibration Deskew Procedure Procedure 70 5 Performance V...

Page 4: ...4 Contents...

Page 5: ...oday s high density ICs and circuit boards Four different InfiniiMax III probe amplifiers ranging from 16 GHz to 30 GHz are available for matching your probing solution to your performance and budget...

Page 6: ...bring up the Probe dialog box in the oscilloscope GUI Light Button Press this button to turn the LED headlights on the browser probe head on off Pressing and holding this button will ramp the intensi...

Page 7: ...nnected This enables you to quickly know which probe is connected to each channel without having to trace cables back to the oscilloscope inputs Channel Connection CAUTION Refer to Proper Handling Tec...

Page 8: ...lbs Probe Amplifier Bandwidth Upgrades The InfiniiMax III probe amplifiers are upgradeable When you order a probe bandwidth upgrade you receive a new probe with a new model number and new serial numbe...

Page 9: ...AUTION When storing the probe it is best to coil the cable in a large radius and avoid a net twist in the cable during the process This can be done in a similar manner to how garden hoses or extension...

Page 10: ...lowing picture Figure 4 Wrist Strap Connected to Oscilloscope Ground Socket The static safe work station shown in Figure 3 uses two types of ESD protection Conductive table mat and wrist strap combina...

Page 11: ...se the following steps when connecting your probe to the oscilloscope 1 If the Device Under Test DUT is not grounded to the oscilloscope via the AC mains ground connect the DUT ground to the oscillosc...

Page 12: ...gle the probe head up and down or twist it to remove the connectors from the sockets This can damage the pins in the amplifier or the probe head itself Disconnecting a Probe from an Oscilloscope Chann...

Page 13: ...5 mm SMA head The only exception is when the DUT is not grounded to the oscilloscope via the AC mains ground In this case connect the DUT ground to the oscilloscope ground before moving the probe An e...

Page 14: ...diagram shows the InfiniiMax III and InfiniiMax III probes and probe heads The diagram is not drawn to scale Figure 6 InfiniiMax III III Probing System For extreme temperature testing use the N5450B I...

Page 15: ...ON None of the other probe heads are designed for extreme temperature testing The N5449A includes one N2873A probe The adapter is specifically tuned for the N2873A probe Similar probes 1 input can be...

Page 16: ...power output on the DCA X 86100D wideband oscilloscope if the module being used has this receptacle or to the 1143A power module Finally connect the other side of the adapter to the InfiniiMax III pr...

Page 17: ...InfiniiMax amplifier pull the probe head connectors straight out of the sockets When connecting a probe head to an amplifier push straight in also Never bend the probe head in order to pop it loose fr...

Page 18: ...ed so they can be copied and pasted into user s SPICE simulations Chapter 6 Performance Plots shows the matching between the measured input impedance and these modeled input impedances for the various...

Page 19: ...40A N5447A N5441A N5445A and N5444A Probe Heads Figure 8 SPICE circuit to use for N5440A N5447A N5441A N5445A and N5444A probe heads The input impedance is only a function of the probe head the amplif...

Page 20: ...N5439A_450ohmZIF 1 2 c1 1 10 20f l1 10 11 1 5n r1 11 2 180 rp1 1 3 180 lp1 3 4 1 5n cp1 4 5 24f cp2 5 6 100n rp2 6 1 500 rp3 5 1 50k cm1 2 7 24f lm1 7 8 1 5n rm1 8 5 180 cm2 2 9 100n rm2 9 5 500 rm3 2...

Page 21: ...4 5 55f cp2 5 6 100n rp2 6 1 500 rp3 5 1 50k cm1 2 7 55f lm1 7 8 2 5n rm1 8 5 65 cm2 2 9 100n rm2 9 5 500 rm3 2 5 50k rom 5 0 130 lom 5 0 30u ends N5445A Browser Probe Head 1 mm span subckt N5445A_Brw...

Page 22: ...3n cp1 4 5 30f cp2 5 6 100n rp2 6 1 500 rp3 5 1 50k cm1 2 7 30f lm1 7 8 2 3n rm1 8 5 250 cm2 2 9 100n rm2 9 5 500 rm3 2 5 50k rom 5 0 40 lom 5 0 30u ends N5445A Browser Probe Head 3 mm span subckt N54...

Page 23: ...3 13 0 14 0 z0 48 3903 td 4 5p t14 14 0 15 0 z0 50 1144 td 4 5p t15 15 0 16 0 z0 51 9126 td 4 5p t16 16 0 17 0 z0 51 1671 td 4 5p t17 17 0 18 0 z0 48 7858 td 4 5p t18 18 0 19 0 z0 49 7704 td 4 5p t19...

Page 24: ...imulations Chapter 6 Performance Plots shows the matching between the measured input impedance and these modeled input impedances for the various probe heads The following diagram shows the SPICE circ...

Page 25: ...d to get the data N2838A PC Board ZIF Tip N5439A ZIF Probe Head subckt N2838A_N5439A_PcbZif 1 2 Cblkp 6 13 100n Cblkn 2 14 100n Cg1p 1 4 26 1f Cg1n 5 6 26 1f Cg2p 1 10 128 4f Cg2n 12 6 128 4f Cm2 2 8...

Page 26: ...6 13 100n Cblkn 2 14 100n Cg1p 1 4 20 7f Cg1n 5 6 20 7f Cg2p 1 10 152 2f Cg2n 12 6 152 2f Cm2 2 8 4 12f Cm3 2 3 6 46f Rg1p 4 6 52 4 Rg1n 2 5 52 4 Rg2p 9 6 142 Rg2n 2 11 142 Rm2 1 7 172 4 Rm3 1 15 67 9...

Page 27: ...27 1 Using InfiniiMax III Series Probes Simplified InfiniiMax III Schematic Simplified InfiniiMax III Schematic NOTE Do not use this simplified schematic as a SPICE model...

Page 28: ...28 1 Using InfiniiMax III Series Probes Simplified InfiniiMax III Schematic...

Page 29: ...iiMax III ZIF Zero Insertion Force Probe Head 38 N2836A InfiniiMax III Solder in Probe Head 47 N5441A InfiniiMax III Solder in Probe Head 54 N5444A InfiniiMax III 2 92 mm 3 5 mm SMA Probe Head 62 This...

Page 30: ...n the browser see Figure 10 Using the LED Headlights A pair of LED headlights are integrated into the tip of the browser to illuminate the probing area for better visibility The headlights are control...

Page 31: ...st closely matches Then set this value in the Probe Calibration dialog box on the oscilloscope Using the Browser Mounting Holes There are two holes on the back side of the browser These holes are ther...

Page 32: ...ndling CAUTION Do not apply too much force when browsing The weight of the probe in your hand should be sufficient The axial travel of the probe is about 15 mils 0 4 mm CAUTION The browser s protectiv...

Page 33: ...rtical compliance of the probe positioner Clamp the browser into the positioner aligning the browser s slot with the positioners gripping pad While holding the browser loosen the main knob and positio...

Page 34: ...ferential Browser Probe Head Replaceable Parts The following parts are replaceable N5476A replacement browser tips qty 4 N5445 68700 replacement browser ground blades qty 4 N5445 68701 replacement bro...

Page 35: ...our DUT as shown in Figure 17 on page 36 Because the probe head is magnetically connected instead of mechanically connected to the QuickTip you can effortlessly connect and disconnect to each QuickTip...

Page 36: ...th the N2848A Probe Head and N2849A QuickTip CAUTION Do not replace or repair the N2849A QuickTip s resistor or ground leads Attempting to do so will damage the ability of the tip to mate with the N28...

Page 37: ...erformance of the probe NOTE Soldering the ground wires is not required when making differential or single ended or leads measurements When soldering to a via always trim the lead close to the via s u...

Page 38: ...tip form factor Because of their extremely low loading the ZIF tips can be left on the DUT as the probe head is moved from one probing site to the next For a set of 5 ZIF tips with plastic forks to a...

Page 39: ...bodies different than this that is resistor bodies close together or spread way apart use Precision Probe to perform an AC calibration of the probe the AC calibration will capture the response proper...

Page 40: ...fork allows you to handle these small tips Figure 20 InfiniiMax III ZIF tips ZIF tips can be carefully handled with your fingertips and reinserted into a plastic fork if necessary CAUTION Be careful n...

Page 41: ...to keep the ZIF tip in the plastic fork so it is easy to hold on to 3 Flux the ZIF tip wires and DUT leads 4 Position the ZIF tip and carefully reflow the solder NOTE Make sure the gold traces on the...

Page 42: ...cal response Because of their small size probing accessories are often delicate It is important to mechanically secure your probes to protect both your equipment and designs from damage There are seve...

Page 43: ...s the Keysight N2787A Figure 25 Using putty with the N2787A 3D Probe Positioner The same positioner can also be used to support your probe amplifier as shown in Figure 15 on page 33 Low temperature Ho...

Page 44: ...cables Do not crush cables Do not use aggressive adhesives or high temperatures Connecting the ZIF Probe Head to the ZIF Tips To connect a ZIF probe head to a ZIF tip first solder the ZIF tip to the...

Page 45: ...d The gold traces on the tips should be on the same side as the lever NOTE You will get more repeatable results if you orient your connection perpendicular to your device as shown in Figure 29 Figure...

Page 46: ...rtion Force Probe Head CAUTION Always use the lever when inserting or removing ZIF tips Replaceable Parts N5439 65201 Strain Relief Putty N2838A 25 GHz PC board ZIF tips qty 5 N5440A 28 GHz ceramic ZI...

Page 47: ...Max III Solder in Probe Head The N2836A InfiniiMax III solder in probe head is an economical semi permanent connection that provides up to 26 GHz of system bandwidth Figure 30 N2836A InfiniiMax III so...

Page 48: ...probe the AC calibration will capture the response properly Increasing the spacing to 250 mil will degrade the performance some but Precision Probe can be used to compensate or qualify the effect CAU...

Page 49: ...g of the FR4 tip PC board 0 381 mm 0 015 in diameter RMA flux standard tin lead solder wire Fine stainless steel tweezers Rosin flux pencil RMA type Kester 186 or equivalent Diagonal cutters Magnifier...

Page 50: ...tip is free of excess solder Grab each resistor lead or body with tweezers and pull very gently up Touch the soldering iron to solder joint just long enough for the resistor to come free of the probe...

Page 51: ...ole s for new resistors or wires by ensuring that the holes are filled with solder If they are not use the soldering iron and solder to fill the holes Again do not leave the iron in contact with the t...

Page 52: ...o tip pc board will have a 90 degree bend to go into through hole in the tip pc board The orientation of the lead is not important Figure 34 Bending axial resistor leads 5 Holding the resistor lead or...

Page 53: ...ole melts the resistor lead will fall into the hole Remove the soldering iron as soon as the lead falls into the hole Again the thermal mass of the joint is very small so extra dwell time is not neede...

Page 54: ...N When using the N5450B extension cable do not subject the InfiniiMax III probe amplifier or probe head other than the N5441A solder in probe head to extreme temperatures Figure 36 N5441A InfiniiMax I...

Page 55: ...ncluded with each probe head 0 005 wire can be used for attaching to small vias To replace wires complete the following steps 1 Begin by clamping the probe head GENTLY Figure 37 Clamping the Probe Hea...

Page 56: ...er from the underside and insert a new piece of wire It is best to shape the wire into an L before attempting to insert CAUTION Try not to dwell with the iron in contact with the probe head Figure 40...

Page 57: ...gure 42 Trim Wire Stubs 7 Use the included trim gauge to cut the wire lengths Doing so will ensure the best performance from your probe head Figure 43 Trim Guage Placed on Wires Figure 44 Removing Exc...

Page 58: ...e is very similar to that for the ZIF probe tips used with the N5439A probe head 1 Apply flux to your target leads Figure 45 Applying Flux 2 Tin the leads with a small amount of solder Figure 46 Tin t...

Page 59: ...t to mechanically secure your probes to protect both your equipment and designs from damage There are several methods that Keysight recommends Tack putty Keysight recommends the use of tack putty for...

Page 60: ...t gun set on low Only heat the hot glue enough to remove it Figure 51 Using low temperature hot glue to secure a probe head General Tips on Strain Relief Keep in mind that different accessories have d...

Page 61: ...1 2 InfiniiMax III Probe Heads N5441A InfiniiMax III Solder in Probe Head Replaceable Parts Extra wire for solder in probe head only 01169 81301 7 mil 01169 21306 5 mil N5439 65201 Strain Relief Putty...

Page 62: ...proximately 1 kHz the termination is 55 Ohms to the termination voltage and above approximately 10 kHz the termination is 50 Ohms to 0 9 times the termination voltage The termination voltage range is...

Page 63: ...63 2 InfiniiMax III Probe Heads N5444A InfiniiMax III 2 92 mm 3 5 mm SMA Probe Head Figure 53 N5444A Probe Head With N5448A Head Flex Cables Attached Replaceable Parts N5448A 2 92mm Extension Cables...

Page 64: ...64 2 InfiniiMax III Probe Heads N5444A InfiniiMax III 2 92 mm 3 5 mm SMA Probe Head...

Page 65: ...illoscope The only exception is the N5441A solder in probe head The N5441A solder in probe head temperature range is from 55 C to 150 C for up to 250 test cycles The N5441A is compatible with the N545...

Page 66: ...k 2 Rse 50 k 2 each input to ground Rdiff 100 k 2 Rcm 25 k 2 Rse 50 k 2 each input to ground Rdiff 100 k 2 Rcm 25 k 2 Input Resistance 10 kHz Rse 500 each input to ground Rdiff 1 k Rcm 250 Rse 500 eac...

Page 67: ...ce Rse 50 k 2 each input to ground Rdiff 100 k 2 Rcm 25 k 2 Rse 50 k 2 each input to ground Rdiff 100 k 2 Rcm 25 k 2 Rse 50 k 2 each input to ground Rdiff 100 k 2 Rcm 25 k 2 Input Resistance 10 kHz Rs...

Page 68: ...25 k 2 Input Resistance 10 kHz 50 to 0 909 Vterm Rse 500 each input to ground Rdiff 1 k Rcm 250 Input Voltage Range Differential or Single Ended 1 6Vpp 0 8V HD2 3 34 dBc 2 5Vpp 1 25V HD2 3 38 dB 1 6V...

Page 69: ...ibration Deskew Fixture This fixture enables you to not only calibrate deskew your InfiniiMax III probe but it also ensures you properly position the probe amplifier during the procedure via the plast...

Page 70: ...ded with N5443A is connected to the fixture as shown below 2 Hold the N5443A upright and connect the fixture to the Cal Out on the oscilloscope Turn the nut on the Cal Out counter clockwise to tighten...

Page 71: ...holder The amplifier can slide up and down in the holder to adjust the probe head position CAUTION Always wear an ESD wrist strap when working with active probes Not doing so can result in the probe b...

Page 72: ...5441A solder in probe head If you are using the browser probe head then you do not need to adjust the shape of the tips 7 Connect your probe head to the amplifier 8 Position the probe head wires if yo...

Page 73: ...e oscilloscope 10 In the Probe Setup dialog box click on the Calibrate Probe button This will open the Probe Calibration dialog box 11 In the Probe Calibration dialog box select the probe head you are...

Page 74: ...ad to the calibration deskew fixture The fixture has three spring loaded fingers shown below that clamp probe head wires to the fixture if you are using the ZIF probe head or the Solder in probe head...

Page 75: ...ing loaded fingers Try different angles to determine your optimum method CAUTION When connecting the probe head to the fixture do not press down with much force or you could snap off the fixture from...

Page 76: ...that the particular combination of probe amplifier probe head and oscilloscope channel input has been calibrated NOTE Any time you use a new probe head type a new probe amplifier or a different channe...

Page 77: ...ures described in this chapter to accurately measure the performance It is also important to note that the performance measured here is of the probe by itself Keysight high performance real time scope...

Page 78: ...o be capable of using a Touchstone file to de embed at a port Needs to have bias port for port 1 of the VNA i e has internal bias T s and a BNC port that allows bias to be applied to port 1 Keysight N...

Page 79: ...nectors can be seen in Figure 55 using the N4692A 00F ECal module or equivalent 2 92 mm cal kit CAUTION As with all precision connector interfaces make sure to torque all connections using the proper...

Page 80: ...enough that the tip wires can easily reach the pinchers on the PV fixture b Form the coax cables so that the tip wires are close to the pincher points before trying to connect the tip wires The conne...

Page 81: ...he VNA a Create a Touchstone file for the 1250 1749 and N5443A PV fixture by cutting and pasting the text in Touchstone File 1250 1749 N5443A on page 87 Name the file Adaptor_1250_1749___OutputSideOfF...

Page 82: ...ne file for the 5062 1247 and N5477A by cutting and pasting the text in Touchstone File 5062 1247 N5477A on page 91 Name the file Adapter_5062_1247___Adapter_N5477A s2p b Go to menu Calibration Fixtur...

Page 83: ...ation should be approximately 15 3 dB but can vary a few tenths of a dB either way c Display should look like Figure 59 If it looks noticeably different the probe tip wires may not be making contact u...

Page 84: ...sfer function of the probe or vout vin b Again adjust the Reference Level in the scale menu so the 50MHz point is at center screen The display should look like Figure 60 c Turn on a marker and adjust...

Page 85: ...ements are more repeatable with it and it is easier to make a proper connection To measure the performance of the N5445A Browser with the N2803A probe amp the same procedure as described above is used...

Page 86: ...86 5 Performance Verification Bandwidth Performance Verification Figure 61 N2787A 3D Probe Positioner used to measure the N5445A browser with the N2803A amp...

Page 87: ...56 0 023782 8 137620 53 867407 79 587653 99824229 515220 56 847547 19 421327 0 023744 8 335819 0 025002 8 318424 53 140655 71 244030 102151519 758706 57 028409 32 229328 0 024811 8 518103 0 025270 8 5...

Page 88: ...47 837255 0 085212 47 869091 48 549704 24 186062 588733303 689526 43 579719 5 409896 0 088905 48 969584 0 085630 48 973225 47 693589 29 030108 602458962 082744 43 188600 6 651222 0 088581 50 106860 0...

Page 89: ...72 106 082540 3720727268 256326 36 503975 88 649973 0 249350 51 414339 0 246198 51 364288 32 772003 112 053147 3807471862 350752 37 228873 78 216506 0 256868 44 217344 0 244479 44 167759 33 099110 120...

Page 90: ...9 673154 120 894595 0 601843 37 884863 0 593646 37 981253 19 659181 138 614133 18249020154 271370 18 806881 174 276372 0 618695 72 289682 0 609299 72 420566 18 994739 153 494312 18674475645 032219 19...

Page 91: ...30393 19 386071 0 038533 19 423615 44 479324 46 062923 99824229 515220 43 379343 18 545057 0 031118 19 827438 0 039011 19 871267 44 685054 44 717887 102151519 758706 43 358365 17 974030 0 031578 20 28...

Page 92: ...118 113 019415 44 476646 132 751889 588733303 689526 52 158849 129 322945 0 077527 115 683331 0 076310 115 642471 44 375697 139 772542 602458962 082744 52 577492 139 013843 0 078956 118 369379 0 07750...

Page 93: ...18 87 585475 0 184604 8 946980 0 185385 8 925870 38 684389 166 652649 3807471862 350752 40 807807 83 624174 0 186601 25 932133 0 187600 25 905716 42 455757 159 411784 3896238809 620269 43 193297 60 96...

Page 94: ...373848 77 107861 0 381565 106 681389 0 381826 106 752623 26 695748 57 166454 18249020154 271370 21 671814 12 233474 0 399919 25 179522 0 406146 25 266365 22 459690 107 844721 18674475645 032219 26 74...

Page 95: ...wire resistance accuracy Power Supply for Probe DSO DSA 90000 X series oscilloscope or 1134A power supply with N5477A Autoprobe adapter see the Bandwidth Performance Verification procedure No substitu...

Page 96: ...ect the probe amplifier to the oscilloscope or power supply so it is powered 4 Connect the ZIF or solder in probe head to the probe amp and insert it into the PV fixture as shown Figure 62 5 Depress t...

Page 97: ...97 5 Performance Verification DC Input Resistance Performance Verification Figure 63 Measuring the single ended input resistance of a ZIF or solder in probe head...

Page 98: ...does not impact this DC measurement 2 Plug the probe amplifier into the browser 3 Clamp the browser with the N2787A probe positioner 4 Hold the browser with one hand and loosen the arm locking knob on...

Page 99: ...Work Order Number Recommended next test date Date Probe Head only required to test one Test Limits Result Pass Fail Bandwidth Performance Test N5439A with N5440A 26 GHz N5445A 28 GHz DC Input Resistan...

Page 100: ...100 5 Performance Verification Performance Test Record...

Page 101: ...plied to enhance the probe accuracy Probe correction is computed from the s parameters of the various probe components such as probe heads probe amps and accessories Typically the largest variation in...

Page 102: ...ponses are shown Time Response to an Ideal Step at Probe Tip This is the classical step response which is defined as the time response to an ideal zero rise time step present at the probe tip This can...

Page 103: ...103 6 Performance Plots N2836A 26 GHz Solder In Head with N2803A N2836A 26 GHz Solder In Head with N2803A...

Page 104: ...104 6 Performance Plots N2836A 26 GHz Solder In Head with N2803A...

Page 105: ...105 6 Performance Plots N2836A 26 GHz Solder In Head with N2803A...

Page 106: ...106 6 Performance Plots N2838A N5439A 25 GHz PCB ZIF Tip Head with N2803A N2838A N5439A 25 GHz PCB ZIF Tip Head with N2803A...

Page 107: ...107 6 Performance Plots N2838A N5439A 25 GHz PCB ZIF Tip Head with N2803A...

Page 108: ...108 6 Performance Plots N2838A N5439A 25 GHz PCB ZIF Tip Head with N2803A...

Page 109: ...109 6 Performance Plots N5440A N5439A 28 GHz Ceramic ZIF Tip Head with N2803A N5440A N5439A 28 GHz Ceramic ZIF Tip Head with N2803A...

Page 110: ...110 6 Performance Plots N5440A N5439A 28 GHz Ceramic ZIF Tip Head with N2803A...

Page 111: ...111 6 Performance Plots N5440A N5439A 28 GHz Ceramic ZIF Tip Head with N2803A...

Page 112: ...112 6 Performance Plots N5447A N5439A 28 GHz Ceramic High Sensitivity ZIF Tip Head with N2803A N5447A N5439A 28 GHz Ceramic High Sensitivity ZIF Tip Head with N2803A...

Page 113: ...113 6 Performance Plots N5447A N5439A 28 GHz Ceramic High Sensitivity ZIF Tip Head with N2803A...

Page 114: ...114 6 Performance Plots N5447A N5439A 28 GHz Ceramic High Sensitivity ZIF Tip Head with N2803A...

Page 115: ...115 6 Performance Plots N5441A 16 GHz Solder In Head with N2803A N5441A 16 GHz Solder In Head with N2803A...

Page 116: ...116 6 Performance Plots N5441A 16 GHz Solder In Head with N2803A...

Page 117: ...117 6 Performance Plots N5441A 16 GHz Solder In Head with N2803A...

Page 118: ...118 6 Performance Plots N5444A 28 GHz SMA 2 92 mm Head with N2803A N5444A 28 GHz SMA 2 92 mm Head with N2803A...

Page 119: ...119 6 Performance Plots N5444A 28 GHz SMA 2 92 mm Head with N2803A...

Page 120: ...120 6 Performance Plots N5445A 30 GHz Browser Head 1 mm span with N2803A N5445A 30 GHz Browser Head 1 mm span with N2803A...

Page 121: ...121 6 Performance Plots N5445A 30 GHz Browser Head 1 mm span with N2803A...

Page 122: ...122 6 Performance Plots N5445A 30 GHz Browser Head 1 mm span with N2803A...

Page 123: ...123 6 Performance Plots N5445A 30 GHz Browser Head 2 mm span with N2803A N5445A 30 GHz Browser Head 2 mm span with N2803A...

Page 124: ...er Head 2 mm span with N2803A NOTE For browser spans of 2 and 3mm the biggest effect is in the frequency and time responses The input loading is nearly the same as for the 1mm span except that the imp...

Page 125: ...125 6 Performance Plots N5445A 30 GHz Browser Head 3 mm span with N2803A N5445A 30 GHz Browser Head 3 mm span with N2803A...

Page 126: ...er Head 3 mm span with N2803A NOTE For browser spans of 2 and 3mm the biggest effect is in the frequency and time responses The input loading is nearly the same as for the 1mm span except that the imp...

Page 127: ...49A QuickTip 35 N5439A ZIF probe head 38 N5440A ceramic ZIF probe tip 39 N5441A solder in probe head 54 N5443A calibration deskew fixture 69 N5444A SMA probe head 62 N5445A differential browser probe...

Page 128: ...128 T Tack putty 42 59 W wrist strap 10 Z ZIF Probe Head 38 connecting 44 ZIF tip 6 soldering 41...

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