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Keysight Technologies E5400-Pro Series Soft Touch Connectorless Probes User’s Guide

3

Operating the E5404A-Pro Series Probes

 

Time Domain Transmission (TDT)

All probes have a loading effect on the circuit when they come in contact 

with the circuit. Time domain transmission (TDT) measurements are useful 

for understanding the probe loading effects as seen at the target receiver. 

The following TDT measurements were made mid-bus on a 50

Ω

 

transmission line load terminated at the receiver. These measurements 

show how the soft touch probes affect an ideal step seen by the receiver 

for various rise times.

Figure 23 TDT measurement schematic (E5404A)

The following plots were made on a Keysight 54750A oscilloscope using 

TDT.

Содержание E5400-Pro Series

Страница 1: ...Keysight Technologies E5400 Pro Series Soft Touch Connectorless Probes User s Guide...

Страница 2: ...EULA a copy of which can be found at http www key sight com find sweula The license set forth in the EULA represents the exclusive authority by which the U S government may use modify distribute or di...

Страница 3: ...Soft Touch Probe for analyzers with 40 pin cable connectors 15 The E5405B Pro Series 17 channel Differential Soft Touch Probe for analyzers with 90 pin cable connectors 16 The E5406A Pro Series 34 cha...

Страница 4: ...on TDT 48 4 Operating the E5402A E5405B and E5406A Pro Series Probes Equivalent Probe Loads 52 Time Domain Transmission TDT 54 Step Inputs 57 Eye Opening 60 5 Circuit Board Design Transmission Line Co...

Страница 5: ...User s Guide 5 Contents 6 Recommended Reading For More Information 74 MECL System Design Handbook 74 High speed Digital Design 74 Designing High speed Target Systems for Logic Analyzer Probing 74 Safe...

Страница 6: ...6 Keysight Technologies E5400 Pro Series Soft Touch Connectorless Probes User s Guide Contents...

Страница 7: ...ries Soft Touch Connectorless Probes User s Guide 1 Overview Installation and Selection of Probing Options The E5400 Pro Series Soft Touch Probes at a Glance 8 Installation Instructions 10 Selection o...

Страница 8: ...ht E5400 pro series soft touch probes are ultra low load connector less probes that work with the Keysight logic analysis modules The probes attach to the PC board using a retention module which ensur...

Страница 9: ...h probe for analyzers with 40 pin cable connectors The E5405B pro series probe is a 17 channel differential connector less soft touch probe for analyzers with 90 pin cable connectors The E5406A pro se...

Страница 10: ...ative OSP finish apply solder paste to the footprint pads prior to re flow or hand soldering Typically dipped and coated finishes do not require extra solder paste 4 Attach the retention module to the...

Страница 11: ...Selection of Probing Options 1 Ensure proper keying by aligning the Keysight logo on the probe with the one on the retention module and place the probe end into the retention module 6 Alternate turni...

Страница 12: ...a probe and your logic analyzer module Table 1 Number of Probes Required Keysight Probe Keysight Logic Analyzer Module 16760A 16753A 16754A 16755A 16756A 16950A 1670 Series 34ch 1680 90 Series 34ch 16...

Страница 13: ...A 16753A 16754A 16755A 16756A 16950A 1670 Series 1680 90 Series 16710 11 12A 16715 16 17A 16740 41 4A 16750 51 52A B 16910A 16911A E5402A right angle 34 channel single ended soft touch probe 1 5 Gb s...

Страница 14: ...he rated maximum state synchronous analysis clock rates of all the supported analyzers with signal amplitudes as small as 250 mV peak to peak A retention module must be installed on the target system...

Страница 15: ...page 12 It is capable of capturing data up to the rated maximum state synchronous analysis clock rates of all the supported analyzers with signal amplitudes as small as 500 mV peak to peak A retention...

Страница 16: ...It is capable of capturing data up to the rated maximum state synchronous analysis clock rates of all the supported analyzers with differential signal amplitudes as small as 200 mV peak to peak A ret...

Страница 17: ...page 12 It is capable of capturing data up to the rated maximum state synchronous analysis clock rates of all the supported analyzers with signal amplitudes as small as 250 mV peak to peak A retention...

Страница 18: ...ace format menu doesn t automatically set thresholds to the proper values You need to go into the threshold menu and select differential custom or standard settings When using the adapter in half chan...

Страница 19: ...es User s Guide 2 Mechanical Considerations Characteristics 20 Probe Dimensions 21 Board Layout Dimensions 25 Pin Outs for the Probes 29 E5386A Half channel Adapter Dimensions 39 Use the following mec...

Страница 20: ...s Guide 2 Mechanical Considerations Characteristics Electrical considerations such as equivalent probe loads input impedance and time domain transmission are shown in chapters 3 and 4 of this manual...

Страница 21: ...ro Series Soft Touch Connectorless Probes User s Guide 21 Mechanical Considerations 2 Probe Dimensions The following figures show the dimensions of the Keysight E5400 pro series soft touch probes Figu...

Страница 22: ...22 Keysight Technologies E5400 Pro Series Soft Touch Connectorless Probes User s Guide 2 Mechanical Considerations Figure 7 E5404A probe dimensions...

Страница 23: ...Keysight Technologies E5400 Pro Series Soft Touch Connectorless Probes User s Guide 23 Mechanical Considerations 2 Figure 8 E5405B probe dimensions...

Страница 24: ...24 Keysight Technologies E5400 Pro Series Soft Touch Connectorless Probes User s Guide 2 Mechanical Considerations Figure 9 E5406A probe dimensions...

Страница 25: ...imensions to layout your PC board pads and holes for use with the soft touch probes Retention Module Dimensions Figure 10 E5403A retention module dimensions NOTE Unless otherwise specified dimensions...

Страница 26: ...26 Keysight Technologies E5400 Pro Series Soft Touch Connectorless Probes User s Guide 2 Mechanical Considerations Figure 11 E5412A retention module dimensions Figure 12 E5403A side by side dimensions...

Страница 27: ...User s Guide 27 Mechanical Considerations 2 Optimal board thickness for this top side mount retention module is shown above Retention modules can be hand soldered into thicker boards but will not for...

Страница 28: ...chanical Considerations Footprint Dimensions The retention module alignment is symmetrical around the pad footprint Figure 14 Top view footprint dimensions drawing notes next page A1 A27 B1 B27 A1 A27...

Страница 29: ...pads is maintained 3 Surface finishes on pads should be HASL immersion silver or gold over nickel 4 This footprint is compatible with retention module Keysight model number E5403A 5 Plated through ho...

Страница 30: ...o probe the following footprint then A8 and B20 are unused They can be grounded not connected left floating or driven These pads are not probed with the E5404A probe A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11...

Страница 31: ...d B20 A8 and B20 are where CK1 and CK2 are driven in the E5406A probe Grounding these pads will allow the user defined threshold in the analyzer to be used as in normal single ended operation If you a...

Страница 32: ...annel Pod D0 A1 0 Whichever pod is connected to Odd on the E5404A probe Ground B1 Whichever pod is connected to Odd on the E5404A probe D1 A2 1 D2 B2 2 Ground A3 D3 B3 3 D4 A4 4 Ground B4 D5 A5 5 D6 B...

Страница 33: ...chever pod is connected to Even on the E5404A probe D1 B15 1 D2 A16 2 Ground B16 D3 A17 3 D4 B17 4 Ground A18 D5 B18 5 D6 A19 6 Ground B19 D7 A20 7 Ground NC Cl ock 2 B20 See pg 30 Ground A21 Clock 2...

Страница 34: ...ND D10 D10 GND D12 D12 GND D14 D14 GND GND D1 D1 GND D3 D3 GND D5 D5 GND D7 D7 GND CLK CLK GND D9 D9 GND D11 D11 GND D13 D13 GND D15 D15 B1 B2 B3 B4 B5 B6 B7 B8 B9 B10 B11 B12 B13 B14 B15 B16 B17 B18...

Страница 35: ...und A12 D7 B12 7 NC A13 Ground B13 NC A14 Clock B14 GND A15 Clock B15 Clock D8 A16 8 Ground B16 D8 A17 D9 B17 Ground A18 D9 B18 9 D10 A19 10 Ground B19 D10 A20 D11 B20 Ground A21 D11 B21 11 D12 A22 12...

Страница 36: ...igure 17 Pad numbers for E5402 E5406A pro series A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15 A16 A17 A18 A19 A20 A21 A22 A23 A24 A25 A26 A27 D0 D1 GND D4 D5 GND CK1 GND CK1 GND D10 D11 GND D14...

Страница 37: ...hannel Pod D0 A1 0 Whichever pod is connected to Odd on the 5402A E5406A probe Ground B1 Whichever pod is connected to Odd on the E5402 E5406A probe D1 A2 1 D2 B2 2 Ground A3 D3 B3 3 D4 A4 4 Ground B4...

Страница 38: ...A17 3 D4 B17 4 Ground A18 D5 B18 5 D6 A19 6 Ground B19 D7 A20 7 Ground Clock 2 B20 Clock Ground A21 Clock 2 B21 Clock D8 A22 8 Ground B22 D9 A23 9 D10 B23 10 Ground A24 D11 B24 11 D12 A25 12 Ground B2...

Страница 39: ...Soft Touch Connectorless Probes User s Guide 39 Mechanical Considerations 2 E5386A Half channel Adapter Dimensions The E5386A half channel adapter works with the 16760A logic analyzer and the soft to...

Страница 40: ...anical Considerations Pin out for the E5386A half channel adapter when connected to E5405B When used with the E5405B pro series differential soft touch probe you need only one half channel adapter The...

Страница 41: ...Logic Analyzer Signal Name Pin Signal Name Pin Channel Pod D0 A2 D0 A1 0 Whichever pod is plugged into bits 0 7 D1 B2 D1 B3 2 D2 A5 D2 A4 4 D3 B5 D3 B6 6 D4 A8 D4 A7 8 D5 B8 D5 B9 10 D6 A11 D6 A10 12...

Страница 42: ...2A or E5406A When used with the E5402A E5406A pro series single ended soft touch probe you need two half channel adapters one adapter for Odd data and one for Even data The table below shows the pin a...

Страница 43: ...D0 A1 0 Whichever pod is connected to bits 0 7 on the odd E5386A D0 B14 0 Whichever pod is connected to bits 0 7 on the even E5386A D1 A2 2 D1 B15 2 D2 B2 4 D2 A16 4 D3 B3 6 D3 A17 6 D4 A4 8 D4 B17 8...

Страница 44: ...44 Keysight Technologies E5400 Pro Series Soft Touch Connectorless Probes User s Guide 2 Mechanical Considerations...

Страница 45: ...onnectorless Probes User s Guide 3 Operating the E5404A Pro Series Probes Equivalent Probe Loads 46 Time Domain Transmission TDT 48 Electrical considerations such as equivalent probe loads input imped...

Страница 46: ...hematic accurately models the probe load out to 6 GHz The figure on the following page shows the agreement between measured impedance and this model Figure 21 Probe load models E5404A 400 R tap C stub...

Страница 47: ...E5404A Pro Series Probes 3 Figure 22 Measured versus modeled input impedance E5404A 1 8 6 10 5 4 2 1 8 6 4 2 Ohms 10 Frequency 6 8 1 2 4 7 9 3 5 6 8 1 2 4 7 9 3 5 6 8 1 2 4 7 9 3 5 6 8 1 2 4 7 9 3 5 6...

Страница 48: ...in transmission TDT measurements are useful for understanding the probe loading effects as seen at the target receiver The following TDT measurements were made mid bus on a 50 transmission line load t...

Страница 49: ...ies Probes 3 Figure 24 TDT measurement at receiver with and without probe load for 150 ps rise time Figure 25 TDT measurement at receiver with and without probe load for 250 ps rise time 50 mV per div...

Страница 50: ...eries Probes Figure 26 TDT measurement at receiver with and without probe load for 500 ps rise time Figure 27 TDT measurement at receiver with and without probe load for 1000 ps rise time 50 mV per di...

Страница 51: ...perating the E5402A E5405B and E5406A Pro Series Probes Equivalent Probe Loads 52 Time Domain Transmission TDT 54 Step Inputs 57 Eye Opening 60 Electrical considerations such as equivalent probe loads...

Страница 52: ...Keysight 54750A TDR TDT using a 50 test fixture The following schematic accurately models the probe load out to 6 GHz The figure on the following page shows the agreement between measured impedance an...

Страница 53: ...A E5405B and E5406A Pro Series Probes 4 Figure 29 Measured versus modeled input impedance E5402A E5404A and E5406A 2 1 8 6 10 4 4 2 1 8 6 4 2 1 8 6 4 2 Ohms 10 1 100 k Frequency 6 8 1 2 4 7 9 3 5 6 8...

Страница 54: ...derstanding the probe loading effects as seen at the target receiver The following TDT measurements were made mid bus on a 50 transmission line load terminated at the receiver These measurements show...

Страница 55: ...ment at receiver with and without probe load for 100 ps rise time Figure 32 TDT measurement at receiver with and without probe load for 250 ps rise time Figure 33 TDT measurement at receiver with and...

Страница 56: ...uch Connectorless Probes User s Guide 4 Operating the E5402A E5405B and E5406A Pro Series Probes Figure 34 TDT measurement at receiver with and without probe load for 1000 ps rise time 50 mV per divis...

Страница 57: ...Vout the signal seen by the logic analyzer The measurements were made on a mid bus connection to a 50 transmission line load terminated at the receiver These measurements show the logic analyzer s res...

Страница 58: ...ide 4 Operating the E5402A E5405B and E5406A Pro Series Probes Figure 36 Logic analyzer s response to 150 ps rise time Figure 37 Logic analyzer s response to 250 ps rise time 100 mV per division 500 p...

Страница 59: ...59 Operating the E5402A E5405B and E5406A Pro Series Probes 4 Figure 38 Logic analyzer s response to 500 ps rise time Figure 39 Logic analyzer s response to 1000 ps rise time 100 mV per division 500...

Страница 60: ...issues all deteriorate the eye opening seen by the logic analyzer The following eye diagrams were measured using E5402A E5405B and E5406A pro series soft touch probes and Eye Scan while probed mid bus...

Страница 61: ...E5402A E5405B and E5406A Pro Series Probes 4 Figure 41 Logic analyzer eye opening for a PRBS signal of 500 mV p p 800 MT s data rate Figure 42 Logic analyzer eye opening for a PRBS signal of 500 mV p...

Страница 62: ...E5402A E5405B and E5406A Pro Series Probes Figure 43 Logic analyzer eye opening for a PRBS signal of 500 mV p p 1500 MT s data rate Figure 44 Logic analyzer eye opening for a PRBS signal of 200 mV p...

Страница 63: ...ctorless Probes User s Guide 5 Circuit Board Design Transmission Line Considerations 64 Recommended Routing 65 Data and Clock Inputs per Operating Mode 67 Thresholds 70 Signal Access 71 Design conside...

Страница 64: ...u are using FR 4 PC board material with a dielectric constant of 4 3 for inner layer traces stripline For example A 0 28 cm long stub in an inner layer has a propagation delay of 20 ps Therefore for a...

Страница 65: ...ad 0 70 pF per channel and make a good electrical connection with a small amount of compression force on a choice of standard PCB platings Additionally the pin contact points are free from the contami...

Страница 66: ...echnologies E5400 Pro Series Soft Touch Connectorless Probes User s Guide 5 Circuit Board Design Figure 46 17 bit differential routing E5405B B1 A1 B27 A27 D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 D11 D12 D1...

Страница 67: ...ata inputs Note 3 In asynchronous timing analysis all inputs including clocks can be acquired and assigned to labels Operating Mode E5405B 17 channel differential soft touch E5405B with half channel a...

Страница 68: ...a multi card set In a multiple card set the clock used for synchronous state analysis must be routed to the clock input on pod 1 of the master module On a single card the clock must be routed to the c...

Страница 69: ...Note 1 In 500 Mb s mode there is one clock input which must be routed to the clock input on pod 1 of the master module in a multi card set The clock inputs on the other pods can be assigned to labels...

Страница 70: ...differential probe to acquire single ended signals If you are using the E5405B probe to acquire single ended signals you should either ground the data inputs or connect them to a dc power supply You...

Страница 71: ...its need to be reordered within a label this leads to additional restrictions in triggering Specifically equalities can be used to evaluate the value of a label with reordered bits but inequalities ca...

Страница 72: ...72 Keysight Technologies E5400 Pro Series Soft Touch Connectorless Probes User s Guide 5 Circuit Board Design Figure 47 E5386A Half channeled adapter...

Страница 73: ...ht E5400 Pro Series Soft Touch Connectorless Probes User s Guide 6 Recommended Reading For More Information 74 A list of recommended reading for more information about systems and high speed digital d...

Страница 74: ...h edition 1988 published by Motorola This handbook can be obtained from ON Semiconductor on the web Go to http onsemi com Click on On line ordering under Documentation Click on the link General search...

Страница 75: ...red rated current voltage and specified type 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 If you ener...

Страница 76: ...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 Safety Symbols Instruction manual symbol the product is m...

Страница 77: ...4A 34 chan single ended 14 15 E5405B 17 chan differential 16 E5406A 34 chan single ended 17 equivalent probe loads E5404A 46 E5405B 52 E5406A 52 eye opening 60 eye scan 67 F footprint dimensions 28 H...

Страница 78: ...retention module attaching 10 dimensions 25 ordering 13 routing 65 S safety symbols 76 selecting a probe 12 signal access 71 single ended probe E5405B 14 15 E5406A 17 solder retention module 10 state...

Страница 79: ...Keysight Technologies E5400 Pro Series Soft Touch Connectorless Probes User s Guide 79...

Страница 80: ...This information is subject to change without notice Keysight Technologies 2016 November 2016 www keysight com...

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