Agilent Technologies J-BERT N4903B Manual técnico

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What's new in J-BERT N4903B software release 7.40?

PCIe®3.0 handling of SKPOS: when the SER/FER analysis option (N4903B-A02/-UA2) is

installed the error counter ignores changes in the number or length of 128/130bit coded

PCIe symbols, the so-called skip ordered sets (SKPOS).

Error Detector Trigger Output:activated whenever a filler symbol or SKPOS is

recognized. This allows the J-BERT pattern sequencer to react on trigger patterns from a

device under test. Requires SER/FER analysis option (N4903B-A02/UA2).

MIPI M-PHY:in case of synch-loss no errors are counted.

Other:

•N4916B de-emphasis signal converter: updated user manuals (zip file rev.

1.1.15.0)

•N4876A 28.4 Gb/s multiplexer: updated user manuals (zip file rev. 1.0.0.9)

Defects fixed in version 7.40

No.

Defect # Description

1SAD00449745RJreportedwrongvalueinjittertolerancecompliance

2 SAD00449746Numberofstepsisnotsetbacktodefaultsettinginjittertolerancecompliance

3 SAD00454710CreateSCPIcommandtoclosepop‐updialogboxes

4 SAD00449864,

SAD00452509,

SAD00454106

Userdocumentationfixes

Known defects in version 7.40

No.

Defect # Description

1 SAD00397466 "PresetInstrumentState"buttondoesnotresetthevariousJitterTolerance

settings.

2 SAD00415423SER!=0orBER!=0afterastop/start

3 SAD00454108N4903BdoesnotworkwithAgilentIO‐Library16.2.UsersshouldnotinstallIO

lib16.2toJ‐BERT

4 SAD00454493Pressing"Outputoff"doesnotturnoffoutputsofconnectedN4916Band

N4876A

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Software History

J-BERT N4903B software release 7.31

Defects fixed in version 7.31

No.

Defect # Description

1 SAD00452788 Jittersourcesaccidentallyturnedoffduringjittertolerancemeasurement

J-BERT N4903B software release 7.30

Error detector bit rate: display of data rate measured by CDR

Support of N4903B-L01/L0x: special option

Other:

•N4916B de-emphasis signal converter: updated user manuals (zip file rev.

1.1.13.0)

•N4876A 28.4 Gb/s multiplexer: updated user manuals (zip file rev. 1.0.0.7)

Defects fixed in version 7.30

No.

Defect # Description

1 SAD00448020 Doubleandmissingpointsinjittertolerancecompliancemeasurementfor

USB3,PCIe3.0

2 SAD00449006 SERaccumulatedresultsnotsavedinthetextfile

3 SAD00449667ReduceintrinsicjitterofdisabledBUJsourceoncertaininstruments

Known defects in version 7.30

No.

Defect # Description

1 SAD00397466

"Preset Instrument State" button does not reset the various Jitter

Tolerance settings.

2 SAD00415423 SER != 0 or BER != 0 after a stop/start

J-BERT N4903B software release 7.20

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Support of Microsoft Windows XP FES:

•Software is now Windows® XP FES (XP For Embedded Systems) compliant

New USB3 compliance patterns added

•New USB3 Pattern with unique position of detect symbol for faster synchronization of

error detector: CP0_2SKP_for_SER_ED.ptrn

•New USB3 Pattern with unique position of detect symbol for faster synchronization of

error detector: CP0_4SKP_for_SER_ED.ptrn

New N4916B De-Emphasis firmware version 1.1.8.0 released

•Bugfix: Amplitude setting below 12.5mV leads to too big amplitude.

•Reliability improvement by enhanced power-up/down sequencing.

Defects fixed in version 7.20

No.

Defect # Description

1 SAD00441279 GUI does no longer allow use of 2^31-1 PRBS in sequences

2 SAD00442285 Jitter Tolerance Characterization Doesn't Work in USB Compliance

(SER) Mode.

Known defects in version 7.20

No.

Defect # Description

1 SAD00397466

"Preset Instrument State" button does not reset the various Jitter

Tolerance settings.

2 SAD00415423 SER != 0 or BER != 0 after a stop/start

J-BERT N4903B software release 7.10

PCIe 3.0 receiver test support:

•PJ jitter sweep curve according to PCIe 3.0 added (requires opt. J10)

•Added a new type of PRBS 2^23-1 with the polynomial X^23 + X^21 + X^16 + X^8

+ X^5 + X^2 + 1 (same as PCIe 3.0 scrambler); named PRBS23P

(:SOURce1::PATTern:: [SELect][?] …,PRBS23P,... ; and sequence language by a

new keyword (PRBS23P) expanded correspondingly)

•Added demo patterns for PCIe 3.0

o8x compliance pattern (for lane 0..7 and 8..15)

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o8x modified compliance pattern (for lane 0..7 and 8..15)

Pattern editor improvements:

•New dynamic insert mode to automatically increase/reduce the pattern length while

editing.

•Indicate illegal pattern length that cannot be rolled out to pattern length granularity

within the maximum pattern length.

•8b/10b editing

oIndicate running disparity errors for 8b/10b applications.

oIndicate that the pattern will cause running disparity errors when being

looped.

o8b/10b symbols can now be used together with SATA OOB(out-of-band

signaling) mode, this allows entry of Z symbols for OOB application using

external channel addition of data out and auy data out.

oDefine running disparity at the start of the pattern.

oOptional automatic correction of running disparity while editing.

•Export even/odd bits to generate Error Detector expected pattern files to be used in

half-rate under-sampling applications.

•Added conversion options that allow to easily convert Standard to Alternate patterns

and vice versa.

oAssign standard pattern to A or B.

oDe-multiplexing standard pattern to A and B.

oMultiplex alternate pattern to a standard pattern.

oDiscard either A or B part on conversion of an alternate pattern to a standard

pattern.

•New and improved Block Edit functionality

oSame Block Edit capabilities in pattern editor and sequence pattern editor.

oSwap, Copy, Reverse traces

oRotate pattern left/right

oRotate pattern to align at an user defined bit sequence or 8b/10b symbol.

oInvert running disparity in 8b/10b mode.

oCorrect running disparity in 8b/10b mode.

•Find and Replace functionality for binary, hex, 8b/10b, OOB and PAM4 modes.

Others:

•Added demo patterns for USB3.0

•New sequences for DisplayPort added

•De-emphasis signal converter N4916B Software update (N4916B zip1.1.4.0)

•28 Gb/s Multiplexer N4876A Software update (N4876A zip 1.0.0.4)

Notes:

•IVI-COM driver version 1.2.7.0 does not yet support Win7 64bit OS.

Known defects in version 7.10

No.

Defect # Description

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1 SAD00397466

"Preset Instrument State" button does not reset the various Jitter

Tolerance settings.

2 SAD00415423 SER != 0 or BER != 0 after a stop/start

Defects fixed in version 7.10

No.

Defect # Description

1 SAD00439923 Manual Error Insertion on Aux-Data Out in Dual-Channel Mode

2 SAD00439001 Self test always shows "Failed" with N4916B connected

3 SAD00435465 USB CP0 for SER Pattern are wrong.

4 SAD00434860 Aux Data - Output Blanking

5 SAD00434422 GUI crashes

6 SAD00430619 N4903B GUI crashes during remote programming

J-BERT N4903B software release 7.00:

Fully independent PRBS and patterns on AUX data output (second channel mode):

•Sequence extension to support two channels (with independent patterns but same

sequence)

•Sequence editor supports second channel

•New type of pattern editor to support two bit streams

•De-emphasis mode: support of external connected power divider to add two bit

streams

•Cross-talk simulation by generating a PRBS with independent starting phase

•Out-Of-Band (OOB) signaling: pattern of second channel controls the electrical state

of DATA OUT

Other:

•Jitter tolerance characterization measurement: ability to enter MIN/MAX curves are

not bonded to option J12 (automated jitter compliance suite) anymore

•Support of 14G version of de-emphasis signal converter N4916B (N4916B zip1.1.0.0)

•Manual input timing adjustment for 28 Gb/s multiplexer N4876A with stand-alone

software (N4876A zip1.0.0.3)

•Added bit rate presets for Fibre Channel, 100GbE-LR4, UHS-II, MIPI M-PHY,

DisplayPort 

•Added demo patterns for MIPI M-PHY

Notes:

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•Software license N4903B-002 is required to use the second data channel capabilities

•IVI-COM driver version 1.2.7.0 does not yet support all commands necessary to

support the De-emphasis Signal Converter N4916B.

•IVI-COM driver version 1.2.7.0 does not yet support 8B/10B Symbol Comparison

functionality.

Known defects in version 7.00

No.

Defect # Description

1 SAD00397466

"Preset Instrument State" button does not reset the various Jitter

Tolerance settings.

2 SAD00415423 SER != 0 or BER != 0 after a stop/start

Defects fixed in version 7.00

No.

Defect # Description

1 SAD00425933 J-BERT N4903B operation with MUX: wrong jitter display in ps.

2 SAD00421925 Jitter Tolerance Remote Programming; (bug in the N4903B remote

programming interface when performing a jitter tolerance

measurement).

3 SAD00422222 Sequencer "Start" button does not appear.

J-BERT N4903B Software Release 6.80:

Support of 8B/10B Frame Error Ratio (FER), Symbol Counters, and Symbol Pattern Editing which

includes:

Enhanced Pattern Editor capabilities:

•Patterns can be viewed and edited in symbol format. This functionality is provided by

Bin/Hex/Symbol Configuration dialog.

•Running disparity and invalid symbols can be viewed and edited in pattern editor in

Symbol format.

•The “Find Pattern” dialog is enhanced to search for symbol pattern.

•Pattern files can be viewed and saved in a new file format “symbol format”.

The following new error ratios are available besides BER, SER and cBER:

•FER (Frame Error Ratio)

•FSR (Filler Symbol Ratio)

•DER (Disparity Error Ratio)

•ISR (Illegal Symbol Ratio)

The “Accumulated Results" window now displays additional results, such as:

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•Calculated Bit/Error count

•Compared/Received/Error Symbol count

•Received/Error Frame count

•Filler Symbol count

•Illegal Disparity Change count

•Illegal Symbol count

•Expected Symbol count

•SER (Symbol Error Ratio)

•cBER (Calculated BER)

•FER (Frame Error Ratio)

•FSR (Filler Symbol Ratio)

•DER (Disparity Error Ratio)

•ISR (Illegal Symbol Ratio)

•Data Rate Ratio

•Auto Resync count

A new cBER setup dialog is introduced which provides the following options:

•To select cBER results based on SER, FER, FSR, DER, ISR.

•To select Automatic or User defined mode for cBER conversion factor.

•Auto align with CDR enabled now supported above 11.5 Gb/s. Does data centre with appropriate

threshold settings. Message dialog will pop up.

•Wild card for filler primitives.

•Support for masking high error counts prior to re-synchronization of the error detector. This

option is available in the Error Detector’s Pattern Sync Setup dialog.

•Jitter characterization and compliance measurement: if DUT loses 8B/10B alignment, now also in

BER mode it is tried to re-establish alignment when sequence supports it.

Better cursor accuracy of N4916B De-emphasis signal converter

•To improve cursor accuracy calibration of N4916B a calibration table is added. This is only usefull

for N4916B’s shipped after the release of J-BERT N4903B SW 6.8 or N4916B’s that have been

returned for factory recalibration.

Notes:

•Software license N4903B-A02 (or UA2) is required to use the 8B/10B SER capabilities

•IVI-COM driver version 1.2.7.0 does not yet support all commands necessary to support the De-

emphasis Signal Converter N4916B.

•IVI-COM driver version 1.2.7.0 does not yet support 8B/10B Symbol Comparison functionality.

Known defects in version 6.80

No.

Defect # Description

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1 SAD00397466

“Preset Instrument State” button does not reset the various Jitter Tolerance settings

2 SAD00415423 SER != 0 or BER != 0 after a stop/start.

3 SAD00421925 N4903B Jitter Tolerance Remote Programming; (bug in the N4903B remote programming

interface when performing a jitter tolerance measurement).

4 SAD00422222 Sequencer "Start" button does not appear.

5 SAD00425933 J-BERT with MUX: wrong jitter display in ps.

Defects fixed in version 6.80

No.

Defect # Description

1 SAD00419580 Programming Guide: SCPI command must not contain spaces.

2 SAD00422787

User Guide: N4093B User's Guide do not provide directions which applies for the N4916B to

connect the Pattern Generator and DUT.

3SAD00415322 GUI crash on opening the instrument state after running the jitter tolerance measurement.

4SAD00422503 Auto align in CDR Mode modifies "Fine Adjust" value but does not display the change.

5na N5990A test automation software issue in which an error message "Specified type of lock

could not be obtained" was launched.

6na N4916B De-Emphasis improvement: calibration table for improved cursor accuracy by droop

compensation

J-BERT N4903B Software Release 6.70:

Multiplexer Control, Second Output Channel (Option 002)

•The N4903B supports the Agilent N4876A 28 Gb/s Multiplexer 2:1. All Multiplexer output parameters can be

controlled via J-BERT UI. J-BERT’s AUX output provides pattern and PRBS to drive the multiplexer.

This allows expanding the pattern generator bit rate of J-BERT up to 28.4 Gb/s and of ParBERT up to 27 Gb/s.

N4876A offers excellent output signal performance for accurate characterization up to 28 Gb/s. For more

information to setup the N4876A see START - N4900 Series Documents - N4876A Getting Started.

•License for Opt. 002 “PRBS and pattern on AUX data” is required for using N4876A

Faster automated jitter characterization

•Reduce the number of measurements points with the ability to enter jitter start values under Jitter

Characterization-Properties-Search

Notes:

•Power Cycle of N4876A is mandatory after updating its software.

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Version 6.60:

Symbol Error Ratio Analysis (Option A02)

•Integrated receiver tolerance testing capability for USB3, SATA, SAS, MIPI M-Phy by analyzing coded, packetized

data and filters filler symbols;

•Presets for filler and align symbols for USB3, SATA, MIPI,

•Filtering of up to four user-definable filler symbols,

•Filtering of consecutive occurrences up to 12.5 Gb/s without dead time;

•Display of calculated bit error or symbol error ratio in real-time;

•Ability to enter and monitor sent and received patterns in 8B/10B coded or uncoded bit or symbol format;

•Handles running disparity automatically,

•Supports Block Masking in SER mode.

Sequences / Patterns

•A sequence now can consist of up to 120 blocks. It depends on the number and the kind of loops used.

•Updated USB3/SATA loopback sequence/patterns.

Notes:

•IVI-COM driver version 1.2.7.0 does not yet support all commands necessary to support the De-emphasis Signal

Converter N4916B.

•IVI-COM driver version 1.2.7.0 does not yet support SER functionality.

Known defects in version 6.50 and 6.60

S. No.

Parameter Description

1 SAD00397466

“Preset Instrument State” button does not reset the various Jitter Tolerance settings

Defects fixed in version 6.60

. No.

Parameter Description

1 SAD00412975

Programming Guide: SOURce8:CONFigure:DISTribution OFF does not work

2 SAD00412976 Programming Guide: SOURce8:CONFigure:DISTribution OFF Resolved

3 SAD00412977 Programming Guide: SOURce2:DIVider8

4 SAD00412756 N4916B remote control sometimes doesn't update post

Version 6.51:

•Optimize hardware driver for option D14

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Version 6.50:

•The N4903B supports the De-emphasis Signal Converter N4916B. Accurately characterize your multi-gigabit

serial interface with the 4-tap de-emphasis signal converter with optional clock multiplier. For more information

see START→N4900 Series Documents →N4916B ReadMe.

•Trigger pulses at AUX IN input are detected down to a pulse width of 5 ns typ. when used as sequence trigger

Defects fixed in version 6.50

•SAD00397013 eye-diagram measurement fails to autoscale correctly

•SAD00397463 eye-diagram measurement fails to autoscale correctly

•SAD00408298 Delay Control Input can't be enabled without option J10 installed

•SAD00395370 Support for PRBS2^9

Version 6.10:

•The GUI mainframe design has been changed to improve usability of the instrument.

oThe list bar on the left hand side of the GUI has been replaced by a menu, which is opened by pressing

the menu button in the upper left corner.

oThe complete Pattern Generator and Error Detector status information is displayed at the bottom of the

GUI.

•The Spread Spectrum Clocking has been enhanced:

oSSC and SJ can now be activated and used simultaneously

oIn addition to downspread, also up- and centerspread are available now

oNon-triangular SSC-profile has been added, which can be specified using a simple text-file

oThe SSC deviation reset value changed from BOTH to DATA.

•The Jitter Tolerance Measurement has been adapted to the new jitter capabilities

oThe Jitter Tolerance Measurements no longer automatically activates PJ-1 and SJ.

oThe user must setup all jitter parameters on the jitter setup page before starting the test

oThe Firmware performs a plausibility check on the jitter setup before starting the measurement

New key capabilities of J-BERT N4903B (initial release):

•Supports testing of forwarded clock devices:

oHalf-rate clock with variable duty-cycle

oJitter on clock and data

oDelay of jitter between clock and data

•PCIe 2.0 compliant jitter injection:

oLF-RJ and HF-RJ

oDual-tone PJ

oResidual SSC

oElectrical idle

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