:DISK:JDATabase:FFORmat

Command Syntax

:DISK:JDATabase:FFORmat {TEXT | INTernal}

Query Syntax

:DISK:JDATabase:FFORmat?

Description

Sets the format for saving jitter database files. Use the :DISK:JDATabase:SAVE command to actually save the database to the file. Only files saved using the internal format (.jdx) can be imported into Jitter Mode's jitter data memory for offline use.

INTernal

Internal-format database files (.jdx) are XML files comprised of an ASCII XML elements and binary waveform data, as shown in the following example file.

TEXT

Selects a text database file format with comma-separated values (.csv). In this format, the data is listed as ASCII text rather than binary, as shown in the following example file.

Example Internal Format File (.jdx)

<?xml version="1.0" encoding="utf-8"?>
<DcaFile>
  <Header>
    <FileType>JitterDataInternal</FileType>
    <Revision>1</Revision>
    <Instrument>N1010A</Instrument>
    <SwVersion>A.01.60</SwVersion>
    <SerialNumber>sn XXXXX</SerialNumber>
    <Date>09/08/2011 08:33:33</Date>
  </Header>
  <JitterSignalProcessing>Off</JitterSignalProcessing>
  <Pattern>
    <SignalType>Data</SignalType>
    <PatternLength>127</PatternLength>
    <NumBitsNeeded>0</NumBitsNeeded>
    <VOne>0.2543953683035714</VOne>
    <VZero>-0.25439122924804691</VZero>
    <BitPeriod>1.0046939300411523E-10</BitPeriod>
    <CenterOfFirstBit>1.1124999999999999E-10</CenterOfFirstBit>
    <AmplitudeMeasurementTime>1.1124999999999999E-10</AmplitudeMeasurementTime>
    <LongestCID>0</LongestCID>
    <TotalTriggerDivideRatio>1</TotalTriggerDivideRatio>
    <ExternalTriggerDivideRatio>1</ExternalTriggerDivideRatio>
    <Status />
    <BitPattern Lengths="127">binary data</BitPattern>
  </Pattern>
…………
</DcaFile>

Example TEXT Format File (.csv)

File Format, JitterDataCsv
Format Version, 1
Instrument, N1010A
SwVersion, A.01.60
SerialNumber, sn XXXXX
Date, 09/08/2011 08:13:57

Source, Channel1A
Module ID, 
Module Serial Number, 
Sampler Bandwidth, 10.0 GHz
Bit Rate, 9953280000(b/s)
Trigger Divide Ratio, 1:1
Pattern Length, 127
Edge Type, Both Edges
Jitter Measurement Units, Second
Signal Type, Data
Amplitude Measurement Units, Volt

Measurement Results, 
Measurement, Value, Uncertainty
TJ (1.0E-12),1.417837E-11,4.959452E-15
DJ (dual dirac),2.343289E-13,4.710793E-15
RJ (rms),1.015594E-12,1.428947E-16
Pj (dual dirac),0,8.831634E-16
DDJ (p-p),8.036748E-14,4.557992E-15
DCD,2.825419E-15,8.061495E-16
PJ (rms),0,1.428947E-16
ISI-J (p-p),8.036748E-14,4.557992E-15

RJ PJ Histogram, 
Edge Type,Both Edges
Total Samples,50724864
Edge Deviation,Number Hits
-5.482468E-12, 3
-5.366739E-12, 7
-5.251010E-12, 7
-5.135281E-12, 5
…………