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    <TimeStamp>2023-10-05T17:11:37Z</TimeStamp>
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    <User>Tracy Smail</User>
    <Comment>ISO file matched accordingly.</Comment>
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    <User>Dan McFadden</User>
    <Comment>3.3/4.0/4.1@47633</Comment>
    <StatusString>Resolved</StatusString>
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    <User>Dan McFadden</User>
    <Comment>this issue parallels another issue that was fixed some time ago:
 
http://manuscript.dts.local/f/cases/19038/
 
in both these cases an offset was being double counted.  In 19038 this was solved by removing the offset from the DataZeroLevelEU that is subtracted when outputting EU.
 
The issue in 19038 and 29678 is the line
 
channelFileWriter.WriteLine((channel.Samples.Data[i] - channel.DataZeroOffsetEu).ToString("F6", System.Globalization.CultureInfo.InvariantCulture.NumberFormat));
 
the channel sample data in an export is already in EU and so I'm not sure there's ever a point in subtracting a DataZeroOffsetEU from eu.  I think this line could be simplified by just removing the - DataZeroLevelOffsetEU, however I chose to follow what 19038 did and zero out this offset from the DataZeroLevelOffsetEU itself. 
 
I don't think this case actually effects the resolution for 19038, but I re-activated that one for re-testing since it is in the exact same area.
 
To test, get the zip from manuscript 29678 above.  Export CSV and ISO both unfiltered.  The output should match for the first channel, it should be for the first 5 samples:
 
4.409630
 2.281482
 -1.043750
 0.020324
 2.414491
 
pre-patch it will not match, post patch it should</Comment>
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    <Comment>attaching notes from investigation</Comment>
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    <User>Dan McFadden</User>
    <Comment>相川 隆 - Aikawa, TakashiYesterday 11:18(assign)
 
 
 
 
 
 
 
 
Hello, Chris
  
 Could you inspect and fix the bug?
  
 Bug report
 DataPRO 3.1.619
 Area: Export - csv, ISO
 Issue: difference between csv exported data and ISO exported data.
   
 
ISO exported data is shifted 19 EU (ch0), 23EU(ch1) from csv exported data.
 
csv exported data looks same as "view data".
 
Average over time (-0.025 sec - 0.000 sec) is used however view data plot and csv data looks zeroed probably by diagnostics level.
 
ISO data looks zeroed by average over time.
 
  
 This is headrest test.
 Inoue san never seen this issue with other sled tests.
 He think difference is that sled test uses trigger input from testing machine headrest test uses level trigger.
 He just noted this issue with this test and did not check other headreat test.
  
  
 ISO exported data is shifted 19 EU (ch0), 23EU(ch1) from csv exported data.
  
  
 This is filtered data.     Average
 -0.025 - 0.000 -19.0189997 -22.95897 -0.019 0.04103       Time csv
 Chan 0:JC1360035 csv
 Chan 1:JK2160019 ISO Chan 0 ISO Chan 1 csv - ISO Channel 0 csv - ISO
 Channel 1   -0.498 1.95116023 3.55363139 20.95116 26.55363 -19 -23   -0.4979 1.66368673 3.04052972 20.66369 26.04053 -19 -23   -0.4978 1.0273232 2.1136106 20.02732 25.11361 -19 -23   -0.4977 0.42707984 1.82953062 19.42708 24.82953 -19 -23   -0.4976 0.05141264 2.57614367 19.05141 25.57614 -19 -23   -0.4975 0.05331608 3.98274117 19.05332 26.98274 -19 -23   -0.4974 0.73440577 5.33076937 19.73441 28.33077 -19 -23   -0.4973 2.18654473 6.00190169 21.18655 29.0019 -19 -23   -0.4972 4.00078881 6.02089568 23.00079 29.0209 -19 -23   -0.4971 5.66538628 5.88109487 24.66539 28.8811 -19 -23   -0.497 6.98491459 5.70455263 25.98492 28.70455 -19 -23     
 Thank you,
 Takashi
 
 
 
 
 
 
 
 
 
 
 
 
 
 
HRZ22037-unfiltered csv vs iso
 
XLSX
 
 
 
 
 
 
 
 
 
 
 
HRZ22037_filtered csv vs iso
 
XLSX
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
相川 隆 - Aikawa, TakashiYesterday 04:14(assign)
 
 
 
 
 
 
 
 
井上 様
  
 ご報告ありがとうございます。ご迷惑をおかけし申し訳ないことと存じます。
 データを確認させていただきます。
  
 -----
 DTS, Inc. 日本支店
 相川 隆
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
Maugan RobertYesterday 02:55(assign)
 
 
 
 
 
 
 
 
Assigned to Takashi.
 相川 隆 - Aikawa, Takashi - Feel free to copy other support/software people if needed.
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
井上 明 - Inoue, AkiraYesterday 02:43
 
 
 
 
 
 
 
 
 
DTS
 
相川様
 
 
 
いつもお世話になっております。
 
トヨタ紡織(株)　井上です。
 
 
 
一部の試験において、Excelでの計算結果とTrack Report計算結果でピーク値で約20m/s^2程度違いがあり
 
元データを確認するとISOデータが約2g程度オフセットして書き出している事が分かりました。
 
現象が見られたのはヘッドレスト衝撃試験になります。
 
DataPRO Viewerのグラフと比較してもISOデータがオフセットしている事が分かりました。
 
スレッド試験においては特にこのような現象は見られておりません。
 
両試験の違いは、
 
・ヘッドレスト衝撃はレベルトリガーで起動させている　スレッドは試験機トリガー信号
 
・ヘッドレスト衝撃は水平打ち出し式のため、ヘッドフォーム打ち出し時にマイナス加速度が発生している
 
　(ソフトウェアゼロ算出は -25ms - 0msのアベレージオーバータイムにしております)スレッドは -20ms - 0ms
 
 
 
ヘッドレスト試験全てのデータは見れておりません。
 
取り急ぎ、キャプチャーを送付させて頂きます。
 
現象をご確認頂けませんでしょうか。
 
お手数をお掛け致しますが、宜しくお願い致します。
 
ご参考までに発生したヘッドレスト試験ファイルも併せて添付させて頂きます。</Comment>
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