NEV MetaTags lists incorrect DataDuration and DataDurationSec value #46
Description
I noticed that NEV files recorded from the Gemini system (using Central 7.6.0) do not show the correct duration in the MetaTags. This does not affect NS6 files.
Here is an example NEV.MetaTags structure for a 60 second recording, where DataDurationSec was reported as 6.3050e+04:
>> NEV.MetaTags
ans =
struct with fields:
Subject: 'CRSXX'
Experimenter: 'active_minute none'
DateTime: '29-May-2023 15:34:01'
SampleRes: 30000
Comment: ' '
FileTypeID: 'BREVENTS'
Flags: '0000000000000001'
openNEVver: []
DateTimeRaw: [2023 5 1 29 15 34 1 299]
FileSpec: '3.0'
PacketBytes: 108
HeaderOffset: 24912
DataDuration: 1.8915e+09
DataDurationSec: 6.3050e+04
PacketCount: 449548
TimeRes: 1.0000e+09
Application: 'File Dialog v7.6.0'
Filename: '20230529-113401-001'
FilePath: 'P:\data_raw\human\crs_array\CRSXX\BlackrockData\Baseline256\ActiveMinute\20230529-113401\20230529-113401-001.nev'
FileExt: '.nev'
ChannelID: [1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 … ]
The associated NS6 file correctly displays both DataDurationSec and DataPointsSec as 60.
This issue also affects data collected with the previous firmware version, before switching to PTP time (below is also a 60 second file with 30k time res)
>> NEV.MetaTags
ans =
struct with fields:
Subject: [1×0 char]
Experimenter: ' '
DateTime: '28-Apr-2023 17:01:44'
SampleRes: 30000
Comment: ' '
FileTypeID: 'BREVENTS'
Flags: '0000000000000001'
openNEVver: []
DateTimeRaw: [2023 4 5 28 17 1 44 768]
FileSpec: '3.0'
PacketBytes: 108
HeaderOffset: 24912
DataDuration: 33155881
DataDurationSec: 1.1052e+03
PacketCount: 697806
TimeRes: 30000
Application: 'File Dialog v7.5.2'
Filename: '20230428-130144-001'
FilePath: 'P:\data_raw\human\crs_array\CRSXX\BlackrockData\Baseline256\ActiveMinute\20230428-130144\20230428-130144-001.nev'
FileExt: '.nev'
ChannelID: [1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 … ]