10-02-2012 01:50 AM
I have used oscilloscope (Tektronix MSO4104) connected to a PC that used SignalExpress free version. Signals are saved under TDMS file format. There is also one TXT file which is introducing the specification of saved data. These specifications are as follows:
Log name: 04/16/2011 02:00:23 PM
User: Administrator
File name: C:\Documents and Settings\Administrator\My Documents\SignalExpress Data\04162011_020023_PM\MSO4104(CH1).tdms
File size: 57.1482MB
Log duration (s): 1.19809k
Log dt (s): 400n
Log iteration length (s): 400m
Number of sample in log: 7000000
Log datatype: Time-WDT-Real
Unit: V
Log start time: 4/16/2011 14:03:41.932
Log version: SignalExpress 2.5
Log signal names:
04/16/2011 02:00:23 PM - MSO4104(CH1)
In LOG START TIME line we can see (4/16/2011 14:03:41.932) means millisecond time stamping.
In my project I need to have us (microsecond) time stamping means (14:03:41.932XXX)
Can I reach to this precise time stamping if I buy full version of signal express?
Thank you in advance for your cooperation.
10-02-2012 07:36 AM
Timestamps in TDMS are saved in a binary format which has 5×10-20s resolution, far more than most hardware can handle. This is included in all versions of SignalExpress. It is the conversion to text which is the issue. Most mainstream analysis packages can read TDMS directly (e.g. Excel). Look for support on either the NI or your manufacturer's website. Is there a specific reason you are converting to a text file?
10-02-2012 12:34 PM
05-20-2019 07:29 AM
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