Absolute Start Time of Waveform Signals

[Mark1978]

Hello,

I have two waveform signals and want to calculate the difference (in seconds and milliseconds) of their absolute start times.

Waveform x Start times:

• First Signal: 01.01.2000 00:00:00.000100000
• Second Signal: 01.01.2000 00:00:00.000000000

The difference shoud be 0.0001 seconds.

To calculate this value:

I made a textbox in a report and wrote the following:

Difference: @@Str(Data.GetChannel("[2]/Schall_1").Properties("wf_start_time").Value-Data.GetChannel("[2]/Schall_2").Properties("wf_start_time").Value, timeformat)@@

The problem is: The textbox shows 0.0000 as the result. Why?

Thank you in advance

[Walter_Rick · Accepted solution]

Hi Mark1978,

The problem is that VBS supports time up to seconds, DIAdem in normal format up to milliseconds and in extended format (USI Time) micro and nanosecond.

So you can access the individual time components:

dim oTV, oGroup

call Data.Root.Clear
set oGroup = Data.Root.ChannelGroups.Add("Date")

call oGroup.Properties.Add("Timetest", CreateTime(2022,3,9,10,11,12,123,456), DataTypeDate)

set oTV = Data.Root.ChannelGroups(1).Properties("Timetest").oValue

msgbox str(oTV.Day) & "." & str(oTV.Month) & "." & str(oTV.Year) & " " & str(oTV.Hour) & ":" & str(oTV.Minute) & ":" & str(oTV.Second) & "." & str(oTV.Millisecond) & str(oTV.Microsecond)

Greetings

Walter

[Mark1978]

Thank you, Walter.