Topic

dB-axis

Ce sujet contient 3 réponses, 2 participants et a été mis à jour pour la dernière fois par tu@gl-group.com, le il y a 20 années et 4 mois.

Voir les messages de 4 - 1 à 4 (sur un total de 4)

Auteur

Messages
14.01.2005 à 22:31 #34134

tu@gl-group.com
Participant

Which is the easiest way to get a dB-Y-axis (for example 20*log(y/yref)??

I found no option in the properties for axes to switch from absolut-values to dB-values.

If there is no, a proposal for next updates could be the following:

A new item in properties for y-Axis with option “dB” . The user have to input a reference-value for the specified datas and the factor to multiplicate with (“20” e.g.)………

14.01.2005 à 23:40 #34132

Bernhard Kantz
Participant

You can scale your data in an easy way. Create a formula named “_Scaled” with the following content:

Arguments data
Dim yref

yref = 1
20*log10(data/yref)

You can now scale your data sets by selecting them in the FlexPro Explorer and simply dragging and dropping them onto the name of the above formula. FlexPro then creates a new object for each dataset which returns the scaled data and whose unit is set to “mA”.

support@weisang.com

15.01.2005 à 00:47 #34133

tu@gl-group.com
Participant

Thanks….

That’s the way i do it till now.

It should be only a property of axes (like “log, ln, lin, octave” etc.) . No calculation of data in
additional rows of the sheet….

15.01.2005 à 00:56 #34131

tu@gl-group.com
Participant

Which is the easiest way to get a dB-Y-axis (for example 20*log(y/yref)??

I found no option in the properties for axes to switch from absolut-values to dB-values.

If there is no, a proposal for next updates could be the following:

A new item in properties for y-Axis with option “dB” . The user have to input a reference-value for the specified datas and the factor to multiplicate with (“20” e.g.)………
Auteur

Messages

Voir les messages de 4 - 1 à 4 (sur un total de 4)

Vous devez être connecté pour répondre à ce sujet.