Search found 70 matches

by F.Krewett
Fri Apr 26, 2019 10:19 am
Forum: Problems
Topic: Dial LDT Editor IES to LDT Conversion Problem
Replies: 2
Views: 354

Re: Dial LDT Editor IES to LDT Conversion Problem

Hi clesser, According to the conversation factor of a LDT files does an IES file have a value for the "multiplier". Please read following description from the IESNA specification. This field shall contain a number indicating the multiplying factor that shall be applied to all candela values in the f...
by F.Krewett
Mon Mar 11, 2019 8:38 am
Forum: Using DIALux evo
Topic: Lichtstrom ändern iesna
Replies: 2
Views: 419

Re: Lichtstrom ändern iesna

Hi MJ78, vielen Dank für die Fragen! 1.) Ist es legitim, den "originalen" vom Werk gesetzten Lichtstrom innerhalb der Datei bei Bedarf zu senken oder gar zu erhöhen? Es ist nicht verboten den Lichtstrom einer Photometrie zu verändern. Allerdings sollte der Hersteller, bzw. das Labor, in dem die Leuc...
by F.Krewett
Mon Jul 30, 2018 3:58 pm
Forum: Using DIALux evo
Topic: Dialux Evo to Revit
Replies: 1
Views: 898

Re: Dialux Evo to Revit

Dear Znall,

Relux is using a closed 3D model format. There is no direct interface to import the models from DIALux into Relux or the other way around.


Best regards
Fabian
by F.Krewett
Mon Jul 30, 2018 3:52 pm
Forum: Using DIALux evo
Topic: Documentation-Error "Failed to allocate"
Replies: 3
Views: 14916

Re: Documentation-Error "Failed to allocate"

Dear Marian, We suppose that the project is not created in the origin of the DIALux coordinate system (0,0,0). If the project is far away form the origin there may be issues to create the documentation for "Views" or other performance issues. To solve the behavior please move the floor element and a...
by F.Krewett
Tue Jul 17, 2018 9:03 am
Forum: Problems
Topic: Different results in IES and LDT files of the same light source
Replies: 5
Views: 3138

Re: Different results in IES and LDT files of the same light source

Dear Orkan, As explained above is the height of the luminaire housing not included in the IES file format. The manufacturer themself cannot enter the height in the IES format too. All information about the housing cannot be displayed. The IES file just describes the light emitting surface. This is a...
by F.Krewett
Tue Jul 10, 2018 12:10 pm
Forum: Problems
Topic: Different results in IES and LDT files of the same light source
Replies: 5
Views: 3138

Re: Different results in IES and LDT files of the same light source

Dear Okan, This is a typical question caused by missing information of LDT or IES files. Please find below the explaination for the different calculation results. IES files contains no information about the luminiare housing or the position of the light center in the housing. To support those files ...
by F.Krewett
Fri May 18, 2018 7:28 am
Forum: Using DIALux evo
Topic: ldt editor
Replies: 1
Views: 1133

Re: ldt editor

Hi Steve, There is no manual for the LDT Editor. In general the tool is easy to use and self-explaining. Do you have any specific question? Regarding the explanation of the EULUMDAT format we would like to refer to the specification which can be e.g. find in our knowlegdebase http://evo.support-en.d...
by F.Krewett
Tue Apr 10, 2018 11:44 am
Forum: Using DIALux evo
Topic: Ligt passing through oblect
Replies: 4
Views: 2157

Re: Ligt passing through oblect

Dear Alan, From a technical perspective it is sometimes difficult to divide the walls in parts. If the upper part above the track is not calculated as an own part the result can be seen in your screenshot with the upper illumination. The correct way to construct this project is to draw a ceiling. Ce...
by F.Krewett
Mon Mar 26, 2018 9:38 am
Forum: Using DIALux evo
Topic: asymmetric distribution
Replies: 8
Views: 3669

Re: asymmetric distribution

Dear rahzan, Please excuse the late reply. L&B keeps us busy. In our project you have used the correct illumination M-class. For this category is the luminance for the differenet calculation points for an observer in a distance of 60m calculated. Therefore the expected result is not symmetrical. If ...
by F.Krewett
Wed Mar 14, 2018 5:26 pm
Forum: Using DIALux evo
Topic: asymmetric distribution
Replies: 8
Views: 3669

Re: asymmetric distribution

Dear rahzan, Worldwide there are different regulations how to measure photometry files. Here in Europe it is common to orientate the C0 plane in direction to the street while in US the orientation C0 parallel to the street is more common. In the polar diagram C0-C180 is the red colored curve. In DIA...