Photometric File Type B

This dialog provides more information about the selected Type B photometric file shown in AGi32's Luminaire Definition dialog. Luminaire photographs are optional and are most often associated with Instabase files.

Description and Classification

The General section contains two small tabs with the following metrics: Description and Classification. The Description tab reiterates the descriptive Keyword information contained in the selected photometric file. Use the scroll bars to see the entire IES description if it extends beyond the window extents. The Classification tab display various metrics calculated in AGi32. Type "B" reports, generally used to describe floodlights, will generate Flood classifications and Luminaire Efficacy Ratio (LER). LCS metrics (BUG ratings) do not apply to Type B photometry.

• Luminaire Efficacy Rating (LER): This classification is a measure of a luminaire's energy efficiency. LER is a measure of the luminaire's rated lumen output divided by its input power.
• NEMA Type: The National Electrical Manufacturers Association (NEMA) has developed a set of seven floodlight categories based on beam size in the horizontal and vertical directions. A luminaire's NEMA type is determined by the location of the 10% maximum candela value in the axial angles of the Type B photometric web. For example: If 10% of the maximum candela value falls between 46 and 70 degrees, the designation is NEMA type 4 in that direction (horizontal or vertical). Click on the Concepts tab at the top of this topic for more information on NEMA classifications.

Candela Display

Type B photometric files will display luminous intensity (candela) along the horizontal and vertical axis only and can be shown in Polar or Cartesian display.

1. Select whether to display the vertical and horizontal axial candela curves. You may change the default colors if desired, by clicking in the appropriate color cell.
2. By default, the calculated candela curves are displayed using a Polar graph. To display them using a Cartesian graph, click on the Cartesian radio button.
3. The dialog will remember your selections and apply to all future Type B photometric files by clicking on the Ok button. To retain the previous settings, click on the Cancel button. Click on the Reset Defaults button to reset all settings to factory defaults.

 

Printing

You may print the selected candela curves in a pre-formatted fashion by clicking on the Print button. The information is sent automatically to your default system printer using the default page settings. You may change the default printer and/or media size by clicking on the Print Setup button.

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