Category
Recently Viewed Products
-
CIE 112
$89.04$53.42 -
AGA A25023
$172.00$103.20 -
CIE x048-PO11
$31.80$19.08 -
IES LM-11
$50.00$30.00 -
BS 10
$312.42$187.45
IES LM-72 – Approved Method: Directional Positioning of Photometric Data
This document is intended to provide a clearly defined set of terms to be used to designate the angular positioning of photometric data. The terms are intended to be used by both providers and users of lighting software so as to unambiguously and consistently specify how photometric data is to be “rotated” before it is used. Two similar but fundamentally irreconcilable types of positioning have existed for years. The “Clockwise from North” (“CN”) system starts by rotating luminaire photometric data clockwise from north. The “Counter-Clockwise from East” (“CCE”) system starts by rotating luminaire photometric data counter-clockwise from east. A third positioning method, called “aiming luminaire at a point,” has also existed for years and is also discussed in this document.
Product Details
- Published:
- 04/21/2020
- ISBN(s):
- 9780879952150
- ANSI:
- ANSI Approved
- Number of Pages:
- 23
- File Size:
- 1 file , 2.2 MB
- Note:
- This product is unavailable in Ukraine, Russia, Belarus
Related products
-
IES RP-6
$120.00$72.00Add to cartRecommended Practice: Lighting Sports and Recreational Areas, Includes Errata 1 (2021)
Published by Publication Date Number of Pages IES 02/07/2020 102 -
IES RP-44
$120.00$72.00Add to cartRecommended Practice: Ultraviolet Germicidal Irradiation (UVGI)
Published by Publication Date Number of Pages IES 07/22/2021 55 -
IES TM-37
$50.00$30.00Add to cartTechnical Memorandum: Description, Measurement, and Estimation of Sky Glow
Published by Publication Date Number of Pages IES 11/01/2021 55 -
IES RP-7
$120.00$72.00Add to cartRecommended Practice: Lighting Industrial Facilities, Includes Errata 1 (2021)
Published by Publication Date Number of Pages IES 07/01/2021 119