IBM 4230 User Guide - Page 293

Appendix D. Declaration of IBM Product Noise Emission Values The following tables show the noise emission values for the 4230 Printer. Table D-1. 4230 All Models Impulsive Noise Prominent Discrete Tones No No Table D-2. Sound Emission Levels - 4230 Standard Covers Sound Emission Category Operating Idling LWAd 7 bels 4.5 bels m 53 dB 30 dB Table D-3. Sound Emission Levels - 4230 ASF Covers Sound Emission Category Operating Idling LWAd 7 bels 4.5 bels m 55 dB 30 dB Notes: 1. LWAd is the declared sound power emission level for a production series of machines. 2. m is the mean value of the space-averaged sound pressure emission levels at the one-meter positions for a production series of machines. All measurements are made in accordance with the American National Standards Institute (ANSI) S12.10 and reported in conformance with the International Organization for Standardization (ISO) 9296. © Copyright IBM Corp. 1991, 1994 D-1