Seagate ST33000651SS Constellation ES (.1) SATA Product Manual - Page 28

2.11 Test for Prominent Discrete Tones (PDTs) Seagate follows the ECMA-74 standards for measurement and identification of PDTs. An exception to this process is the use of the absolute threshold of hearing. Seagate uses this threshold curve (originated in ISO 389-7) to discern tone audibility and to compensate for the inaudible components of sound prior to computation of tone ratios according to Annex D of the ECMA-74 standards. 2.12 Electromagnetic immunity When properly installed in a representative host system, the drive operates without errors or degradation in performance when subjected to the radio frequency (RF) environments defined in the following table: Table 6: Radio frequency environments Test Description Performance level Electrostatic Contact, HCP, VCP: ± 4 kV; Air: ± 8 kV B discharge Radiated RF immunity 80 to 1000 MHz, 3 V/m, A 80% AM with 1 kHz sine 900 MHz, 3 V/m, 50% pulse modulation @ 200 Hz Electrical fast ± 1 kV on AC mains, ± 0.5 kV on external I/O B transient Surge immunity ± 1 kV differential, ± 2 kV common, AC mains B Conducted RF 150 kHz to 80 MHz, 3 Vrms, 80% AM with 1 kHz sine A immunity Voltage dips, 0% open, 5 seconds C interrupts 0% short, 5 seconds C 40%, 0.10 seconds C 70%, 0.01 seconds B Reference standard EN 61000-4-2: 95 EN 61000-4-3: 96 ENV 50204: 95 EN 61000-4-4: 95 EN 61000-4-5: 95 EN 61000-4-6: 97 EN 61000-4-11: 94 22 Constellation ES Serial ATA Product Manual, Rev. D