Seagate ST32000645SS, 100516232 Test for Prominent Discrete Tones PDTs, Electromagnetic immunity

3.11Test 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.

3.12Electromagnetic 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	Reference standard
Electrostatic		Contact, HCP, VCP: ± 4 kV; Air: ± 8 kV	B	EN 61000-4-2: 95
discharge
Radiated RF		80 to 1000 MHz, 3 V/m,	A	EN 61000-4-3: 96
immunity		80% AM with 1 kHz sine		ENV 50204: 95
		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	EN 61000-4-4: 95
transient
Surge immunity		± 1 kV differential, ± 2 kV common, AC mains	B	EN 61000-4-5: 95
Conducted RF		150 kHz to 80 MHz, 3 Vrms, 80% AM with 1 kHz sine	A	EN 61000-4-6: 97
immunity
Voltage dips,		0% open, 5 seconds	C	EN 61000-4-11: 94
interrupts		0% short, 5 seconds	C
		40%, 0.10 seconds	C
		70%, 0.01 seconds	B

20 Constellation ES Serial ATA Product Manual, Rev. G