Seagate ST251R Product Manual page 18

1.9.1 INPUT NOISE RIPPLE AND FREQUENCY
The maximum permitted noise ripple is 100 mV (peak-to-peak) mea-
sured at the host system power supply across an equivalent 8
n
re-
sistive load on the + 12 Volt line and an equivalent 3
n
load on the
+5 Volt line. The maximum permitted input noise frequency is 20 MHz.
1.9.2 UL/CSA CERTIFICATION
The ST251 is listed in accordance with UL 478 and CSA C22.2 (O-M 1982),
and meets all applicable sections of IEC 380 and VDE
0806/08.81,
as
tested by
TUV-Rheinland, North America.
1.10 FCC CERTIFICATION
WARNING
The ST251 is certified to comply with the limits for a Class B computing
device, pursuant to Subpart J of Part 15 of FCC rules. Only devices
certified to comply with the Class B limits may be attached to this
peripheral. Operation with non-certified devices is likely to result in
interference to radio and television reception.
Radio and Television Interference
This equipment generates and uses radio frequency energy and if not
installed and used in strict accordance with the manufacturer's instruc-
tions, may cause interference to radio and television reception.
1-10 ST2511251RI277R Product Manual, Rev.A