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
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