APx52x/58x B Series Audio Analyzers: Safety Information i
Safety
Safety Information
Do NOT service or repair this equipment unless properly
qualified. Servicing should be performed only by a quali-
fied technician or an authorized Audio Precision distributor.
Do NOT defeat the safety ground connection. This equip-
ment is designed to operate only with an approved three-
conductor power cord and safety grounding. Loss of the
protective grounding connection can result in electrical
shock hazard from the accessible conductive surfaces of this
equipment.
Do NOT exceed mains voltage ratings. This equipment is
designed to operate only from a 50–60 Hz ac mains power
source at 95–264 Vac.
For continued fire hazard protection, fuses should be
replaced ONLY with the exact value and type indicated on
the rear panel of the instrument and discussed on page 4 of
this manual.
The International Electrotechnical Commission
(IEC 1010-1) requires that measuring circuit terminals used
for voltage or current measurement be marked to indicate
their Measurement Category. The Measurement Category is
based on the amplitude of transient or impulse voltage that
can be expected from the AC power distribution network.
This product is classified as Measurement Category I,
abbreviated “CAT I” on the instrument front panel. This
product should not be used within Categories II, III, or IV.
The 2-channel input module measurement terminals are
rated for a maximum voltage of 230 Vpk to ground, and a
signal input of 160 Vrms unbalanced, 300 Vrms balanced;
the 8-channel input module measurement terminals are
rated for a maximum input of 160 Vpk to ground, and a sig-
nal input of 115 Vrms, balanced or unbalanced. These ter-
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