ES601Plus OPERATING MANUAL
ISOLATED
SIGNAL I/O, cont'd:
Therefore, the "ISOLATED SIGNAL I/O" button enables a
supplementary test condition for touch current, patient and auxiliary
leakage measurements under IEC60601 and AAMI safety standards.
The expected result is these leakages should not be affected by
applying mains voltage to the data connection, or by earthing the data
connection, since the input/output signals are supposedly isolated
from the DUT enclosure and patient leads.
WARNING:
If ISOLATED SIGNAL I/O is set to "TEST!", a warning message is displayed: (!) CHECK
D.U.T. SPECS.
When enabling this test, users must be sure the data interfaces being tested are fu lly is o late d .
Otherwise, s e ve re d am ag e to th e DUT could result when AUX1 is activated during the test. If
in doubt, contact the DUT manufacturer or supplier for guidance.
Datrend Systems Inc. will not be responsible for damage resulting from incorrect application of
this test.
UNGROUNDED
METAL:
Options are "DO NOT TEST" (default) or "TEST". This parameter
determines whether the AUX2 output of ES601Plus will be connected
to protective earth of the AC supply.
AUX2 is intended to connect to flo ating e xp o se d metal on the DUT.
This test is required under the IEC60601 standard if the DUT has
metal parts that are electrically isolated or "floating", but are exposed
so a user or patient can touch them. If enabled, the test does NOT
measure the leakage current from the floating metal parts. In this test,
the metal is connected to protective earth and then the leakage current
of the patient-applied parts is measured.
Therefore, this button enables a supplementary test condition for
patient leakage tests per IEC60601. The expected result is the patient
leakage is unaffected by connecting such metal parts to earth, since the
metal is supposed to be electrically isolated.
Manual Testing/Chapter 5 # Page 66
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