Compliance West TEquipment Defib-5, Instruction Manual

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5
Section 3
IEC 60601-2-27 Option
This section describes how to set up and use the
Defib-5 with the IEC 60601-2-27 option.. This
option allows the Defib-5 to act as the circuits
described in IEC-60601, Figures 101, 104 and
105. Please refer to Figures 3, 4 and 5 for a
schematic of the circuits in IEC 60601, and
Figure 1-1 for the appropriate front panel
connections needed to conduct these tests with
the Defib-5.
The connection information for the Defib-5 is
shown in blue text on the following Figures.
Notes on testing with the IEC
60601-2-27 option
Testing with the IEC 60601-2-17 option requires
minor additions to the circuitry in the Defib-5,
and these changes are accomplished using
jumpers on the front panel.
The changes to the circuit are as follows, along
with the appropriate actions to perform on the
front panel:
1.
50 OHM jack: This is the standard output
jack for IEC 60601-1 Table 50, and it is also
used for the pulse output for testing in IEC
60601-2-27. This output provides the 50
ohm output impedance required by IEC
60601-2-27.
2.
Impedance Jumper: For testing to IEC
60601, a 500uH inductance is required. To
provide this inductance, the front panel
jumper must be used to SHORT the two
impedance jacks.
3.
EC-13 SENSE jack: This jack allows
verification of the 100 ohm resistor used in
the Defib-5. The 100 ohm resistance value
is measured between the EC-13 SENSE jack
and the RETURN jack on the front panel of
the Defib-5.
4.
MEAS. POINT: This is the point which is
connected to the voltage divider network
within the Defib-5 to determine PASS/FAIL
results of the test. See Fig. 3-1 for
schematic details.
5.
Y1 – Y2: These differential outputs are to
be connected to two different channels of an
oscilloscope, then the outputs are subtracted.
This resulting waveform is used to judge
acceptability of the EUT.