Installing an Additional Display
90
Installin
the Instrument
Installing an Additional Display
An additional display must be installed by an Philips Medical Systems service engineer or
authorized Service Representative. By the addition of a display, the M3/M4 Monitor becomes
a system and must be safety-tested as such after installation. The required tests are described
in “Testing the Instrument” on page 137.
Displays
WARNING In situations where the additional display is situated outside of the medically-used room
(see IEC 60601-1-1), the additional protective earth connection is a requirement, or
alternatively, electrical isolation must be provided by using a separation device
depending on the value of the measured enclosure leakage current.
Any display which meets the specifications for the VGA interface may be used with your
monitor. When connected to the patient monitor, these displays (along with any other Class I
non-medical equipment) must comply with IEC 60950 and with IEC 60601-1-1 when
connected to the M3/M4 Monitor.
If the resulting enclosure leakage current of the display exceeds the value laid down by IEC
60601-1/60601-1-1, then certain action needs to be taken to ensure that the system as a whole
meets safety standards that are equivalent to those contained in IEC 60601-1/60601-1-1.
What action to take depends on the measured enclosure leakage current of the display, and
where the display is located (is it in the patient vicinity, outside the patient vicinity but still in
the medically-used room, or outside of the medically-used room?).
The following two tables show what action to take.
Resulting Earth Leakage Current of the Non-
Medical Device
Normal
Condition
Single Fault
Condition
Result 1
≤ 0.1mA ≤ 0.5mA
Result 2
≤ 0.1mA ≥ 0.5mA
Result 3
≥ 0.1mA ≥ 0.5mA
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