Philips M3921A, Руководство по обслуживанию

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Diagnostic Mode
44 Power-up Defaults Menu And Diagnostic Mode
An NiBP Test screen is provided to facilitate troubleshooting problems and
performing verification testing for the NiBP subsystem. Typically, when these tests
are performed, the pneumatic system is connected to an external pressure-reading
device and a closed reference volume. The NiBP Test screen provides a real-time
numeric display of the pressure in the pneumatic system, means for controlling the
pump and valves, and a display indicating whether the proportional and safety valves
are open or closed.
The NiBP Test screen elements are described below:
• Pressure Display: The real-time value of the system pneumatic
pressure is displayed in mmHg. The value is
updated at the rate of approximately two times per
second.
• Proportional Valve The display indicates whether the
Display: proportional valve is open or closed.
• Safety Valve Display: The display indicates whether the safety valve is
open or closed.
• Activate Pump: For as long as the NiBP Start/Stop button
is pressed, the pump runs. If system pressure
reaches the hardware over-pressure protection point
(280 to 330 mmHg), the safety valve opens and the
pump disables, until the pressure falls below the
safety threshold.
• Deflate: For as long as the
ALARM SILENCE
button
NiBP TEST
Pressure (mmHg) 179
Valve: OPEN
Press NiBP to activate pump;
release to stop pump.
Press Volume to open valve;
release to close valve.
Press Alarm Silence to open
proportional valve and deflate at
3 mmHg/s; release to close valve.
Press Contrast to perform offset
adjust.
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