Mortara Surveyor Central 3.x, Руководство по обслуживанию

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Surveyor Central
1-6

The quality of the signal produced by the system may be adversely affected by the use of other
medical equipment connected to the patient including, but not limited to, defibrillators and ultrasound
machines.

If the device or one of its subsystems become inoperable during monitoring, a medium or low priority
type alarm sounds and a message is displayed on the screen. In case of hardware or software
failure that causes the sound generator or display subsystem to fail, the hardware watchdog unit
generates a continuous beep. Periodic checks of the monitoring screen are recommended to ensure
proper functioning.

The monitor supplied with the Surveyor Central has a separate power switch and power on indicator.
If no image appears on the screen, check the monitor power indicator (normally illuminated in green).
Alarm sounds are not affected by the status of the monitor.

The on/off switch of the Surveyor Central is deactivated and can only be used for emergency power
down by depressing it for a period greater than 4 seconds. Normal shutdown of the Surveyor Central
should be done by using the password-protected configuration window.

Do not use excessive force on any of the connection cables and handle all accessories with care.

Various alarm conditions require operator set limits that vary per patient. Surveyor Central supports
the selection of appropriate alarm profiles when a patient is admitted. The operator should check
these settings after each patient admission to ensure whether the chosen alarm limits are appropriate
for the individual patient. Inappropriate alarm limits render the alarm system useless.

Portable and mobile RF communications equipment can affect medical electrical equipment or
systems as well as the Surveyor Central and its accessories.

Surveyor Central alarms can only be silenced and not reset. This means that visual representation of
an alarm condition remains present after an operator silenced action until the alarm condition
disappears (unless obscured by another, higher priority, alarm). The auditory alarm signal does not
re-activate after a silence action if the alarm condition remains the same. As soon as the alarm
condition of a silenced alarm goes away, the alarm can be reactivated.

The Surveyor Central alarm system can be globally disabled or paused for a period of time by a
single patient only. The selection between disabling and pausing, as well as the pause duration, can
be set in the password-protected system configuration page. A clear visual indication of this
condition is present in the patient window, and a reminder signal sounds every three minutes. Any
technical alarms will be visually presented on the screen, regardless of the alarm disabled state. In
this configuration the technical alarms will not be audible.

The intended use of Surveyor Central Repeater is to repeat waveforms, parameters and system
status of selected patients monitored by Surveyor Central, in order to enhance workflow for medical
personnel. Surveyor Central Repeater does not produce audible alarm signals and may not be used
to substitute any alarm functions of Surveyor Central.
The following warnings concern telemetry monitoring:

The X12+, T12, and T12S transmitter applies a small DC current for active noise suppression in
normal use, and an 8 or 16 Hz waveform during impedance check mode. Currents applied are below
the thresho
lds specified in ANSI/AAMI ES1 “Safe current limits for electromedical apparatus.”

The minimum amplitude for detecting QRS complexes is user selectable between 300 and 500 µV. A
low value of this limit has the risk of detecting P waves as QRS complexes in the case of atrio-
ventricular block. However, a high value might lead to false cardiac arrest alarms if the QRS
amplitude is low in both detection leads. Therefore, the user is encouraged to select detection leads
with an amplitude of at least 1 mV and set the minimum QRS amplitude at 500 µV.