GE B20 User Manual page 68

Regular checks
When you start monitoring, check that:
• The module is firmly in place.
• Accessories are intact and properly connected.
• The appropriate parameters display in the digit and waveform
fields.
ECG and impedance respiration
• After connecting the ECG cable, check that the message 'Leads
off' displays in waveform field .
NIBP
• After connecting NIBP cable, check that the message 'Adult/
Pediatric' or 'Neonatal' displays in NIBP digital field for several
seconds.
Pulse oximetry
• After connecting the SpO
light is lit in the sensor.
Temperature
• After connecting the Temperture cable and sensor, check that
the message 'Performing temp test' displays in Temperature
digital field for several seconds.
IBP
• After connecting the IBP cable and transducer, check that the
message 'InvBP's not zeroed' displays in message field.
Airway gas
• Check that the acquisition module is connected to the monitor.
• After installing the module, check that the message 'Calibrating
gas sensor' displays in gas waveform field for about 1 minute.
cable and sensor, check that the red
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Entropy
• Check that the acquisition module is connected to the monitor.
• After connecting the Entropy sensor cable to the module, check
that the message "No sensor" displays.
Functioning of the alarm
• Check that the red, yellow, and cyan alarm lights are lit and the
speaker sounds an audible tone when the monitor starts up.
If the monitor does not work as described, see "Troubleshooting".
Software safety checks
GE software design controls include the performance of a risk
analysis using methods consistent with ISO 14971 Medical devices -
Application of risk management to medical devices.
The monitor software employs watchdog timers, self-monitoring
activities (e.g., memory, communication, and sensor checks), and
power-on self-diagnostics (e.g., memory checksums).
Preventative maintenance
GE recommends performing preventative maintenance every year.
For more information, See the "Technical Reference Manual."