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8 SPECIFICATIONS
8.1 Readout
8.2 Controls
8.3 Operating Modes
8.4 Printer Output
8.5 N-20/N-20P Performance
8.6 Sensor Types
8.7 Electrical Specifications
8.8 Environmental Specifications
8.9 Physical Specifications
8.10 Quality Information
8.1
Readout
Display shows SpO
included are a Pulse Search and Low Battery indicator, and an electroluminescent backlight.
8.2
Controls
8.2.1
N-20
The Measure button switches the instrument on and off, and initiates the measurement cycle.
The Battery-Check button is used to check battery condition and switches beeper on and off.
8.2.2
N-20P
The Measure button switches the instrument on, initiates the measurement cycle, and switches
instrument off.
The Battery-Check button is used to check battery condition and switches beeper on and off.
ON button switches the printer on and off.
D/D sets display date and time.
ADV advances paper and increments time and date.
8.3
Operating Modes
8.3.1
Spot Check Mode
Pressing the instrument Measure button once for less than 2 seconds starts the spot check mode. Spot
check mode computes SpO
end of the measurement interval. If the printer is activated, the printout shows the displayed SpO
pulse rate.
8.3.2
Extended Mode
Extended mode is started by holding down the instrument Measure button for approximately 3
seconds, plus any time required to complete the power-on self-test. The N-20/N-20P displays updated
SpO 2 and pulse rate with every pulse (after five valid pulses have been detected). The N-20/N-20P
remains active until 3 minutes after the sensor is removed, or until the instrument is turned off.
(saturation of arterial hemoglobin oxygen), pulse rate, and pulse amplitude; also
2
averaged over five valid pulses and displays SpO
2
and pulse rate at the
2
and
2
8-1
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