Nellcor N-20 - Guide to Operation; Basic Operation

GUIDE TO OPERATION
Basic Operation
Turning Beeper Off (or On)
Battery
Operation
Description of Modes
BASIC OPERATION
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2.
Plug an appropriate NELLCOR sensor into the sensor port,
close the sensor lock over the plug, and apply the sensor to
the patient as described in its directions for use. If
necessary, use an EC-4 sensor extension cable.
WARNING: During the self-test (immediately after
power-up), confirm that all display segments light.
Turn the N-20/N-20P on:
• For spot-check mode, press the measure button once.
• For extended mode, hold the measure button down for 4
to 5 seconds.
(See "Description of Modes" later in this section for more
information.)
After power-up, the N-20/N-20P automatically tests its
circuitry and lights the entire display. If a problem is
detected, an error message is displayed (see Section
Troubleshooting"). If ambient light is low, the display
backlight turns on automatically.
During operation, the constant-pitch beeper sounds once
for each pulse, and the pulse amplitude indicator reflects
pulse strength at the sensor site. If no sensor is detected,
dashes are displayed.
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