Welch Allyn 420 Series - LCD (Liquid Crystal Display)

Spot Vital Signs 23
LCD (Liquid Crystal Display)
The liquid crystal display may indicate any of the following: systolic blood pressure (kPa or
mmHg), diastolic blood pressure (kPa or mmHg), temperature (°F or °C), temperature method,
pulse rate, pulse signal level, SpO
2
, MAP, and battery charge level.
Description Function
G Systolic Display This LCD shows the systolic blood pressure. If MAP is
turned on, the screen toggles between the systolic value
and the word “MAP.”
H Diastolic Display This LCD shows the diastolic blood pressure. If MAP is
turned on, the screen toggles between the diastolic value
and MAP value.
ISpO
2
Display Shows the percent saturation of arterial hemoglobin (SpO
2
).
J Pulse Signal Bar Graph The bar graph gives a visual indication of the strength and
quality of the pulses detected by the SpO
2
sensor.
K Pulse Display Shows the pulse rate.
L Temperature Display and
Indicator
Shows the temperature in degrees, Fahrenheit or Celsius.
M Thermometer Probe
Setting Indicator
Shows a stick figure to indicate probe setting (oral, axillary
or rectal).
N Temperature Probe
Problem Indicator
Displays a broken probe icon to indicate a temperature
probe problem.
O Battery Charging Indicator Displays a plug icon when the device is powered through
the AC power transformer.
P Battery Level Indicator Continuously displays a battery icon with segments, to
show the battery power level. The segments indicate the
charge level of the battery. A fully charged battery has all
segments illuminated. As the battery level drops, segments
turn off. While the internal battery is charging, the icon
segments continuously sequence.
SpO
2
%
SYS
(mmHg)
kPa
/ min
M
P
DIA
(mmHg)
kPa
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