10
Using the 8500 and 8500M Pulse Oximeters
Startup Self-Test
When the device is turned on, the device will cycle through a startup/initialization sequence
before displaying valid data. During startup, always check for any missing indicators or LED
display segments. If any indicator is not functioning, do not use the device. Contact Nonin
Technical Service for repair or replacement.
During its normal startup sequence, the device will cycle as follows:
• “
888 888
” appears briefly in the SpO
2
and Pulse Rate displays.
• the Pulse Quality display turns red for 1 second, then green for 1 second, then shuts off.
• the clock time currently set in the memory (in hours and minutes,
04 41
for example)
appears briefly in the displays.
• the software revision numbers (display in the following order): Main revision “
r
” + 3 numbers
(8500 & 8500M); Memory revision “
n
” “
n
” (for m) + 3 numbers for Model 8500M; the 8500 will
display “
n
” “
n
” and “no” for Model 8500.
• (
-
) a dash appears for Model 8500 in the displays until a valid pulse signal is detected.
Apply the pulse oximeter sensor to the patient’s finger; ensure the system is obtaining an
adequate pulse signal by verifying:
• the pulse oximeter sensor is properly positioned
• the Pulse Quality indicator is blinking green
• the Pulse Rate and SpO
2
readings are displayed
• the Pulse Quality indicator is blinking in time with the pulse rate for at least 10 seconds
If the Pulse Quality indicator is blinking red or amber or is blinking inconsistently, reposition
the sensor or replace the sensor.
The SpO
2
and Pulse Rate will display a single dash until a pulse signal is detected.