Figure 3-2: Self-Test Display; Figure 3-3: Adjusting High %Spo2 Alarm Limit - Nellcor NPB-190 Service Manual

3.3.2.2 Factory Power-On Defaults and Alarm Limit Ranges
a. All indicators light for a few seconds as illustrated in Figure 3-2.
illuminated
b. The software version is displayed and the AC Power/Battery Charging
indicators remain on.
c. When a sensor is connected a zero is displayed in each window, a 1-
second Power-On Self-Test (POST) beep sounds and the Pulse Search
LED is illuminated.
If no sensor is connected a 1 second POST beep sounds, 3 dashes are
displayed in each window and the Pulse Search LED is off.
d. The NPB-190 begins normal operation if a sensor is connected.
Without a sensor the monitor will be in the idle mode (3 dashes in each
window).
Note: When observing or changing default limits, a 3-second timeout is in
effect, that is, if no action is taken within 3 seconds, the monitor
automatically returns to the normal mode.
1. Turn the monitor on by pressing the Power On/Standby button. Wait for
POST to be completed. Press and release the Upper Alarm Limit button.
Verify that the monitor emits a single beep and the %SpO
a high alarm limit of "100" for about 3 seconds. Verify that three dashes are
displayed at the top of the pulse rate display window.
Note: The location of the three dashes indicates the type of alarm limit that is
being adjusted. Three dashes in the top of the display window indicate a
high alarm limit and three dashes in the bottom of the display window
indicate a low alarm limit.

Figure 3-3: Adjusting High %SpO2 Alarm Limit

Normal monitoring is resumed after 3 seconds.
Section 3: Performance Verification
LEDs 888 displayed
10 segments
illuminated

Figure 3-2: Self-Test Display

LED
illuminated
NPB190
LED
illuminated
display indicates
2
3-3