Section 3: Performance Verification; Performance Verification - Nellcor NPB-40 Service Manual

SECTION 3: PERFORMANCE VERIFICATION

3.1

PERFORMANCE VERIFICATION

3.1 Performance Verification
The performance of the NPB-40 can be verified using the following procedure.
Before performing this procedure, the NPB-40 must have fresh batteries
installed. If any of the required observations cannot be obtained, do not
return the NPB-40 to service before referring to Section 4, Troubleshooting.
You will need an SRC-2 pulse oximeter tester to perform this procedure. If
the performance of the printing function will be verified, you will need an
HP82240B printer.
The NPB-40 is to be turned off and any sensors disconnected before
performing this procedure.
1. Press the On/Off key on the front panel keypad.
2. The NPB-40 will perform a self-test. Verify that all display segments
are lit during the self-test as shown in Figure 3-1. Also verify that a low
pitched audio tone is heard at the end of the self test. Also verify that
you then hear a high, a low, and a high pitch error tone indicating that
a sensor is not connected. Verify that dashes are shown on the display
and the SENSOR DISCONNECT indicator is flashing.
Figure 3-1: NPB-40 Self-Test Front Panel Display
3. Wait for 20 to 40 seconds. Verify that two triple beeps are heard. Verify
that the NPB-40 then shuts itself off.
4. Connect an SRC-2 pulse oximeter tester to the NPB-40 sensor
connector.
Note: If the SRC-2 is connected directly to the NPB-40 sensor
connector, its controls will be facing the opposite direction of
the NPB-40 controls. Connecting the SRC-2 through a sensor
extension cable, such as the Nellcor Puritan Bennett model EC-
4 or EC-8, will make it easier to perform this procedure.
3-1