Section 3: Performance Verification
3-8
Table 3-1: Dynamic Operating Range
SRC-2 Settings
NPB-190 Indications
RATE
LIGHT
MODULATION
SpO2
Pulse Rate
38
HIGH2
LOW
79 - 83*
37 - 39*
112
HIGH1
HIGH
79 - 83*
110 - 114
201
LOW
LOW
79 - 83*
198 - 204*
201
LOW
HIGH
79 - 83*
198 - 204*
3.3.3.1.5
Nurse Call
Note:
The Nurse Call tests must be performed with the instrument operating
on AC power.
1.
Connect the negative lead of a voltmeter to pin 10 and positive to pin 11 of
the serial port on the back of the instrument (Figure A-1 in appendix).
Ensure that the audible alarm is not silenced or turned off.
2.
Set the SRC-2 to create an alarm condition. Verify an output voltage at pins
10 and 11 b5 to +12 VDC.
3.
Press the Alarm Silence button. With no active audible alarm, the output
voltage at pins 10 and 11 must be between -5 to -12 VDC.
4.
Turn the instrument off. Disconnect the voltmeter and the SRC-2.
3.3.3.1.6
Operation on Battery Power
1.
Turn the instrument on using AC Power.
2.
Disconnect the instrument from AC and verify that the AC Power Indicator
turns off.
3.
Verify that the instrument continues monitoring normally and that the Low
Battery Indicator is not lit.
Note:
If the Low Batter Indicator is illuminated, perform the procedure
outlined in step 3.3.1.
4.
Connect the instrument to AC and verify that the AC Power Indicator turns
on and that the instrument is monitoring normally.
3.3.3.2
General Operation
The following tests are an overall performance check of the system:
•
LED Excitation Test
•
Monitor Operation with a Live Subject
3.3.3.2.1
LED Excitation Test
This procedure uses normal system components to test circuit operation. A
Nellcor Oxisensor II
â
oxygen transducer, model D-25, is used to examine LED
intensity control. The red LED is used to verify intensity modulation caused by
the LED intensity control circuit.
