Novametrix Medical Systems OXYPLETH 520A, Service Manual

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Analog Output Setup
5-Jun-01 Model 520A Service Manual
71
PRELIMINARY
MONITOR OPTIONS 2
appears on the display. Select
REC
for
CALIBRATE
RECORDER
menu.
2. The Recorder Outputs menu will be displayed.
• RUN
- return to Monitoring Mode
• ZERO
- set analog outputs to 0 volts
(0% = 0 volts, 0 bpm = 0 volts, pleth = 0 volts)
• HALF
- set analog output voltages to half scale
(50% = 0.50 volts, 125 bpm = 0.50 volts, pleth = 0.50 volts)
• FULL
- set analog output voltages to full scale
(100% = 1.00 volt, 250 bpm =1.00 volts, pleth =1.00 volts)
• PREV
- returns to
MONITOR OPTIONS 2
menu.
3. Press the
ZERO
key and adjust the analog baselines on the recorder. Press the
FULL
key and adjust the recorder full scale deflection. Press the
HALF
key and
check that the recorder registers at half scale.
Note: Earlier versions of the Analog Output Module have a 2.5 volt maximum
scale for the Plethysmogram and Pulse Rate (1.25 volt half scale).
Figure 19. Analog Output Setup
Signal
Analog
Connector
Pin #
Min-Max Voltages
(Referenced to Pins 2 + 3)
ZERO HALF FULL
Pulse Rate 1 0.000-0.012 0.477-0.520 0.955-1.030
Saturation 4 + 5 0.000-0.012 0.477-0.520 0.955-1.030
Plethysmogram 8 + 9 0.000-0.012 0.477-0.520 0.955-1.030
Table 4. Analog Output Module Voltage Tolerances
Press and hold for 5 seconds while in normal running mode
CALIBRATE RECORDER
ZERO
HALF FULL PREV
RUN