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Diagnostic Mode
5-8 Configuring the Power-up Defaults Menu
System A/D
Values
The System A/D screen displays the current value of each analog-to-digital (A/D) channel in
volts. Some of the channels are for AC-coupled signals (such as ECG input), so the numbers
on the screen are constantly changing when an input signal is present. These AC-coupled
values are shown to give an indication as to whether basic functionality of the channel is
present, but no significance can be derived from the values of the numbers displayed.
The Primary and Secondary Status messages from the SpO
2
module are displayed and
updated at the rate of about once per second. Presence of the correct SpO
2
message indicates
that, at a basic level, communication between the SpO
2
module and the main monitor
processor is working correctly. None of the displayed values can be changed or reset in this
screen. When in the System A/D screen, the Return option is always highlighted. Press the
wheel to return to the Diagnostic Menu. Rotating the wheel while in the System A/D screen
has no effect. The A/D channel designators are shown in the following table.
DIAGNOSTIC MENU
SYSTEM A/D VALUES
1. 12.
2. 13.
3. 14.
4. 15.
5. 16.
6. 17.
7. 18.
8. 19.
9. 20.
10. 21.
11.
Return
SpO2 S1 SpO2 Alive SpO2 S2 No Sensor