Chapter 1: Functional Description
System Functions
Service Manual 1-23
1.3.14 Scale (Bedded Models Only)
The scale communicates with the main processor via RS-485. (Refer to Figure 1-16.) The connector for the
scale cable is in the probe panel housing. The scale is powered by 12V DC supplied by the control board.
The power circuit includes over-current protection.
1.3.15 SpO
2
The Pulse Oximetry (SpO
2
) option utilizes an OEM module commonly used in other monitoring equipment.
For units that have the SpO
2
option, the SpO
2
patient probe connects to the SpO
2
module which is located
in the probe panel housing. (Refer to Figure 1-17.) The probe panel housing contains the OEM module and
an SpO
2
interface board. Oximetry parameters and alarms are passed to the main application processor
via serial communication. The OEM module output is communicated to the user visually or audibly as
required.
FIGURE 1-16. Scale Interface
FIGURE 1-17. Pulse Oximetry (SpO
2
)
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