User`s guide

M3000A/M3046A/M3015A/M3016A Service Guide
Introduction to the Instrument 1-41
M3015A Measurement Server Extension Theory of Operation
The application-specific software for the second pressure/temp and CO
2
runs on the main
CPU in the Measurement Server (see “Measurement Server Theory of Operation” on page
1-21). The pressure/temperature and the CO
2
frontends communicate the pre-processed
physiological data via the Frontend Link Protocol to the application-specific software on the
main CPU of the Measurement Server.
The Temp/Press features available on the Extension are identical to those available on the
Server. The Temp/Press selections specific to the Extension are T2 and P2.
If you press the Zero key on the Server, all invasive pressure measurements in use are
zeroed. To set independent zero and labels for P2, however, go into the Setup window on the
Monitor.
If two temperatures are measured (one with the Server and one with the Extension), the
differential temperature (Delta Temp) is calculated by the Server.
For more information on the Temperature and Invasive Blood Pressure (Temp/Press)
measurement see the section earlier in this chapter.
Functional Description of the M3015A Measurement Server
Extension Hardware
The Extension receives information signals (such as Temp/Press) and a sidestream CO
2
sample from the patient then transmits the data through the Server to the Monitor via the
Server-to-Monitor link bar. See the Functional Description of the Measurement Server
Hardware earlier in this chapter for a description of the normal processing of measurement
data.
The sidestream CO
2
Extension is always used with a Server. To function correctly, both the
Server and the Extension must have compatible software revisions.
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Pairing the Server with the Extension allows for the following:
• Measurement of both temperature and invasive blood pressure for the same patient.
• Two temperature measurements for the same patient including a Delta Temp calculation
feature.
• Two invasive blood pressure measurements for the same patient.
For more information on the Temperature and Invasive Blood Pressure (Temp/Press)
measurement see the section earlier in this chapter.