GE Datex-Ohmeda S/5 Series Technical Reference Manual page 149

Service Menu
Service Data
Sensor ADULT/PEDIATRIC according to the selected measurement mode (sensor).
Insp/Exp Flow Gains shown apply to the selected sensor.
Aw Press Zero and Flow Zero are the result of zeroing in the user service menu. They can be adjusted in the
factory calibration menu, but not permanently stored.
Aw Press Gain is directly the value used in sw. It can be adjusted, but not permanently stored.
Exp Flow and Insp Flow Gains are scaled as (User gain)/(Factory gain). Exp and Insp Flow Gains can be
adjusted also in the user service menu.
Common Offset is the compensation factor for pressure difference reading of the difference sensor when
applying an equal pressure on both sides of the sensor.
Valves can be changed between MEASUREMENT and ZEROING.
Zeroing automatic zeroing either ENABLED or DISABLED (only factory service menu).
Aw Pressure shows the real time value of airway pressure.
Condition shows in which reference conditions the results are. With calibration pump or spirometry tester, the
> 1.0%), the results are according to the Flow & Vol
results are always in ATP. If breathing is detected (EtCO
2
Setup selection.
Flow shows the flow measurement value.
TVol Exp, TVol Insp, MVol Exp and MVol Insp are shown to ease calibration. The numbers are the same as on
the main display. The former pump calibration procedure has been dropped out. We claim that calibration is
not needed in routine clinical use, so a separate Flow calibration menu is not needed. Calibration can be done
with the pump or spirometry tester. The results must be taken from the screen and gains adjusted accordingly.
VCO and VO Gain show a value near 1000, the correct gains have been measured in the factory. Not used in
2 2
MRI Monitor.
Y deadspace is the geometric volume in ml between the Y-piece and the D-lite. Default is 5 ml for a standard Y-
piece (as delivered with Siemens 900C ventilators). Used for VCO and VO delay time corrections.
2 2
Set N injection to 1 during laboratory tests with a Spirometry tester and injection of N gas (for scientific
2 2
validations use only). At power on of the module, the value is always zero.
Ambient pressure value measured by the module.
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Document no. M1144955-001