VIASYS Vmax Encore, Техническое справочное руководство

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Chapter 3 Maintenance and Troubleshooting
3–26
L2707
Technical Reference Manual
Vmax Encore
Dir
Displays a voltage representing a pressure signal. The sign (positive/negative) of the
zeroed pressure signal represents the direction of the flow
E1
Voltage representing the flow sensor. E1 of 3.2ish represents a valid calibration when
no flow is present (Spectra or Encore)
Pm Mouth Pressure transducer
Pb Box Pressure transducer
Temp Temperature. 2.266 represents 22.66 degrees Celsius
Pbar Barometric Pressure. 7.516 represents 751.6 mmHg
Ecold Created during development of Spectra— not currently used for troubleshooting
Ehot Created during development of Spectra—not currently used for troubleshooting
Eref Known voltage that is used to scale the A/D converter output.
Ezero Known zero volt signal used to zero the A/D converter
5/Rs
Displays the status of the F1 remote start button. 5 volts represents button not pushed
or activated. 0 volts represents activation
+15
Used to detect Vmax. If more than 14 volts isn’t present, then problem with connection
of Vmax
Vol Used to analyze 922/1022 volume
O2 Oxygen sensor output
CO2 Carbon Dioxide sensor output
CH4 Methane sensor output
C2H2 Acetylene sensor output
CO Carbon Monoxide sensor output
ECG1-2 Used to read the raw voltages from the SMC 3 lead
POD 1-8 Used to read the raw voltages from the analog pod box per channels 1-8
F1 Shunt
When checkmark present the pressure transducers reference the ambient conditions.
When unchecked, both sides of the pressure transducers reference the mass flow
sensors (used to zero the transducer)
F2 BXB/Extrn
When checked gas to the gas sensors comes from the Si/So line. When unchecked,
gas comes from the BxB line.
F3 TTL A Outputs a TTL logic level of on or off ( 1 or 0)
F4 TTL B Outputs a TTL logic level of on or off ( 1 or 0)
F5 TTL C Outputs a TTL logic level of on or off ( 1 or 0)