Electronics International MVP-50T - Manual (Page 52)

“Reference:” The Interim Value may be referenced to
another Function. The value of the Function selected in
this field will be added (+) or subtracted (-) from the
Interim Value. Differential measurements can be made by
subtracting one Function from another. Temperature
measurements based on thermocouple probes must be
temperature compensated by referencing the “T. COMP”
(temperature compensation) Function.
“Allow Negative Readings:” Negative readings should
not be allowed on functions such as RPM, M.P., most
pressures, fuel levels, etc. If negative readings are not
allowed, negative values will be displayed as zero.
“Filter:” The Interim Value may be filtered. A filter
increases the response time (shown in the “seconds =” field) and reduces jumping.
“Dejitter Level (FFT):” A unique dejitter algorithm may be applied to the Interim Value. A Dejitter
algorithm removes jumpy readings without increasing response time.
“Truncate (# digits):” The last one or two digits on the Interim Value may be truncated (displayed as zero).
“Decimal Places:” This field only allows you to place a decimal point in the display. It does not change the
calibration of the Interim Value.
“Snap to zero below:” If the Interim Value drops below the value set in this field, the Interim Value will be
set to zero.
“Proportional to the Bus:” If the probe assigned to the EDC Input (selected above) is powered by the
aircraft bus, the readings may change as the bus voltage changes. By selecting “Yes” in this field the MVP will
perform a ratio metric calculation with respect to the bus voltage. This will eliminate reading changes due to
bus voltage variations. Most E.I. probes and transducers are not powered by the bus but Trim, Flaps and
Annunciators should be powered by the bus.
“Reset values back to factory default?” Each Probe has a factory default setting for each of the
calibration parameters listed above. If any parameter has been changed from the factory default, the changed
parameter will be displayed in yellow. This field can be used to reset the calibration parameters back to the
factory defaults.
52