Electronics International MVP-50T - Manual (Page 76)

B. Monitoring a Signal that is Switched from an Open to Ground:
EDC
Temp or Resistive Fuel
Level Channel.
Bus
Load
VI-221
VI-221
Device, Switch or
Relay
If a Load does not exist,
an additional VI-221
must be placed in the
circuit as shown. This
provides a pull up for
the switch.
Light, Horn, etc.
Page 2 of 3
2.0 Set Up the MVP to Display an Annunciator:
1. Navigate to the “1. EDC Input To Function Mapping” screen. Select the Temperature (or Resistive
Fuel Level) Channel which corresponds to the channel on the EDC that was connected to the Annunciator.
2. Select a Function for the Annunciator. Some Functions have special processes and should not be used as
an Annunciator. Use one of the follow Function names: Air Brake, Alpha, Alt Fail, Bag Door, Beta, Cabn
Door, Canopy, Custm1, Custm2, Custm3, Custm4, Cust1F, Cust2F, Deice, Door Seal, Doors, Fuel Pump,
Hyd Pump, Land Lts, Nav Lts, Ox Emerg, Pitot Ht, Prop, Rot Beacn, Step, Strob Lts or WS Deice. Do not
worry about matching the name of the Function to the Annunciator at this stage, the name can be changed
later.
3. Set the Probe field to “VI-221-TMP” for a Temp Channel or “VI-221-FL” for a F. Level Channel.
4. Cycle the Function from on to off and check the Reading field for a change in value. The value should go
from high to a low (or low to a high) reading when cycled.
5. Navigate to the “4. Redlines, Limits and Color Setup” screen. In the “Function” field select the
Annunciator. Use the “Displayed Name” field to change the name of the Annunciator. Set the Range
Markings as follows:
For a High Reading when the Annunciator is on:
Set “White” From “0.0” To “3.0”
Set “Green” From “3.0” To “100.0”
For a Low Reading when the Annunciator is on:
Set “White” From “3.0” To “100.0”
Set “Green” From “0.0” To “3.0”
Note: Green was used in the example above for an “on” condition. Your can use Red, Yellow, Blue, Orange,
or Pink. “White” must be used for an “off” condition, which will be displayed as “Black” on the MVP.