Electronics International MVP-50T - Manual (Page 23)

2.8 Install the Interface Circuit for Flap and Trim Pots:
Elevator, Aileron and Rudder trim (as well as Flap position) can be monitored and displayed on the MVP. In
most cases the position of these surfaces are monitored using a Ray Allen 5K ohm pot. The following circuit
may be used to interface with a 1K to 100K pot.
17
EDC
Temp or Resistive Fuel
Level Channel.
VI-221
Bus
Ray Allen
Pot
4.99K, 1%, 1/4W Resistor
1K to
100K
2.9 Install the Interface Circuit for the Gear Position, Unsafe Indicator and Gear
Warning:
The Gear Position and Unsafe Indicator shown on the MVP System Screen is intended as a backup to the
aircraft’s existing system. The Gear Warning operates off the Gear Position, Unsafe Indicator, Airspeed and
Manifold Pressure. The Gear Warning provides a voice warning to reduce the possibility of gear up landings.
Unsafe Indicator: Operates from an unsafe signal from the aircraft. Displays as either Red or Off on the
MVP. The EDC interface circuit is shown below. The Unsafe Indicator is REQUIRED with any landing
gear options listed below and requires one EDC input.
Landing Gear Position: There are three options for interfacing the EDC to the aircraft’s gear system.
Option 1: Connect the EDC to the aircraft’s Right, Left and Nose Gear green down lights. The
state of each gear will be displayed independently on the MVP. Select Gear Left, RT and Nose
for the probes in Configuration Screen #1. This option requires three EDC inputs. The EDC
interface circuit is shown below.
Option 2: Connect the EDC to the aircraft’s Nose Gear green down light. The state of all three
gears will be displayed on the MVP based on the Nose Gear’s state. Select “Gear All” for the
probe in Configuration Screen #1. This option requires one EDC input. The EDC interface
circuit is shown below.
Option 3: Use this option to display only the Left and Right Main Gears (no Nose Gear) from a
single input. Connect the Left or Right Main Gear to the EDC as shown below. Select “Gear
Main” for the probe in Configuration Screen #1. This option requires one EDC input. The
EDC interface circuit is shown below.
Note: When setting colors, use Green for down and White for up. Red will cause an error.