Electronics International MVP-50P - Manual (Page 102)

A5.0 Appendix
EDC-33P-8
for
7, 8, 9-Cylinder Engines and High RPM Engines
The EDC-33P-4/6 is EI's standard unit designed to work with 4 and 6-cylinder aircraft engines. The EDC-33P-8
unit is designed to work with 7, 8, and 9-cylinder aircraft engines. Also, the EDC-33P-8 can interface with 4, 6
and 8-cylinder high RPM engines (>4500 RPM). The RPM inputs are the only difference between the EDC units.
The Top and Middle “EDC Wiring Work Sheets” are the same for the EDC-33P-4/6 and -8 units. Only the
Bottom Connector is different for the -8 unit. The “EDC Wiring Work Sheet” for the EDC-33P-8 Bottom
Connector is attached. The specifications for the EDC-33P-8 RPM inputs are listed below. For any MVP probe
not listed, you can manually set up the MVP calibration.
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Engine
MVP
Probe
Pin 28
Bottom Connector Max RPM
4-Cyl RPM 4H/8H Open 9,600
6-Cyl Open 6,400
7-Cyl RPM 7Cyl Open 5,200
8-Cyl RPM 8Cyl Open 4,800
9-Cyl RPM 9Cyl Open 4,270
6-Cyl RPM 6H Short to Gnd 12,600
8-Cyl RPM 4H/8H Short to Gnd 9,450
9-Cyl Short to Gnd 8,400
10-Cyl Short to Gnd 7,600
12-Cyl Short to Gnd 6,300