VAL Avionics NAV 2000 Installation Guide download pdf (Page 161)

SV-EMS-220/221 Installation and Configuration

SkyView System Installation Guide - Revision R 7-53

o Because each individual CS-01 varies somewhat, configuring the CS-01 typically

requires an amps "offset" value to be utilized. SkyView provides 17 different offsets

via different choices in the SENSOR column. These contain offsets that range from "-

8" (offset of -8A) through "+8" (offset of +8A). If you wish the CS-01 value on your

SkyView EMS to display most accurately at zero current, choose the offset that

displays "0A" when zero current is flowing through system. This can be done by

turning off all avionics power and operating SkyView on its backup battery. If you

wish the current to display most accurately at normal current draw, choose

whichever of the 17 offset values provides the most accurate current reading. (This

will require some experimentation.)

 Set the name column to “AMPS” (default) or create a custom name.

Carburetor Temperature Sensor

The carburetor temperature sensor may be connected to any general purpose input pin on the

SV-EMS-220/221’s D37, however, we recommend that it be connected to pin 23 on this

connector.

Install the carburetor temperature sensor in the venturi area at the point where ice first begins

to form. This is located after the main nozzle, before the throttle valve. You must remove the

plug in the carburetor housing below the throttle valve. On four-cylinder engines which use the

Marvel Schebler MA-3 carburetors, this plug is located on the forward side. On six-cylinder

engines using the MA-4 carburetor, the plug is located on the rear. If your carburetor is not

drilled and tapped for the plug, you must remove the carburetor from the engine and drill out

the lead plug in the appropriate spot. Tap the hole with a ¼-28 tap. Remove all chips and burrs

before reinstalling.

Route either of the two wires to an electrical ground on the SV-EMS-22X D37 connector. Route

the other wire to the general purpose input of your choice.

Note: If you are converting a Dynon D10/D100 product installation to a SkyView installation,

you should remove any resistor that is connected to the existing carburetor temperature

sensor. It is not needed when used with SkyView.

Rotax CHT Sensors

The Rotax CHT sensors may be connected to any general purpose input pin on the SV-EMS-

220/221’s D37, however, we recommend that they be connected to pins 4 and 22 for left and

right signals, respectively.

Crimp bare ¼” female Faston terminals (6.3x0.8 according to DIN 46247) onto the ends of two

general purpose input wires on the EMS 37-pin Main Sensor Harness. Locate the left-side CHT

sensor screwed into the bottom side cylinder head 2; slide the Faston connected to one of the

general purpose inputs onto it. Locate the left-side CHT sensor screwed into the bottom side of

cylinder head 3; slide the Faston connected to the other general purpose input onto it.

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VAL Avionics NAV 2000 Installation Guide Page 161