Installation; Connection Diagram - Vega ASV-1 Operating Manual

Altimeter, airspeed (asi) and vertical speed indicator (vsi)

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Vega ASV-1 Operating Manual

Page 19

10 Installation

Connect a pitot tube to the "pressure port" and if required connect the static port.

Connect the static port to a suitable static air pressure line. If you have a slow aircraft or an aircraft where the internal

cabin pressure does not change during flight and is equivalent to the outside air pressure you may find that it is not re -

quired to connect a static port. Most small aircraft such as ultralights or microlights do not require a connection to a static

port. In these cases, simply leave the static port open. Ensure however that the static port does not receive pressurized

air due to the forward movement of the aircraft. Be especially critical of your pod or panel if you do not use a static port.

Any build up of a pressure differential due to ram air or suction can lead to large errors of the indicated airspeed and alti -

tude. Static ports are usually mounted at a strategic position on the rear side of the aircraft fuselage for faster, pressurized

aircraft.

The ASV-1 pressure ports take 4mm ID tubing. Use hose clamps to fasten the hose onto the ASV-1 pitot and static ports.

The ASV-1 allows you to calibrate the airspeed reading. This is done under the "AIRSPEED SETUP" menu item. The

main reason for this is to be able to remove errors introduced due to the airflow around your aircraft which may have an

effect on your pitot tube pressure.

The use of an external 1A fuse is recommended. Connect the supply terminals to your aircrafts power supply. The ASV-1

can be used on both 12V and 24V without the use of any pre-regulators. Ensure that the supply voltage will not drop be -

low 8V during operation as this may result in incorrect readings.

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