Advantech user manual INTRAC-305 Installation

6

INTRAC-305		INSTALLATION
Beacon Signal Connector	When an IBR-L beacon receiver is fitted there will be a
	“N-type” RF connector on the INTRAC rear panel. It is to this
	that the beacon signal is connected.
Note	18Vdc may be connected to the inner connector of the N-type
	in order to power the Block Down Converter.
	The 18V can be removed from the “N” connector by power
	connector J41 on the INTRAC Interface board.
Signal Strength Input	Where no IBR-L is fitted the INTRAC-305 requires a dc
	voltage generated by an external receiver. This voltage must
	be directly proportional to the received signal strength in dB.
	The signal strength input is via a BNC connector on the
	INTRAC rear panel.
Resolvers (pointing angles)	Setting the INTRAC-305 for the antenna pointing angles is
	achieved by use of the “Fine Tune” sense and offsets facility.
	Fine Tune Sense is used to set the INTRAC for the rotational
	direction of the resolvers. Fine Tune Offset is used to adjust
	the resolver returned angle to the actual antenna pointing
	angle. i.e., to compensate for any inaccuracy in the resolver
	mounting.
	Ensure that the “Fine Tune Sense” is set to true (see page
	35) for both Az, El & Pol. Also clear the “Fine Tune Offsets”
	(see page 36).
	With the resolvers connected to the INTRAC-305 note down
	the displayed Az, El and Pol antenna pointing angles
	Put the INTRAC into Manual Mode.
Fine Tune Sense	Drive the antenna slowly in Az using the “drive right” key, note
	whether the displayed angle increases or decreases. Return
	the antenna to the original pointing angle. Drive the antenna
	slowly in El using the “drive up” key, note whether the
	displayed angle increases or decreases. Drive the antenna
	polarisation slowly clockwise using the “drive right” key, note
	whether the displayed angle increases or decreases.
	For the axes where the displayed angle increased leave the
	Fine Tune Sense set to true. For the axes where the
	displayed angle decreased set the sense to false.
Fine Tune Offsets	Use the Fine Tune Offset facility to set the pointing angles to
	those noted from the APC300 before it was disconnected.
Southern Hemisphere	Set-up in the Southern Hemisphere is the same as for the
	Northern Hemisphere except that the antenna rotation will be
	+/- 90° of North instead of +/- 90° of South.
© 2011 Advantech Wireless	INTRAC-305 MANUAL - Issue 3.2	Page 73