5

INTRAC-305

TECHNICAL DESCRIPTION

 

illuminated. The alarm may be viewed using the Show Alarms

 

menu.

 

The Soft Limits are set in the Configuration - Soft Limits menu.

Note

In either Manual (P) or Manual (A) mode the antenna may be

 

driven through the soft limits with no warning.

AXES POSITION

Resolver units are fitted to the driven axes of the antenna.

 

These units supply positional information to the INTRAC’s

 

resolver interface circuits.

 

Depending on the system “Extended Azimuth” or “EG-01”

 

and/or “Geared Pol” offsets may need to be set.

 

Fine Tune offsets may be set to calibrate the resolver outputs

 

to the actual antenna pointing angle.

TRACKING SIGNAL

An L-band Integrated Beacon Receiver (IBR-L) is an option

 

with the INTRAC-305. When fitted this receiver is tuned to an

 

L-band frequency by the INTRAC based on the “Beacon

 

Frequency” set for the satellite. If the beacon frequency of the

 

satellite to be tracked is not in the L-band a Block Down

 

Converter will be required to convert the signal to L-band.

 

The calculation of the correct L-band frequency for the IBR-L is

 

performed automatically by the INTRAC for BDCs with

 

standard local Oscillator frequencies so that the beacon

 

frequency may be entered at the actual receive frequency.

Note

If an IBR-L is not fitted the INTRAC requires a dc voltage level

 

which is proportional to the received signal strength from the

 

satellite.

© 2011 Advantech Wireless

INTRAC-305 MANUAL - Issue 3.2

Page 63

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Image 75
Advantech INTRAC-305 user manual Axes Position, Tracking Signal