5

INTRAC-305

TECHNICAL DESCRIPTION

strength is recorded and at the end of this phase the antenna is driven to that position and the INTRAC enters Standby.

At this point the peak may be confirmed manually and/or learning mode entered by selecting Auto New Model.

Remote

Remote Mode transfers control of the INTRAC to a remote

 

terminal.

 

It is selected with Menu Key 6 (Select Remote) from the Home

 

menu. Once in Remote Mode only four functions are available

 

from the INTRAC front panel. The emergency stop switch will

 

inhibit the antenna drive as normal, the alarms can be

 

displayed, Standby Mode can be entered and control can be

 

returned to the front panel again with Menu Key 6 (Select

 

Local).

USING IESS-412 OR NORAD DATA

The INTRAC-305 can make use of Intelsat IESS-412 11- parameter or NORAD ephemeris information in two ways.

 

1.

The information can be used by the INTRAC to

 

 

generate an INTRAC model of the satellites orbit.

 

 

This model is then be used by the INTRAC as it would

 

 

use a model it had learnt itself. This means that there

 

 

is not the need for the 24hr learning period. The model

 

 

is then updated as any INTRAC model would be.

 

2.

 

The INTRAC can

 

 

be commanded to Program Track using positions

 

 

calculated from the ephemeris data.

 

The IESS-412 and NORAD data sets can be entered either

 

manually from the INTRAC front panel or from a PC. A stand

 

alone program is available for loading the data file from a PC.

 

This program can be used alone or in conjunction with the

 

Remote Control Terminal RCM-4.

 

A description of this program is given the appendices.

The IESS-412 data

The IESS-412 data set comprises 21 fields of data :-

 

IESS Epoch Year

range: 80 to 99 (20th century)

 

 

 

00 to 79 (21st century)

 

IESS Epoch Month

range: 1 to 12

 

IESS Epoch Day

range: 1 to 31

 

IESS Epoch Hour

range: 0 to 32

 

IESS Epoch Minute

range: 0 to 59

 

IESS Epoch Second

range: 0 to 59

© 2011 Advantech Wireless

INTRAC-305 MANUAL - Issue 3.2

Page 59

Page 71
Image 71
Advantech INTRAC-305 user manual Using IESS-412 or Norad Data