ASTi Telestra User's Guide download pdf (Page 105)

ASTi Telestra User Guide (Ver. 3, Rev. G.1)

DACS System Requirements

There are two steps involved in conﬁguring DACS systems to use the HF Server.

• Modify the Model Builder conﬁguration ﬁle (usually “default.cfg”) to include the state-

ments detailed below.

• Conﬁgure the radio modes within Model Builder for the radios that will use the HF Server.

It is important to note that, to the Model Builder software, the HF Server operates in the same

fashion as a terrain database server. In both applications, Model Builder queries an external server

for path loss information; Model Builder uses the same conﬁguration mechanism for both. Fur-

ther, the tools provided by Model Builder for debugging and viewing terrain server operation can

also be used for the HF Server.

Model Builder Application Conﬁguration File

By default*, this ﬁle is located at

C:\mbuilder\user\models\default.cfg

and will hereafter be referred to as “default.cfg” for clarity.

*Although users can force the Model Builder software to load different Model Builder Application

Conﬁguration Files (all of which end in the “.cfg” ﬁle extension), that procedure will not be cov-

ered here, and all of the changes presented here in reference to “default.cfg” also apply.

The commands required to enable a DACS to access the HF Server are listed below. Note that

Model Builder “default.cfg” commands and arguments are not case-sensitive. All of these com-

mands are required to enable HF Server use by DACS systems.

ethernet:local_ip = xxx.xxx.xxx.xxx

This statement sets the IP address of the DACS' Host ethernet card. If there is more than

one network card in the DACS, the HF Server should share the network with the DACS'

Host ethernet.

IMPORTANT: If you are using RMS to manage this DACS, the host IP address should be

set in the “conﬁg.sys” ﬁle, rather than “default.cfg”.

terrain = on

This command activates the terrain/HF option. This conﬁgures the DACS to use an exter-

nal terrain or HF server to compute path loss between in-tune radios in the Model Builder

environment.

terrain:broadcast_ip = xxx.xxx.xxx.xxx

This command sets the IP address of the HF Server (the Telestra system). Requests for

path loss factors will be sent to the IP address speciﬁed here. Remember, requests are sent

out (and responses are received) on the DACS' host interface.

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ASTi Telestra User's Guide Page 105