User's Manual

Company Confidential 60 Raveon Technologies Corp.
12. SkyLine Compatibility
12.1. General
The M7 RF modem has built-in compatibility with a radio modem made by Sonik
Technologies, Vytek Wireless, and Cal Amp called the SkyLine. In most
applications, Raveon’s M7 modem can communicate with SkyLine modems,
provided the M7 is properly configured. There are two versions of the Skyline, a
wide-band version running at 9600 bps over the air, and a narrow-band version
running at 5142bps over the air.
12.2. Configuring M7 to Communicate with a SkyLine
To configure the M7 modem to talk to an old SkyLine modem, the user must
configure the M7 with these commands:
ATR2 7
This command tells the M7 modem to operate with an over-the-air
baud rate of 5124 bits per second. This is the baud-rate of all narrow-
band (12.5Khz spaced) SkyLine radio modems. Wide-band SkyLine
radios operated at 9600 baud over the air. The command to set the
M7 to 9600 baud over the air is ATR2 5.
ATR5 8 This command tells the M7 modem to send 8 bytes of pre-amble
before every transmission.
MYID 1234 The MYID of the M7 modem is set with the ATMY command or the
MYID command. The default MYID of the SkyLine was 1234.
TOID FFFF The TOID of the M7 modem is set with the ATDT command or the
TOID command. The default TOID of the SkyLine was FFFF
(broadcast address).
A quick-configure command is included in the M
7, to allow it to be easily switch
to the M7 mode. The command is “SKYLINE”. When in the configuration mode,
enter SKYLINE, and the modem will reconfigure itself as a narrow-band SkyLine
modem, with TOID = FFFF, MYID=1234, 80 byte packets, 20mS serial port time
out, channel 1 frequency, over-the-air baud rate 5142.
13. Antenna Information
Key to a successful installation is the choice and installation of a good antenna
system. A good quality antenna can more than double the range of a radio
system. Properly locating the antenna is vital to creating a quality radio link, and
a poor installation can decrease the range of the system by as much at 90%.
Use these guidelines to evaluate your antenna system design, and be sure
contact a quality radio communication equipment distributor such as Talley
Electronics (http://www.talleycom.com ) to help choose the proper antenna for
your system.
To increase your communications range, located the antenna high as needed,
practical, safe, and allowed by your license. On fixed base-station applications,
you may utilize an antenna with gain. Note: The maximum Permissible Exposure