DDAA1000/SRM User Guide
Main Menu Option (3): Edit Radio Transmission Characteristics
When option (3) is selected in the main menu the screen in figure 14 appears, which allows the user to modify the radio transmission characteristics of the radio modems. As stated in the warning, these parameters are for the experienced user who has a good understanding of the principles of radio data transmission. They should be changed only after consulting this user guide.
It is important to note that the radio parameters between any radio modems in communication will be determined by the settings for the master (except when in
Figure 14: Radio Parameters Menu
Shown below are example settings. Please refer to supplied configuration sheets for your modem’s configuration.
(0)FreqKey
Selection (0) in the Radio Parameters menu allows the user to modify the hopping patterns of the radio modems to minimize the interference with other
There are 15 choices available for the Frequency Key
(1)Max Packet Size and (2) Min Packet Size Selections
For DDAA1000/DD1000 use the user should not change this parameter.
(1)and (2) allow the user to designate the size of the packets (in bytes) used by the radio modem in its communication link. Packet size is determined by a combination of the settings entered by the user and the RF Data Rate. In addition, the Max Packet Size is a function of the setting selected for the Min Packet Size. Tables 3, 4 and 5 provide the packet sizes for each different combination of settings.
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rev 8/04
