S D B C - D K 3 U G
Rev. 0.3
17
It can be seen from Table 3 and Table 4 that while the effects of antenna diversity on LOS environments are
negligible, the benefits in indoor/urban environments can significantly help create robust, higher quality robust
links.
Figure 19. Screen 4: Setting Up the Node Parameters
The Self ID on each card should already be selected and is contained in the EBID eeprom on the testcard. The
EBID is placed on the testcard so that our firmware and support GUI's (such as WDS) can recognize the
characteristics of the board. The EBID is NOT required as part of the bill-of-materials in an end customers design.
The EBID contains information such as the local ID, destination ID, matching network configuration and antenna/
test card configuration type.
Figure 20. Test Card Characteristics EEPROM (EBID)
The SDBC-DK3 is initially configured with the same value for the destination ID and the self ID. In order to run the
demo, you will need to configure the destination ID of the first board to that of the second and vice versa. This will
allow the two SDB boards to communicate with each other. The ID is considered the address.
7.1.5. Packet Length
The node parameters screen also allows users to adjust the packet length so that they may:
1. Perform head-to-head comparisons with competitive radios
2. Learn the effects of packet length with respect to data-rate and robustness
Many things affect the robustness of a radio link and often the lack of understanding of some of these variables can
skew test results quite substantially.
A good example of when this misunderstanding takes place is during head to head comparisons of different radio
IC suppliers. By using the 'packet length' option in the menu, users may adjust the length of the packet to match
such that they are looking at the same packet structure during their tests. (See section 7.7 for further details on the
packet structure)
Once designers are satisfied with their head-to head comparisons of the radio IC's having based their tests on
similar structures then designers can use the packet length option to experiment with their protocol. Packet length
can have many tradeoffs with respect to power savings, robustness, data rates, processing overheads, etc.
Summary of Contents for C8051F930
Page 2: ...SDBC DK3 UG 2 Rev 0 3 ...
Page 9: ...SDBC DK3 UG Rev 0 3 9 Figure 5 MSC DBSB8 Schematic 2 of 2 ...
Page 21: ...SDBC DK3 UG Rev 0 3 21 Figure 24 Active Antenna and RSSI Indications ...
Page 23: ...SDBC DK3 UG Rev 0 3 23 Figure 26 Lab Equipment Connection Diagram ...
Page 75: ...SDBC DK3 UG Rev 0 3 75 NOTES ...
