Crossbow Technology CXM539, User Manual

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CXM539 User’s Manual
Doc.# 6001-0014 Rev1.2 Page 15
7 Appendix B. Filter Values and Data Rates
A table containing some filter values and corresponding data rates,
resolution and frequency tested on CXM539 at 38.4K baud is provided
below.
Filter
Value Text
Data
rate
(/sec) Binary
Data
rate
(/sec) Raw
Binary
data
rate
(/sec) A/D
Sample
rate
(/sec) A/D
Resolution
in bits -3db
Frequency
(Hz)
8000 150 150 150 150 17.5 39.3
6000 200 200 200 200 17 52.4
4000 240 300 300 300 17 78.6
3000 240 370 400 400 16.5 104.8
2000 240 370 548 600 16.5 157
1800 240 370 548 800 16 209
1000 240 370 548 1200 15.5 314
900 240 370 548 1600 15 419.2
800 240 370 548 2400 14 629
600 240 370 548 3200 13 838.4
400 240 370 548 4800 12 1260
300 240 370 548 6400 11 1676
X
NOTE
For the text data (hex data was sent), the data sample length was 16 bytes
and hence the baud rate will limit the data rate to 240 samples/sec.
For binary data, the data sample length was 7 bytes and hence the baud rate
will limit the data rate to 548 samples/sec.
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