Frequently Asked Questions
Q: Why should I select Data-Linc's FastLinc IEEE 802.11b compliant modem for my industrial application?
Q: We've been using frequency hopping spread spectrum (FHSS) for data transmission. How does direct sequence spread spectrum (DSSS) compare to FHSS?
To deal with noise, direct sequence continuously spreads data across a wide portion of the frequency band. Shifting the center of the spreading code (either done automatically or manually) allows the transmitted data to be moved out of the noisy are of the spectrum.
Frequency hopping, on the other hand, takes incoming data and breaks it down into smaller individual packets, which are then sent on separate frequencies. Once the packets have been transmitted, the data is recompiled in its original format. If a packet cannot be successfully sent on a given frequency, it is resent on another.
Q: I already have a PCMCIA card for my laptop. Why can't I use that?
Q: For an in-plant short range application, how do I determine whether the 2.4 GHz SMR or the FastLinc 802.11b is better for my needs?
Read more about the Data-Linc FastLinc Family of 802.11b modems. See also the Data-Linc SRM Family of Smart Spectrum long range, extended temperature modems designed for the most challenging of industrial environments.
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