XStream-PKG-R™ RS-232/485 RF Modem – Product Manual v5.x00
Cy clic Sca n ning.
Each RF tr ansm ission consist s of an RF I nit ializer and pay load. The w ake- up
init ializer cont ains init ializat ion infor m at ion and all receiv ing m odem s m ust w ak e dur ing t he
w ak e- up init ializer por t ion of dat a t r ansm ission in order t o be sy nchr onized w it h t he tr ansm it t ing
m odem and receiv e t he dat a.
Figure 3.7.
Correct Configuration (LH > SM)
Length of the wake-up initializer exceeds the time interval of Cyclic Sleep. The receiver is guaranteed to detect
the wake-up initializer and receive the accompanying payload data.
Figure 3.8.
Incorrect Configuration (LH < SM)
Length of wake-up initializer is shorter than the time interval of Cyclic Sleep. This configuration is vulnerable
to the receiver waking and missing the wake-up initializer (and therefore also the accompanying payload data).
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