865/868LP: What formula is used to calculate Sleep Guard Times?

XBee & XBee Gateway XBee - DigiMesh
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1

Situation: Battery powered 868LP network in Synchronous Cyclic Sleep Mode.

What exact formula is used by the RF Module to calculate the so called Sleep Guard Times?

We need to know this information to obtain an indication of the expected battery life time.

2

I would suggest reading over pages 71 - 81 of the product manual located at http://ftp1.digi.com/support/documentation/90002126_H.pdf. I believe it will answer your question.