XBee ZB Firmware with Rabbit RCM4510W: Sleep Configurations Problems


I´m researching with RCM4510W and its Sleep Modes. If I set the SP value to 7, the real sleep period is 14 seconds and if I set the ST to 10 the time running is 17.5 seconds.

How can I to solve this?

Also the consumptions obtained differ of the consumption in RCM4510W datasheet.

Under what conditions were realized the Rabbit tests to confirm that the consumptions are 150mA (tx and rx), 80mA (waiting) and <20muA in Sleep Mode?