Number of Successive Scan Windows in One Page Scan Frequency

Original Post: page scan hop rate (SIG Forum) Date: 2000-08-31

In the page scan substate, a unit listens for its own device access code for the duration of the scan window T_{w page scan} During the scan window, the unit listens at a single hop frequency, its correlator matched to its device access code.

The scan window must last a minimum of 16 page hop frequencies (10ms) and must only be on one scan frequency. i.e., a scan window cannot continue into the next scan frequency if the 1.28s time has been reached . So you could have (theoretically ) up to 128 sequential scan windows in one scan frequency

Note: Even though the specs state that 'the scan window must be long enough to completely scan 16 page frequencies' it takes 10ms, not 5ms (due master paging twice in one slot - one slot 0.625ms) . This is because the scan window must include both TX and RX slots. If you were only concerned about RX slots then 16 page frequencies adds up to 5ms. However you must also include the times for the TX slots in between so the overall time for the page scan window becomes 10ms