Reference Manual

8.15 RF_ScanTiming: Modify the scan timing
Settings
index
Designation
Permissible
values
Default value
Permissions
Number
of
Bytes
9
RF_ScanTiming
0 - 11 1
read/write
1
The RF_ScanTiming enables the possibility to configure the timing behavior of the module’s
RF interface during advertising and scanning state. Using this parameter several predefined
configurations can be chosen, which include timing parameters, such as the frequency of
advertising packets and the length of a scan window.
The choice of the RF_ScanTiming primarily affects the latency of device detection on air as
well as the current consumption. The lower the RF_ScanTiming , the faster the modules can
find each other for communication, but also the more power will be consumed.
RF_ScanTiming 0 1 2 3 4 5 6 7 8
1
9
1
10
1
11
1
Advertising
interval [ms]
20 40 60 80 100 120 250 500 1000 2000 5000 10240
Scan window
[ms]
25 50 80 100 120 150 312 600 1250 2500 6250 10240
Scan interval
[ms]
Defined by the RF_ScanFactor .
Connection setup
timeout [s]
1 2 2 2 2 2 2 4 5 10 20 35
Current
consumption
High
. . .
Low
Further information:
• In ACTION_SCANNING mode, the scan interval defines the time after which the module
switches channel to detect other BLE devices in range. See also RF_ScanFactor .
• In ACTION_SCANNING mode, the scan window defines the section of the scan interval,
where the module is scanning. During the remaining time, the module enters a sus-
pend mode (system-on mode). See also RF_ScanFactor .
• In ACTION_IDLE mode, the advertising interval defines the time after which the module
periodically sends its advertising packet. In between, the module enters a suspend
mode (system-on mode).
• The connection setup timeout defines the time after which a connection request has to
be answered by the peripheral.
1
Mainly suitable for transmitting data using Beacons without consuming much energy.
Proteus-III reference manual version 0.11 © November 2019
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