User's Manual

USER MANUAL PREVIEW

PTM 535BZ – BLUETOOTH AND ZIGBEE GREEN POWER PUSHBUTTON TRANSMITTER

B. Receiver configuration for BLE

PTM 535BZ transmits sensor information as a set of advertising events either on the BLE

advertising channels or on user-defined radio channels as described in Chapter 3.2.

To maximize the likelihood of reception of these telegrams, it is necessary that the receiver

is either permanently in receive mode on one of the radio channels used by PTM 535BZ or –

if this is not possible – periodically in receive mode for a sufficiently long duration.

B.1 Scanning parameters

Three key timing parameters have to be considered when configuring a receiver (scanner)

for periodical reception of advertising events sent by a transmitter (advertiser). These three

parameters are:

 Advertising interval

Time between two advertising events sent by the transmitter

 Scan interval

Time between the start of two consecutive scanning cycles of the receiver

 Scan window

Duration for which the receiver will scan within each scanning cycle

Figure 57 below illustrates these three parameters.

Advertising Interval

Advertiser

(Peripheral)

Scan Window

Scanner

(Central)

Advertising

Scan Interval

Time

Figure 57 – Scanning parameters