Oxitone 1000M
User Manual Rev. 1.
Page 25 of 39
If the user presses the button (accepts the connection) the devices will be connected, and the
watch will start searching the measurement data to the host.
If 15 seconds passed and the user did not accept the connection, the watch will reject the
connection request. The device that tried connecting to the watch will not be able to connect
for a whole minute (to prevent multiple connection requests).
After the first time the user accepts a connection, the host ID is saved to the watch, and the
next time the same host will try to connect, the user will not be asked to accept the
connection (the connection will be approved automatically). The watch "Remembers" only
one host at a given time.
9.2.1 BLE Connectivity Overview
BLE Technology
BLE (Bluetooth Low Energy) technology allows wireless connections between electronic devices. The
technology is based on a radio link that offers fast and reliable data
transmissions. BLE uses a license-free, globally available frequency range in the ISM band, which
ensures communication compatibility worldwide.
Oxitone's use of BLE technology allows all the device's measurements to be transmitted compatible
BLE-enabled device. BLE connectivity gives patients increased ability to move freely.
BLE indications
There are 3 indication of the BLE state:
White BLE symbol - indicates the BLE is functioning but not connected.
Blue BLE symbol - indicates the device is connected to another device.
Red BLE symbol - indicates there is a problem with the BLE component, if the indication persists after
a power cycle the device needs servicing in Oxitone service center.
BLE Roles
BLE roles are split into pre-connection and post-connection:
Pre-connection
At startup a device is either a peripheral or a central.
A peripheral advertises itself and waits for a central to connect to it.
A central scans for other devices, a central is usually a smartphone or PC.
After a peripheral makes a connection it’s called a slave, and after a central makes a connection it’s
called a master.
Post-connection
After a BLE connection has been established, devices can be either a client or a server.
A client accesses remote resources, a client is usually the master (host).
A server has a local database of resources (profiles/services/characteristics), it provides resources to
the remote client. a server is usually the slave.
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