User's Manual

30/09/19 Page 36 of 44
AWR250 User Manual
The AWR250 supports four different Bluetooth profiles: Serial Port Profile (SPP), Human Interface
Device (HID), HID smart and Bluetooth Low Energy (BLE), where BLE is more or less another
technology rather than a profile.
SPP emulates a serial cable to provide a simple replacement for RS232 connections. Commands
can be sent into both directions – it uses virtual serial ports.
HID is used for ‘typing in’ the EID sent via Bluetooth into text fields of applications running on the
host device. This removes the need to develop a serial interface for the reader. The AWR250 is
connected to the host as a ‘virtual keyboard’. When the cursor is in a text field in the app running
on the host, the EID is filled into this field after a transponder has been read. Please note that it
is not possible to send commands to the AWR250 in HID mode – communication only works into
one direction here.
HID smart: Same as HID but the connection to the other device is only established after a
transponder has been read. This is required for the use with Apple devices because as long as a
Bluetooth device is connected as HID keyboard, the on-screen keyboard will not be available at
all.
BLE is reserved for special applications at the moment.
Choose the desired Profile using the / / / keys
and confirm with .
The AWR250 itself does not need a passkey. However, if other Bluetooth devices are using a
higher security level and they require one, the passkeys on both devices have to match, otherwise
the connection cannot be established.
Use the / keys in order to change the character and
the / keys to move to the previous / next digit. When
browsing through the list of characters, you can hold down
the or key in order to increase the scrolling speed.
The key deletes the last digit. If you hold it for at least
one second, all digits will be erased.
Press the key in order to set the passkey.
The menu item ‘Bluetooth Info’ shows some Bluetooth hardware and firmware related information,
the configured Bluetooth Mode & Profile and the connection status. Details concerning the color
of the Bluetooth symbol depending on the connection status are explained in chapter 4.1.2.2.