LED indicators



The Nordic ID EXA51e includes three LEDs for user indications. Location of the LEDs can be seen from the picture




READ/HID/CONFIGURABLE LED


By default, Read/HID/Configurable LED indicates whether RFID or barcode reading is active. The Read/HID/Configurable LED can be configured via API if needed.



BLUETOOTH LED



The Bluetooth LED indicates whether the Bluetooth connection is On/Off or in search mode


POWER LED



The Power LED indicates whether the reader is On/Off it also indicates the battery level of the reader. The battery level is indicated by the colour of the Power LED. 



NOTE! Wireless charging is disabled when battery level is low (Power LED is red)



Blinking of the Power LED indicates that the device is charging. The battery level during charging is indicated by the colour of the blinking Power LED.


                                        


Buzzer




The Nordic ID EXA51e includes a buzzer which can be used to give an audible indication to user. By default, the buzzer beeps in the following situations:

  • The reader is turned On/Off
  • Bluetooth unpair done
  • Bluetooth is connected/disconnected
  • During HID operations
  • When barcode is read successfully




Antennas



The Nordic ID EXA51e includes Adaptive Cross Dipole antenna that includes four SW controllable (via Nordic ID RFID demo application and NUR API) antenna modes that are

  • Linear with horizontal and/or vertical polarization mode
    • Nominal reading distance about 10m/33ft
  • Circular polarization mode
    • Nominal reading distance about 6m/20ft
  • Proximity mode:
    • Reading distance down to 1cm/0.4inch



NOTE! The reading range depends on used tag and environment



The linear antenna modes are intended for long range reading when tag density is high and tags are in horizontal or vertical position (Picture 1). In most cases enabling both linear antenna modes do provide the best performance. The circular polarization mode is intended for use cases requiring medium range reading and alignment of tags is random (Picture 2). The circular polarization mode works well if good performance tags are used and the tags easily readable. The proximity mode is ideal for locate and tag writing functionalities but shouldn’t be enabled if not needed because it will slow down reading speed.


                                           Picture 1 in horizontal and vertical alignment                         Picture 2 Tags in random alignment