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Slave
LED Indicator
RF Link
Status
Broadcast mode
The RF link LED and status LED will turn on for 3 second after BLE-USB power on. The
connection had two roles – broadcaster and observer (scanner). Each role had different LED
pattern. The LED pattern was show in following table:
Broadcaster
LED Indicator
RF Link
Status
Observer (scanner)
LED Indicator
RF Link
Status
Status
Description
RF signal is good (RSSI is greater than -
Steady Lit
60 dBm)
RF signal is normal (RSSI is between -61
Blink (1 s)
and -80 dBm)
RF signal is bad (RSSI is between t-81
Blink (2 s)
and -100 dBm)
Blink (200 ms)
Not connect to master
Module initializes success(only turn on
Steady Lit
for 3 second after power on)
Blink (50 ms)
Module initializes fail(keep turn on)
Blink (200 ms)
Temporary Buffer was full
Blink (50 ms)
RF receive data (flash once)
Status
Description
The RF Link LED will keep on in the
Steady Lit
broadcast mode
Module initializes success(only turn on
Steady Lit
for 3 second after power on)
Blink (50 ms)
Module initializes fail(keep turn on)
Blink (1 s)
Broadcast is start
Blink (2 s)
Broadcast is stop
Status
Description
The RF Link LED will keep on in the
Steady Lit
broadcast mode
Module initializes success(only turn on
Radiate (ON)
for 3 second after power on)
Blink (50 ms)
Module initializes fail(keep turn on)
Blink (50 ms)
RF receive data (flash once)
BLE-USB, USB to Bluetooth Low Energy Converter (Ver. 1.0, Oct/6/2016) 13
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