Power/pairing button, Leds – Measurement Computing BTH-1208LS User Manual
Page 13
BTH-1208LS User's Guide
Functional Details
13
Power/pairing button
The power/pairing button has different functions depending on the power source of the device.
The term pairing refers to one function of the button – to put the device in pairing mode so it can establish an
association between the Bluetooth radio on the host device and the BTH-1208LS radio.
Button functions are listed in the table below.
Power/pairing button functions
Power Status
Button Functions
Battery powered
To power on the device, press and hold the button for 3 seconds. To enter pairing
mode, hold the button for an additional 2 seconds.
To remove the device from pairing mode, press and hold the button again for 2
seconds.
To power off the device when not in pairing mode, press and hold the button for 2
seconds
Powered by USB charger/USB
power supply
To put the device in pairing mode when it is powered on, press and hold button for 2
seconds.
To remove the device from pairing mode, press and hold the button again for
2 seconds.
Powered by USB host port or
hub
The power/pairing button is disabled.
LEDs
The Power LED indicates the power status of the device. The Status LED indicates the communication status of
the device.
LEDs cannot be disabled. LED states are listed in the tables below.
Power and Status LED behavior
Power LED
Indication
Steady green
The device is powered by USB and the batteries are sufficiently charged or not installed.
Blinks
continuously
If the device is connected to USB port/host, then the batteries are recharging (only if rechargeable
batteries are installed).
If the device is not connected to USB port, then it is powered by batteries.
If the Power LED is blinking alternately with the Status LED, then the device is in pairing mode.
Off
Device is off.
Status LED
Indication
Steady green
Bluetooth or USB connection established
Blinks
continuously
Communication with host computer occurring over Bluetooth or USB connection.
If the Status LED is blinking alternatively with the Power LED, then device is in pairing mode.
Off
A Bluetooth or USB connection is not established