Leica TPS1200 user manual Description of LED Indicators, Then

Operation			TPS1200		60
	Description of LED Indicators
	IF the	is		THEN
	TRK	off		no satellites are tracked.
		flashing green		less than four satellites are tracked, a position is not
				yet available.
		green		enough satellites are tracked to compute a position.
	BT	green		Bluetooth is in data mode and ready for connecting.
		purple		Bluetooth is connecting.
		blue		Bluetooth has connected.
		flashing blue		data is being transferred.
	PWR	off		power is off.
		green		power is okay.
		flashing green		power is low. The remaining time for which enough
				power is available depends on the type of survey, the
				temperature and the age of the battery.