Korean Hagisonic Ultrasonic Sensor Module - HG-B40A, HG-B40C

Korean HagisonicUltrasonic SensorsModuleHG-B40C Features:
Low power consumption, high sensitivity.
Multiple input/output modes optional.
Automatic sensitivity control function, proportional to the upper limit of distance error.
Same application standards as existing foreign products, and can be mutually substituted.

Korean Hagisonic Ultrasonic Sensor ModuleHG-B40C Parameters:

Frequency (kHz)	40±2
Transmission Mode	Free Running	No Connection
	External Trigger	TTL Pulse (100~700μs)
		Repetition Rate (10~30 times/sec)
Receiver Output Signal	Analog	Baseline 2.5 V, Max. ±2 V
	Real-time Pulse	4~5 V TTL, detects all objects
	Distance Pulse	4~5 V TTL, detects only the nearest object
DC Input	Low Voltage Type (5 V dc)	0~3 m (General, HG-B40C) 0~3 m (Anisotropic, HG-B40A)

Korean Hagisonic Ultrasonic Sensor ModuleHG-B40C Terminals and Parts Description:

① GND
② DC Input Power Terminal: 5V±0.5V (low voltage type only), 6~16V (high voltage type)
③ Distance Pulse Output: pulse width proportional to distance
④ Received Analog Signal Output: amplified received signal (real-time)
⑤ Received Pulse Output: real-time square wave form of receiver
⑥ Internal Ultrasonic Frequency Adjustment VR (VR1): 40 kHz ±2 kHz (factory adjusted) <Do not change this setting>
⑦ Receiver Gain Adjustment VR (VR2)
⑧ GND
⑨ Trigger Input/Output:
- External Trigger Mode: signal input (recommended pulse width TTL 100μs~700μs)
- Free Running Mode: (internal trigger): transmit timing signal output (monitoring)
⑩ Transmission Mode Selection Board (JP2):
- External Trigger Input Mode: open
- Free Running Mode: solder short (factory default)
⑪ Automatic Time Gain Control (T.G.A) Mode Selection Board (JP1): automatic gain control (open), Max fixed gain (solder short)
⑫ DC Input Power Selection Board (JP3): 6~16V high voltage type, factory default
- 5V low voltage type: solder short
- 6~16V high voltage type: open (factory default)