The detector operation is based on the property of semiconductor components to generate a response at the 2 nd and 3 rd harmonics when radiated by an UHF probing signal.
Semiconductor components of artificial origin will have a higher level second harmonic while semiconductor components of natural origin (e.g. oxide films) will have a higher level third harmonic respectively.
The NLJD analyzes the 2 nd and 3 rd harmonics response of the radiated objects, which enables a quick and reliable identification of electronic devices and natural oxide semiconductors.
The unique feature of the device in comparison with analogues is that it combines two detectors at different frequencies. The frequency of one transmitter is 790 MHz, and the other is 3600 MHz. Therefore the device has undeniable advantage over single-frequency devices due to:
- it is better to detect small-sized and high-frequency semiconductor devices at high frequency (ａnd vice versa);
- it is better to work in wet ground and concrete walls at low frequency;
- two antennas with wide (at low frequency) and narrow (at high frequency) direction diagrams enable to evaluate the situation first (at low frequency) and then to detect an object precisely using high frequency.
The NLJD automatically finds the best receiving frequency channel free of noise and distortion providing flawless operation in the complicated electromagnetic environment.
An embedded parabolic antenna with high gain (20 dB at 3600 MHz) enable high precise detection of semiconductor components in space. To make perator’s work easier the NLJD is equipped with a laser pinpointing a place where an antenna is directed.
There are two types of radiated signals:
- pulse modulated carrier with a duty cycle of 0.4 % (Pulse).
- pulse modulated carrier with a duty cycle of 6.0 % (CW).
Delivery Set and Accessories:
Receiver-transmitter unit with control unit and built-in battery container
Changeable Li-Ion batteries 2
Container for battery charging 1
Charger for receiver-transmitter unit (CH1) 1
Wireless phones including: receiving device, earphones and charger (CH2)
Technical Description & User manual, Certificate
