1. Product introduction:
ACUSTEK provides unique and professional technical monitoring and countermeasurement equipment and audio forensics solutions, such as audio analysis, speaker identification and recording tampering investigation. Our technical monitoring unit (TSU), technical monitoring countermeasures (TSCM) and audio forensic analysis products are mainly used in security organizations, police, audio forensic laboratories, law enforcement agencies and intelligence communities. Acustek is a leading international organization serving the audio forensics department.

ACU-LUX Professional Non-Linear Node Detector is designed to detect electronic devices containing semiconductor components. It can detect environments such as walls, houses, furniture, office equipment, vehicles and human bodies, and detect surveillance equipment such as wireless microphones. , Microphone amplifiers, tapes and digital recorders, etc., and these devices can be detected when turned on or off.

2. Technical principle:
When the microwave signal from the non-linear node detector encounters a transistor, a diode or a chip, it will reflect high-frequency signals; after these signals are received and processed by the detector, the second and third harmonics will be generated, the signal strength of which is determined by the LED The brightness of the lamp is displayed and the sound level received by the earphone is judged.
3. Product advantages:
The lightest node detector technology: when contacting transistors, diodes or chips, it emits a certain high frequency, so that the nonlinear node detector generates microwave signals, and the re-transmitted signals are received and processed by the antenna, the second and third The sub-harmonics will be accepted on the LED indicator and earphones.

20K low-frequency mode: You can listen to low-frequency devices, such as recorders, radios, and microphone amplifiers. It is a powerful tool for nonlinear device identification systems.

Resolution: The resolution of each LED indicator is 3dB, and the received signal can also be heard with headphones.

Unique design: ergonomic one-piece construction and light weight (1.3 kg with battery) with extendable/retractable handle, and the innovative spiral extension battery can extend the handle.

Automatic selection function: select the best frequency (not interfere with the GSM range) to allow the detector to work in a concentrated environment.

Adjustability: The transmission power of this nonlinear node detector and the sensitivity of the receiver can be adjusted at will.

?Efficacy: When the HT-ACU works in pulse mode, its power can reach 15 watts per pulse, which allows its receiver to achieve higher sensitivity (- /-120 dBm/150 decibels/W)

Four, technical parameters
transmitter
Frequency: 900.2 MHz ± 1 MHz

Step frequency: 200 kHz, a total of 21 channels (±10 steps)

Modulation mode: pulse

Maximum power transmitted per pulse: 15W±1W (maximum power mode)

The minimum power transmitted per pulse: 1.6 dB (3W minimum power mode)

Effective radiated power (60W antenna gain 6dB)
Receiver
Frequency: 1800.4 MHz and 2700.6±1 MHz (x2, x3)

Sensitivity of each receiver: -120 dBm S/N 3dB (150dB/W)

Dynamic range: at least 30 decibels

Manual receiver gain: four stages (±1dB) in each stage

The 20K mode transmitter transmits signals through sequence amplitude modulation: the demodulated signal has a spectral width of 500-2000 Hz.

Indication: Indication method: two independent LED bars corresponding to the second and third harmonics

Audio instructions:-Built-in speaker and headset support

Detection speed is up to 1 m/s (average 1 m in 3 seconds)

Business scope (depending on the type of detection element): low frequency module: 1-10 cm high frequency module: 2-3 meters
antenna
Number of antennas: 3, combined in a single module

Tx/Rx antenna at 3dB beam width: 90 degree level

Polarization of Tx/Rx antenna: ellipticity up to 1.5, circular polarization

TX/RX antenna: coaxial mode, the maximum deviation of the main lobe does not exceed 50
size
Length: 49 cm, completely flat without battery

59 cm flat battery

110 cm after fully extended including antenna

Width: 20 square centimeter antenna

Width pole: 4 cm

Length: 49 cm when lying flat (without battery)

5. Product list:
1 x ACU-LUX nonlinear node detector

1 x battery

1 x battery charger

1 x earphone

2 x target/test device

1 x soft carrying case

1 x Technical description and user manual (USB flash memory)