Mobile radio repeater for gsm900mhz coverage150sqm Cellular booster is used to solve the problems of: 1 poor signal 2 dropped calls 3 limited coverage 4 slow data speed Carton packaging dimension for full kit: 85*25*20cm dimension for the mobile enhancer only: 20*15*5cm
Here are the specifications of the new version: * The program works with the Audio Analyser ATB 701 * The program includes the comfortable ATB 701QC program * Setting of the definition without script, there is no need of learning to program * Tolerance field is easy to set automatically or with the mouse * Rub&Buss is tested with the signal 13 to get a nonlinear distortion measurement * Surrounded noise does not disturb the Rub&Buss measurement because of the Q-Index calculation Measurement functions 1. Total Harmonic Distortion THD 2. Intermodulation Distortion, IMD 3. Frequency response(SPL) 4. Impedance(IMP) 5. Polarity Test 6. Thiele-Small Parameter 7. Phase 8. Step response 9. Quality Control Program Thiele-Small Parameter Frequency response of phase Intermodulation Distortion IMD Total Harmonic Distortion THD Quality Control Program Rub&Buss measurement Passed Rub&Buss measurement Failed 1. Frequency response The frequency response is tested with the M-PN signal. The measurement with this periodic noise gives the highest accuracy. The tolerance mask can be set automatically or manually. 2. Rub&Buss measurement The Rub&Buss is tested with the signal 13. The signal 13 consists of two sine-sweeps with the frequency ratio of 1 : 1.3. This signal is showing all resonances of the unit under test. For the passed and failed decision the Q-Index is calculated. The index is calculated from all frequencies higher than the second frequency of the test signal 13. The account is set into proportion to the amplitude of the test signal. The best speaker has the highest Q-index. The Rub&Buss measurement has following tests. Calculation of error 1. THD, K2,K10 The test is for the controlling of the placement of the voice coil. 2. IMD The test is for the controlling the gluing, loose particle and if there are cone touching of connection wires. 3. Frequencies > K5 The test is for the controlling of voice coil rubbing the magnet. 3. Distortion THD Test The THD test tests the harmonic distortion. The test signal is a sine wave with frequency to select. Because this test is included in the Rub&Buss test it is only for the special demand of the manufacturer. In the definition there is to set the maximum THD and the frequency. 4. Polarity Test The polarity test is for testing the wiring. It is for speakers, headphones and microphones. The test signal is a half sine wave. In the time response the program calculates if the positive or negative amplitude is the greatest value.
Features: Ï?200um Active Diameter High responsivity Low capacitance Low Capacitance and High Speed with a PIN structure Application: Rangefinder Measuring Instrument Fiber-optic Datacom
Descriptions: The LD/DFB-TO-1310 series laser is uncooled semiconductor DFB chips with MQW structure working at1310nm typical emission wavelength.The device is in hermetic TO56 package with intergrated InGaAs PD as optical power monitor. The products are Telcordia GR-468 qualified, and in compliance with RoHS requirement. Features: Data rate up to 10Gbps; 1310nm typical emission wavelength; Good high temperature characteristics; Uncooled DFB/LD chips with MQW structure. Application: Data communications; PON,Access,Ethernet,Fiber Channel,SONET; Other optical transmission system.
The Semiconductor Optical Amplifier Devices at 1310nm and 1550nm are designed by using a high quality angled SOA chip and a TEC which can assure a stable amplified output for a large dynamic input signal. The devices are available in a standard, 14-pin butterfly package at the 1310nm and 1550nm bands. The SOA devices have high optical gain, high saturation output power, low polarization dependent loss, low noise figure and broad wavelength range. We have options of optical isolators for input and/or output side as well as output fibers of SM fibers, PM fibers and other special fibers per customer specifications. The products are Telcordia GR-468 qualified, and in compliance with RoHS requirement.
The Superluminescent Light Emitting Diode Broadband Light Sources developed as incoherent light sources for various optical measurements.The laser diodes emits incoherent light having wide spectral half width and high output power from polarization maintaining fiberor SM fiber. The laser diodes contain thermo electric cooler (TEC), thermistor and optical isolator to secure high quality laser performance. Our laser products are Telcordia GR-468 qualified, and in compliance with RoHS directives. Features: Wavelength can be selected(1310nm,1490nm,1550nm,1610nm) Low Spectralripple, Broad bandwidth Industry-standard, 14-pins butterfly package Built-in optical isolator Low polarization sensitivity Application: Fiberoptic communications system Fiberoptic Gyroscopes Fiberoptic sensors Optical test instruments Optical coherence tomography Biomedical imaging systems
The NLLD series directly modulated external cavity laser is cost effective solution for 2.5 Gbits/s digital transmission in SMF-28 fiber. This is fabricated in a hermetically sealed 14-pin butterfly package that contains thermoelectric cooler (TEC), thermistor, monitor photodiode, optical isolator. The NLLD provides substantially lower dispersion penalty and lower chirp than a directly modulated DFB. The wavelength stability is assured by design, eliminating the need for wavelength lockers and complex feedback control circuits. Features: ITU wavelengths across C-band 100 GHz channel spacing SONET/SDH OC-48/STM16 ring and meshed applications Low dispersion provides Low transient chirp provides unique narrow dynamic spectrum Excellent long-term wavelength st ability eliminates the need for a wavelength locker Application: Metro and Long Haul DWDM,100 GHz spaced networks SONET/SDH OC-48/STM16 ring and meshed applications Drop-side of DWDM long-haul transport equipment Optical Test and Instrumentation Microwave Photonics CATV networks Sensors
Professional audio products: loudspeaker, power amplifier, digital amplifier, mixer, wireless microphone, conference system, processor, audionet.
Loudspeakers, mixers, digital amplifiers, power amplifiers, processors, wireless microphones, conference systems, active loudspeakers, line array loudspeakers, active line array loudspeakers, drivers.
Repeater, booster, amplifier.
Microphone, amplifier.
Audio amplifier.
Audio products like amplifier and mixer.
Mixer series, professional amplifiers, loudspeakers, microphones, dj mixer, cd player and other circumjacent equipment series.
Signal repeater, booster, amplifier and antenna.We are specialized in manufacturing communication products including signal repeater, booster, amplifier and antenna
Telecom parts and amplifier.
Car audio with navigation.
Multiroom audio system, keypad, volume control, ceiling speakers, wall-mounted speakers, connections plates, wall plates, whole house music system, audio/video distribution, home entertainment, PA system, distributed audio.
RF controller, IR controller, dimmer (touch panel dimmer, triac dimmer, 0-10V dimmer), dmx controller, LED amplifier, dream color controller, dali bus control.
Cellphone amplifier, signal detector, cellphone blockers, phone blockers.
