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Products Guide ================= |
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| Stand alone instruments for testing the Loudspeaker or Receiver unit : | ||||
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Model - 7116C ( Audio Sweeper ) 7116C Audio Sweeper provides sinusoidal signal, which is the best suitable to test the spurious noise ( rattle & buzz ) and to perform operation test of various kinds of electro-acoustic components. 7116C is well-suited for manufacturers of loudspeaker, headphone, receiver, buzzer and alarm…. etc. in their R&D, quality control and production line applications. 7116C contains a frequency meter 、 a digital display voltmeter and a power amplifier, no need to buy other equipment, can be able to perform directly the testing for the aforementioned electro-acoustic components. Model - 7117C ( Digital High Speed Fo Meter ) The Lowest Resonant Frequency Fo value is one of the important parameters of the loudspeaker , 7117K can automatically & instantly display the Fo value of loudspeaker in digits , no manual searching is needed, moreover . The Upper / Lower limits can be set by 7117K , auto judge the PASS / FAIL , very suitable in production line for 100 % Q.C. testing. 7117K is not only suitable for loudspeaker firms , but also suitable for : incoming inspection of the loudspeaker by the audio 、 monitor 、 multimedia firms....etc. Model - 152A ( Impedance Meter / Frequency Counter ) Electro-acoustic component has different impedance under different frequency , needs to set a suitable frequency to test the rated impedance of such component . 152A contains : a 20Hz ~ 8kHz signal generator , two LCD display frequency & impedance . Upper / Lower limits can be set . Very fast in auto judging the PASS/FAIL , suitable for 100% Q.C. in production line. 152A suits for the loudspeaker 、 headphone 、 receiver firms, also suitable for incoming inspection of the audio 、monitor & multimedia firms. Model - 139B ( Loudspeaker Polarity Tester ) In a HI-FI Stereo System, Loudspeaker & Headphone with a correct polarity is very important. If the phase ( polarity ) was reversed, HI-FI Stereo’s effectiveness would be seriously affected. 139B is not affected at all in a noisy place, and can judge at once the polarity of the loudspeaker and headphone. 139B can be connected with 152A, 7117K, 7116C to test 4 parameters. Only one operator is needed ( see left page ). 139B is suitable for loudspeaker system, loudspeaker, multimedia, monitor, headphone and audio firms. Model - 138A ( Gauss Meter ) 138A is designed with the " Peak hold ", auto accumulating & auto-averaging functions. 138A is suitable to test the flux density of the magnetic gap of loudspeaker, microphone.. etc. Model - 8121C ( Noise Generator ) Model-8121C generates " Pseudo Random Noise " by using Digital Technique, this is the most advanced method for generating the audio white noise. The conventional noise generator practically generates only the white noise & pink noise, it needs to combine with weighting filter 、 power amplifier and true rms voltmeter ( a total of 4 circuits) before it can be used to test the loudspeaker. 8121C consists of all the aforementioned 4 circuits, it can generate pink noise, white noise & 3 other kinds of weighted noise that comply with the standards of the countries. If special noise spectrum is needed, the user can insert a self-made weighting filter between the noise signal output and power amplifier input terminals. Instrument System :
New sets ------> Type 1600C (High Speed Auto Electroacoustic Test Set)
1600R 1840R For Testing the Receiver Unit. 1600T 1840T For Testing the ECM or Dynamic Microphone Unit. 1600RT For Testing the Hand free kit ( or Handset). 1600S 1600F 1840S For Testing the Loudspeaker Unit or Loudspeaker System. 1600H 1840H For Testing the Earphone or Headphone. 1600M 1600MDN For Testing the ECM or Dynamic Microphone Set. 1840C For Testing the Crossover Network.
1700 For Testing the General Telephone 、 Coreless Phone. 1760 For Testing the I-Phone 、 V-Phone 、 Speakerphone. 1900 For Testing the Cellular Phone.
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