shenzhen baichuan electronics
AUDIO SWEEPER 7116C
7116C provides a pure sine wave with very low total harmonic distortion. (approx. 0.1% THD ). The total harmonic distortion of 7116C consists of the 2nd Harmonic component only and nearly without higher order harmonic components. So, 7116C is very suitable for testing the sound quality ( spurious noise inspection ) of all kinds of loudspeakers, headphones, receivers, piezo, speakers systems…etc.
The frequency produced by 7116C is more stable than the ordinary beat frequency oscillator produced. and the sine wave provided by 7116C is purer than the ordinary function generator. Therefore, 7116C has the advantages of low distortion and high stability. do not use the ordinary function generator to test the spurious noise ( rattle and buzz ) of the loudspeaker, loudspeaker, receiver, etc.… Because users will easily neglect the prohibited spurious noise caused originally by the high-order distortion component of the function generator.
Model – 7116C
Freq. Range : 20Hz～20 kHz in one range.
Freq. Response: ≦±0.25dB, 20Hz～20 kHz.
Sweep Mode: Manually or automatically log. sweep in one range. Setting spot ( random ) frequency also available.
Signal: Sine wave, THD≦0.15%, (0.1% Typical.)( 20Hz ～ 20 kHz.)
Sweep Time: 0.3～40 seconds continuously adjustable.
Frequency Counter: 4 digits display.
Resolution: 1 Hz.
Accuracy: ± 1 Hz.
Load Impedance: ≧ 3.2 Ω.
Voltmeter: 3¾ digits, Auto-ranging.
Low Range: 0.000v ～3.300v.
Resolution: 0.001v
High Range: 3.300v ～40.00v.
Resolution: 0.01v.
Accuracy: ± 0.6% of reading ± 2dgts.
Dimension : 36 (L) ×27 (D) ×13 (H) cm.
Net Weight :
7116C ( 20W ): 6 KGS. ( Approx.)
7116C ( 60W ): 8 KGS. ( Approx.)
7116C ( 100W ): 10 KGS. ( Approx.)
Built-in Amplifier output voltage :
7116C ( 20W ) 7116C ( 60W ) 7116C ( 100W )
8 Ohms 0 ~ 12.6 V 0 ~ 22.0 V 0 ~ 28.3 V
4 Ohms 0 ~ 9.0 V 0 ~ 15.5 V 0 ~ 20.0 V
GAUSS METER 138A
For example: Ferrite Magnets、Flexible Rubber Magnets 、Rare Earth Magnets、Alnico Magnets…can all be tested by Model-138A. Also, Magnets for loudspeaker、headphone、microphone magnet、motor and relay, as well as other magnetism components can all use Model-138A to test its flux denstity.138A is especially designed with “Peak Hold” & “Auto Accumulating and Auto-Averaging” two functions, especially suitable to test the flux density of the magnetic gap of loudspeaker 、headphone and microphone…etc.