Sunlight 7116c-100W Audio Sweeper

7116C provides pure sine wave with very low total harmonic distortion. (approx. 0.1% THD ).  The total harmonic distortion of 7116C consists of 2nd Harmonic  component only and nearly without higher order harmonic components.  So,  7116C  is very  suitable  to test the sound quality ( spurious noise inspection ) of all kinds of loudspeaker, headphone, receivers,  piezo,  speakers  system…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 both advantages of low distortion and high stability.  do  not use the  ordinary  function  generator  to  test  the  spurious  noise  ( rattle and  buzz ) of loudspeaker, loudspeaker, receiver,  etc.…  Because  user  will  easily  neglect the  prohibited  spurious  noise  caused  originally  from the high order  distortion  component of the function generator. 

1. Power: power  switch  &  indicator 2. Fo: The  lowest  resonant  frequency  Fo  test  pushbutton. 3. Start: By  depressing  this  button,  The desired start frequency can be set  by adjusting the  coarse  knob  (5) and  fine knob  (6)  of  〝 Start 〞.  the start frequency  can be  set  in  the  range  of  20Hz  to  20KHz.  the  frequency  will  be displayed  on 〝 Frequency  Counter  (14) 〞in  the  front  panel. 4. Stop: By  depressing  this  pushbutton,  The stop frequency can be set adjusting the stop knob (7).  The  stop frequency also can be set in the range of 20Hz to 20KHz and can  be  displayed  on  〝 Frequency  Counter  (14) 〞in the panel.   

13 14 567

1 12 2384 10 11 9

- 10 

5. Coarse ( Start ) : The  coarse knob of start adjustment  for  setting the start  frequency. Please  depress  the  start  pushbutton  before  adjusting the  coarse knob. 6. Fine ( Start ): The fine knob of start adjustment for setting the start frequency. This knob is convenience for researching the lowest resonant frequency  because  the  frequency  variation is  tiny. 7. Stop: The  stop  knob  of  stop  adjustment  for  setting  the  stop  frequency. Remember  to  set  the  stop  frequency  always  higher  than  the  start frequency.   8. Auto / Manu: When  depressing  the  button,  The  output  signal  of  7116C  will sweep forth  and  back  automatically  between  the  range  set  by  the start  adjustment  knobs  and  stop  adjustment  knob.  If  button  (3)  or (4)  is  depressed,  The  7116C  will  output  a  signal  of  constant frequency  by  adjusting  start  knobs  or  stop  knob,  And  7116C  will be  functioned  as  a  manual  sweep  generator. 9. Sweep: Sweep time control knob with scale in second. Sweep time is continuously  adjustable  in  the  range  of  0.3  sec.  to  40  sec.    10. Coarse ( Volume ): For  adjusting  the  output  voltage  in  great  variation. 11. Fine ( Volume ): For  adjusting  the  output  voltage  in  small  variation. 12. Output: The  output  terminals  to  the  tested  item. 13. Output  Voltage  Meter: A digital autoranging R.M.S.  voltage meter  indicating  the voltage  from  the  output  terminal.  14. Frequency: 4  digits  display,  20Hz～20KHz,  Resolution:  1 Hz  counter. 

 Frequency  Range: Cover  20Hz  to  20KHz  in  one  range,  ( usually  under  15Hz and  higher  than  21KHz ). 2. Frequency  Counter:  4  digits  display,  resolution  1Hz,  accuracy    ±1Hz. 3. Signal: Sine  Wave,  THD.<0.15%  ( 1KHz,  10V ),  THD. 0.1%  typical. 4. Power  Output: 7116C ( 20W ) 0－ 12.6V 8 OHMS  load.    ( At  rated  line 0－ 9.0V 4 OHMS  load. 

   voltage ) 7116C ( 60W ) 0－ 22.0V 8 OHMS  load. 

 0 － 15.5V 4 OHMS load. 7116C ( 100W ) 0－ 28.3V 8 OHMS load. 

 0 － 20.0V 4 OHMS load.    Continuously  adjustable  with  short  circuit  protection. 

5. Voltage  Meter: 3 3/4  Digits,  autorange   ( Two  Ranges ). Low  Range: 0.000V－3.300V ( Approx. )  Resolution  0.001V High  Range: 3.30V－38.00V ( Approx. )       Resolution  0.01V Accurancy:     ± 0.6% of reading ±2dgts.