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BKF10 
automatic  distortion  analyzer 

OPERATING 

INSTRUCTIONS 

INTRODUCTION 

The  BKF10  Automatic  Distortion  Analyzer 
provides  fully  automatic  total  harmonic 

distortion  and  amplitude response measure­

ments  with  comprehensive  facilities  for 

automatic  recording  of  the  measurements, 
and  external  control  facilities  that  enable 

it  to  form  a  natural  part  of 

·

automatic  test 

systems  instrumentation.  The  BKF10  is  in­

tended  for  measurements  on  Hi-Fi  equip­
ment,  broadcast  transmissien  lines,  audio 
studio  equipment,  etc.,  and  provides  facili­
ties  for  measurements  in  accordance  with 
the  relevant  sections  of  DIN  45,500. 

Because  of  its  rather  special  nature,  it  is 

strongly  recommended  that  these  operat­
ing  instructions  are  read  completely  be­
fore  taking  the  BKF10  in  use. 

Instructions  are  given  for  the  basic  operat­
ing  routine,  which  is  the  same  whatever 

.the  application,  so  that  the  user  will .quick­

Iy  become  familiar  with  the  BKF10  and  its 

facilities. 
A  short  description  of  the  internal  function 
of  the  BKF10  is  included  to  assist  in  un­
derstanding  the  principles  of  its  operation. 
All  measurements  made  with  the  BKF10 
can  be  recorded. 

While  almost  any  x-y  or  x-t  recorder  may 
be  used  with  the  BKF10,  preference  should 
be  given  to  the  Radiometer  REC61S2  Ser­
vograph,  an  x-t  recorder  fully  compatible 
with  the  BKF10,  which  includes  all  the 
necessary  interface  items  (interface  unit, 
interconnecting  cable  and  specially  cali­

brated  recording  charts)  for  making  re­
cordings  with  a  high  degree  of  accuracy 
and  resolution. 

It  is  our  intention,  from  time  to  time,  to 
issue  Application  Notes  concerning  speci­
fic  applications  of  Radiometer  products . 

Please  call  your  nearest  Radiometer  repre­

sentative  and  have  him  send  you  any  Ap­
plication  Notes  available  for  the  BKF10. 

COPENHAGEN 

Summary of Contents for BKF10

Page 1: ...the basic operat ing routine which is the same whatever the application so that the user will quick Iy become familiar with the BKF10 and its facilities A short description of the internal function o...

Page 2: ...3 V Sensitivity in 30 V 10 kfl setting 20 dB attenuator switched into input circuit 100 mV to 30 V 13 SIN pushbutton Depress button and read off SiN ratio directly on dB scale of Distortion Meter 14 L...

Page 3: ...by the LEVEL CON TROL switch 16 Example MAX INPUT switch is at 30 V the dB and 20 dB lamps are lit and the meter reads 7 dB Then the true IN PUT OUTPUT ratio is 7 dB 20 dB 13 dB OUT OF RANGE LAMPS a...

Page 4: ...PUT FREQUENCY dc analogue voltage of oscillator output frequen cy 3 V at 20 kHz to 0 V at 20 Hz 1 V decade f Expression Vdc log Volt 20 Hz Jack 23e INPUT FREQUENCY dc analogue voltage of INPUT FREQUEN...

Page 5: ...panel Pins 7 to 13 No connections Pin 14 3 V dc bias max 5 mAl for record ing see RECORDING below Equivalent to jack 21c X V RECORDER Recording distortion as a function of frequency 1 Connect the x a...

Page 6: ...front panel These fil ters allow the measurements of or the suppression of any hum and noise present in the input signal The frequency measuring section includes the frequency measuring circuit and t...

Page 7: ...20 Hz 20kHz SIN range Recorder output voltage HP LP filter Cult off frequency Attenuation Input output ratio meter Frequency range Measuring range Accuracy Recorder output voltage Sp V rms 50 dB appr...

Page 8: ...RADIOMETER COPENHAGEN _...

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