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4  

  KCS-ID Manual 

Klippel R&D System 

Note:

 Bl(0)  can only be imported if no laser is used (switch off 

Laser Connected

  in the 

Peripherals

 

category). If a laser is used (which is highly recommended), Bl(0) is identified accurately on the KCS 
Server.  

 

1.4.2

 

Additional Options 

Stimulus 

The 

Stimulus

 settings are set to 

Automatic

 by default. You can select a higher 

Start Voltage

 if you 

use a big speaker and want to accelerate the ENLARGEMENT MODE. In some cases, the 

Level

 might 

be set to 

Manual

 to fine-tune 

X

max 

(see 1.6.2).  

Peripherals 

Select whether laser/microphone sensors are used in this measurement. It is recommended to use 
both,  however  sometimes  the  laser  might  not  have  access  to  the  transducer’s  membrane  and 
cannot be used. Note that a microphone calibration is not required for this measurement. 

Advanced 

Save  Intermediate  Results

  saves  the  results  of  each  measurement  block  into  a  new  KCS  Monitor 

operation. It is not recommended to activate this option. However, KLIPPEL support might require 
this data in case of problems. 

1.4.3

 

Limit Parameters 

In  the  ENLARGEMENT  MODE,  the  excitation  voltage  is  incrementally  increased  until  the  first  limit 
parameter is reached or exceeded. Following limit parameters are available: 

1.

 

X  target

  -

  Maximum  absolute  peak  voice  coil  excursion  that  shall  be  used  in  the  target 

application. If a laser is used, the peak displacement value is measured by a laser sensor. If 
no laser is used, it is calculated by a linear speaker model and a Bl(X=0) import which e.g. can 

Property page of KCS-ID module 

Summary of Contents for KCS-ID

Page 1: ...R D SYSTEM USER S GUIDE KCS ID Manual K l i p p e l G m b H July 23 2021 Copyright 2000 2021 Klippel GmbH Mendelssohnallee 30 01309 Dresden Germany www klippel de...

Page 2: ......

Page 3: ...urements 3 1 4 1 Basic Measurement Setup 3 1 4 2 Additional Options 4 1 4 3 Limit Parameters 4 1 4 4 Running and Interpreting Measurements 5 1 5 Creating Initial Data 7 1 6 Xmax and Xtarget 7 1 6 1 Wh...

Page 4: ......

Page 5: ...is initial data set is stored in a KCS Monitor operation and can be downloaded from the server The KCS Monitor operation can connect to any supported KCS hardware platform and a KCS control session ca...

Page 6: ...prises all relevant information required by KCS ID Make sure that IEPE phantom power is switched on using the buttons next to the microphone input on the KA3 s front panel If a transducer with multipl...

Page 7: ...like used in the KCS on line mode 2 Select Limit Parameters It is recommended to never switch off the Impulsive Distortion limit which indicates excessive impulsive distortion Rub Buzz If the target...

Page 8: ...have access to the transducer s membrane and cannot be used Note that a microphone calibration is not required for this measurement Advanced Save Intermediate Results saves the results of each measure...

Page 9: ...change the default impulsive distortion limits Note The IDR is very susceptible for impulsive distortion e g voice coil rubbing and not so much for air flow noises which exhibit less impulsive charact...

Page 10: ...t has successfully finished the measurement status overview in the State table displays a PASS after all measurement modes and an 8 character identification number Initial KCS data can now be created...

Page 11: ...tor KCS3 Before evaluating KCS it is highly recommended to see Tutorial 4 Alignment Equalization and 5 Protection Limiter of KCS3 which describe steps how to achieve best audio performance Note The ha...

Page 12: ...which can cause an asymmetric peak excursion This means that for instance the positive peak displacement is higher than the absolute peak value on the negative side see curves below If the voice coil...

Page 13: ...multiple voice coils each driven by a separate amplifier channel Note KCS only supports multi coil configurations if all coils show identical small and large signal properties Please contact Klippel...

Page 14: ...INEAR MODE either the voice coil was shifted significantly due to very asymmetric nonlinear behavior of the transducer or the distance between laser sensor and transducer membrane position has changed...

Page 15: ...using a DC voltage Stabilization is not possible Note that KCS will work anyway but higher safety margins for the maximum allowed excursion are required leading to less acoustical output at low freque...

Page 16: ...educed The gain of the specified target amplifier is not sufficient to drive the speaker to the Xmax determined in the KCS ID Xmax was reduced Error Messages High Linear Identification error High Nonl...

Page 17: ...Setup Routing 2 How to achieve a higher Xmax 8 I Info Warning Messages 10 Introduction 1 K KCS Server messages 10 KCS ID Manual 1 KCS ID messages 10 L Limit Parameters 4 P Performing Measurements 3 R...

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