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santhapurharsha
Visitor
Visitor

‎09-23-2011 02:51 AM

2,977 Views
Registered: ‎07-28-2011

system Generator, FIR Compiler 5

Hi,

 

i am using 12.4 ISE.

 

I have a problem with FIR compiler 5.0 , in system generator.

 

When i give  a input  sinewave( amplitude of 1, 1 MHz input frequency, 20 MHz sampling frequency),

 

and whem i pass this signal through   a FIR, (Decimation with 5 times)  , i am observing a ouput of amplitude of some 3*10^5.

 

 

How come this much amplitude is obtained?

 

Is there any bug in the FIR.?

 

 

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ywu
Xilinx Employee
Xilinx Employee

‎09-23-2011 03:33 AM

2,974 Views
Registered: ‎11-28-2007

What are the coefficient values?

 

@santhapurharsha wrote:

Hi,

 

i am using 12.4 ISE.

 

I have a problem with FIR compiler 5.0 , in system generator.

 

When i give  a input  sinewave( amplitude of 1, 1 MHz input frequency, 20 MHz sampling frequency),

 

and whem i pass this signal through   a FIR, (Decimation with 5 times)  , i am observing a ouput of amplitude of some 3*10^5.

 

 

How come this much amplitude is obtained?

 

Is there any bug in the FIR.?

 

 



Cheers,
Jim
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