AnsweredAssumed Answered

9910 independent ramps programming

Question asked by zinab on Jan 5, 2015
Latest reply on Jan 8, 2015 by zinab

Hello,

We are trying with the "Evaluation Board AD9910" with your software to make different types of frequency ramps.

For the ramp up everything works fine, but when we use the ramp down there is a problem.

The problem accurse when we use the "Ramp Down" for a bigger step then the previous "Ramp Up"

 

Example:

1st ramp: from 10 MHz to 30 MHz            works ok

2nd ramp: from 30 MHz to 20 MHz            works ok

3 ramp: from 20 MHz to 40 MHz  works ok

4 ramp: from 40 MHz to 10 MHz  error jumps immediately to 10 MHz


Our work parameters

Slop Rate=1uSec=250

Input Fewquency=10MHz

Multiplier=100

Sample Rate = 1GHz

Ramp time = 2-3 sec

 

We need to be able to make different types of ramps with different gaps of frequencies independent from the previous ramp:

Load registers values, 1 ramp.

Load new registers values, 1 ramp etc

 

Thank you

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