On 09/23/2013 11:07 PM, bob wole wrote:
Can somebody please guide me on this ?
On Fri, Sep 20, 2013 at 4:44 PM, bob wole [email protected] wrote:
I have USRPN210 with WBX and RFX2400. Is there any AGC chip on N210
motherboard or WBX, RFX2400 before ADC to utilize the dynamic range of ADC
? if yes, which one? If not, then won’t the varying input signal (for
example signal from moving object) to ADC affect the performance of ADC ?
The ADC on an N210 has over 80dB of dynamic range. If that >>isn’t
enough, then your application can adjust the RF gain to taste.
Only a subset of applications actually benefit from the usual >>hardware
AGC schemes, and such schemes are invariably >>application-specific, so
no automatic gain control. But your application can >>dynamically
make gain adjustments as it goes.
Hi Marcus thanks for response, If there is no automatic gain control
how does it is ensured that ADC doesn’t saturate ? I mean what if there
a signal whose amplitude is greater that ADC’s highest input level ?
it saturate the ADC ? Also what if the signal is too weak to span much
the ADC input voltage, then again we are not using all bits effectively.