Hi,
I have been using GRC and N210 to test my data acquisition scheme. My
previous scheme worked well with probably standard sampling rate
(10Msps)
and LO at DC.
When I switched to a non-standard sampling rate (1.2 Msps) and
non-standard
LO (1.105 MHz), all hell seems to break loose.
One message appears to be helpful, says: "Hardware does not support
requested sampling rate, request 1.200… Msps, actual 1.2048. Msps.
I suspect my requested LO of 1.105 MHz also may not be met, but there is
no
message saying that.
My question is: how do my find out the LFRX supported sampling rate and
LO
frequency?
Thanks,
LD
On 07/29/2013 02:47 PM, LD Zhang wrote:
One message appears to be helpful, says: "Hardware does not support
LD
The daughtercards don’t know anything about sample rate.
The available sample rates are determined by the motherboard hardware.
In the case of the N210, the selected sample rate must be
a proper integer fraction of the fixed ADC sample rate, which is
100Msps.
Thanks.
Does the LO frequency also have to integer fraction of 100 MHz?
From: discuss-gnuradio-bounces+ldz10565=removed_email_address@domain.invalid
[mailto:discuss-gnuradio-bounces+ldz10565=removed_email_address@domain.invalid] On Behalf
Of
Marcus D. Leech
Sent: Monday, July 29, 2013 11:52 AM
To: [email protected]
Subject: Re: [Discuss-gnuradio] Acceptable sampling rate and LO
frequency
for USRP LFRX
On 07/29/2013 02:47 PM, LD Zhang wrote:
Hi,
I have been using GRC and N210 to test my data acquisition scheme. My
previous scheme worked well with probably standard sampling rate
(10Msps)
and LO at DC.
When I switched to a non-standard sampling rate (1.2 Msps) and
non-standard
LO (1.105 MHz), all hell seems to break loose.
One message appears to be helpful, says: "Hardware does not support
requested sampling rate, request 1.200… Msps, actual 1.2048. Msps.
I suspect my requested LO of 1.105 MHz also may not be met, but there is
no
message saying that.
My question is: how do my find out the LFRX supported sampling rate and
LO
frequency?
Thanks,
LD
The daughtercards don’t know anything about sample rate.
The available sample rates are determined by the motherboard hardware.
In
the case of the N210, the selected sample rate must be
a proper integer fraction of the fixed ADC sample rate, which is
100Msps.