ADRV9002 gain control mode and interface gain not working from MATLAB

Interface gain control is only available in narrowband configurations, basically anything slower than 1 MHz. You will need to load a slower profile.

-Travis

Thank you!

How can I change the total gain on the RX path in case of Wideband?

Regards

Arash 

Use the Attenuation controls to manually adjust the position in the gain tables.

-Travis

Dear Travis,

Thank you for your response! 

1- However I set the channels to dual in .json file, I could not select second TX2 or RX2 channels as my transmitter and receiver, by setting the enablechannels parameter to 2!!! It receive and transmit always signal from channel 1!!!

2- There is only one attenuation parameter for the RX channels however there are two RX channels available. The AttenuationChannel1 does not exist as a parameter in my MATLAB RX object!!!

From github io, no range has been defined for the attenuation!!

3- I checked the user guide, the gain index that refers to total gain on the RX path can be from 187(d) to 255(d), what is the equivalent total analog and digital gain?

From my understanding 20log(1/256)= -48.16 dB is the difference with internal attenuator and frontend attenuation which is 0 so the internal attenuation could be either 48.16 dB or -48.16???!!! In TES SW when I set the decimal gain to 187 the total analog and digital gain is the lowest possible! and when I choose 255, I got the highest possible total gain! how should I use these values in MATLAB?

4- I measured the output signal level of a CW signal with different configuration of the TX attenuation, it seems till 36 dB, it works fine. From 36.2 dB till 41 dB the attenuation became somthing between 0 to 2 dB!!! very strange! 

Regards

Arash

1. This is just a small bug in the property hiding of the object. However it doesn't prevent you from using the property it just doesn't list it if [1,2] is not in EnabledChannels. If you want to see it put [1,2] in EnabledChannels.

2. See 1

3. MATLAB API is a direct API to the driver: https://wiki.analog.com/resources/tools-software/linux-drivers/iio-transceiver/adrv9002 0 is minimum gain, 34 is max.

4. I cannot repeat this. Gain is consistent over the entire range on my system using the default gain table and LVDS profile.

-Travis

1. This is just a small bug in the property hiding of the object. However it doesn't prevent you from using the property it just doesn't list it if [1,2] is not in EnabledChannels. If you want to see it put [1,2] in EnabledChannels.

2. See 1

3. MATLAB API is a direct API to the driver: https://wiki.analog.com/resources/tools-software/linux-drivers/iio-transceiver/adrv9002 0 is minimum gain, 34 is max.

4. I cannot repeat this. Gain is consistent over the entire range on my system using the default gain table and LVDS profile.

-Travis

Hello Travis,

Thank you for the reply.

travisfcollins said:

This is just a small bug in the property hiding of the object. However it doesn't prevent you from using the property it just doesn't list it if [1,2] is not in EnabledChannels. If you want to see it put [1,2] in EnabledChannels.

When I set the rx.EnabledChannels = [1,2] , yes, the attenuation parameter shows up in the RX object! but I got the following error:

As I set the rx.EnabledChannels = [2], I still receive nothing on the RX2 channel.

travisfcollins said:

I cannot repeat this. Gain is consistent over the entire range on my system using the default gain table and LVDS profile.

Since I'm using ZC706, I'm limited to CMOS profile, so this was the result of CMOS profile!

Another issue I do have is when I set the rx.DigitalGainControlModeChannel0='automatic'; and rx.AGCTrackingChannel0 = true;, the AGC does not correct the gain variations while changing the input power level at RX1 channel.


Regards

Arash

Hello Travis,

Please confirm that EK-U1-ZCU102-G-ED is the correct carrier board that ADRV9002 can be utilized for full verification and testing, here is the link:

https://www.digikey.com/en/products/detail/EK-U1-ZCU102-G-ED/122-EK-U1-ZCU102-G-ED-ND/12715742?curr=usd&utm_campaign=buynow&utm_medium=aggregator&utm_source=octopart

The ED (Encryption disabled) causes no issue for the whole IP core generation and cutomize DSP blocks??

Thank you.

Regards

Arash

ADI does not provide encrypted IPs as part of the prototyping package. As least for the open code ADI provides it makes no difference or have these features on the board.

-Travis

Hello Travis,

Thank you for the reply.

My own created IP cores are also not encrypted, in case I buy the IP cores from a 3rd party also the source code and netlist are not encrypted.

I can't understand where the limitations are then.

Regards

Arash

If you want to understand the difference between the ED and non-ED boards I would contact Xilinx as it is their board.

-Travis

Dear travisfcollins 

Arashjafari said:

When I set the rx.EnabledChannels = [1,2] , yes, the attenuation parameter shows up in the RX object! but I got the following error:

As I set the rx.EnabledChannels = [2], I still receive nothing on the RX2 channel.

I would appreciate it if you could guide me on receiving a signal from axi-adrv90002-rx2-lpc?

Thank you

Regards