On 2022-02-10 07:39, Tobias Kronauer wrote:
Dear all,
recently, we purchased a X410. According to the
[manual](https://www.ni.com/pdf/manuals/378493a), the USRP supports a
maximum I/Q samples rate of up to 491.52 MSps. Using the UHD API
however, warnings are printed to stdout that the rate is set to 245.76
MSps.
Also:
https://files.ettus.com/manual/page_usrp_x4xx.html#x4xx_updating_fpga_types
In the following, you can find a MWE:
```cpp
#include <uhd/usrp/multi_usrp.hpp>
#include <iostream>
int main() {
uhd::device_addr_t addr = uhd::device_addr_t("addr=localhost");
uhd::usrp::multi_usrp::sptr usrp = uhd::usrp::multi_usrp::make(addr);
usrp->set_rx_rate(491.52e6); // max. value deifned in
https://www.ni.com/pdf/manuals/378493a
usrp->set_tx_rate(491.52e6); // max. value deifned in
https://www.ni.com/pdf/manuals/378493a
std::cout << "Rx rates range from " <<
usrp->get_rx_rates().start() << " to " <<
usrp->get_rx_rates().stop()<< std::endl;
std::cout << "Tx rates range from " <<
usrp->get_tx_rates().start() << " to " <<
usrp->get_tx_rates().stop()<< std::endl;
std::cout << "Current rate is (rx): " << usrp->get_rx_rate() <<
std::endl;
std::cout << "Current rate is (tx): " << usrp->get_tx_rate() <<
std::endl;
}
```
After building, the following is printed:
```bash
root@ni-x4xx-323F74C:~/uhd-evaluation/debug/build# ./set_usrp_rates
[INFO] [UHD] linux; GNU C++ version 9.2.0; Boost_107100;
UHD_4.1.0.5-0-g18f5f9a4
[INFO] [MPMD] Initializing 1 device(s) in parallel with args:
mgmt_addr=127.0.0.1,type=x4xx,product=x410,serial=323F74C,fpga=X4_200,claimed=False,addr=localhost
[INFO] [MPM.PeriphManager] init() called with device args
`fpga=X4_200,mgmt_addr=127.0.0.1,product=x410,clock_source=internal,time_source=internal'.
[WARNING] [MPM.RPCServer] A timeout event occured!
[INFO] [MPM.PeriphManager] init() called with device args
`fpga=X4_200,mgmt_addr=127.0.0.1,product=x410,clock_source=internal,time_source=internal'.
[WARNING] [MULTI_USRP] Could not set RX rate to 491.520 MHz. Actual
rate is 245.760 MHz
[WARNING] [MULTI_USRP] Could not set RX rate to 491.520 MHz. Actual
rate is 245.760 MHz
[WARNING] [MULTI_USRP] Could not set RX rate to 491.520 MHz. Actual
rate is 245.760 MHz
[WARNING] [MULTI_USRP] Could not set RX rate to 491.520 MHz. Actual
rate is 245.760 MHz
[WARNING] [MULTI_USRP] Could not set TX rate to 491.520 MHz. Actual
rate is 245.760 MHz
[WARNING] [MULTI_USRP] Could not set TX rate to 491.520 MHz. Actual
rate is 245.760 MHz
[WARNING] [MULTI_USRP] Could not set TX rate to 491.520 MHz. Actual
rate is 245.760 MHz
[WARNING] [MULTI_USRP] Could not set TX rate to 491.520 MHz. Actual
rate is 245.760 MHz
Rx rates range from 240941 to 2.4576e+08
Tx rates range from 240941 to 2.4576e+08
Current rate is (rx): 2.4576e+08
Current rate is (tx): 2.4576e+08
```
The same can be observed using the `txrx_loopback_to_file` example.
Can you help me on that? Thank you in advance 🙂
**Version information**:
```bash
root@ni-x4xx-323F74C:/usr/lib/uhd/examples# uhd_config_info --print-all
UHD 4.1.0.5-0-g18f5f9a4
Build date: Mon, 06 Dec 2021 19:14:55
C compiler: GNU 9.2.0
C++ compiler: GNU 9.2.0
C flags: -DBOOST_ERROR_CODE_HEADER_ONLY
-DBOOST_ASIO_DISABLE_STD_STRING_VIEW
-DBOOST_ASIO_DISABLE_STD_EXPERIMENTAL_STRING_VIEW -DHAVE_CONFIG_H
-DUHD_LOG_MIN_LEVEL=1 -DUHD_LOG_CONSOLE_LEVEL=2 -DUHD_LOG_FILE_LEVEL=2
-DUHD_LOG_CONSOLE_COLOR
--sysroot=/__w/790/build/tmp-glibc/work/aarch64-oe-linux/uhd/4.1.0.5+rc2-r0/recipe-sysroot
-O2 -pipe -g -feliminate-unused-debug-types
-fmacro-prefix-map=/__w/790/build/tmp-glibc/work/aarch64-oe-linux/uhd/4.1.0.5+rc2-r0=/usr/src/debug/uhd/4.1.0.5+rc2-r0
-fdebug-prefix-map=/__w/790/build/tmp-glibc/work/aarch64-oe-linux/uhd/4.1.0.5+rc2-r0=/usr/src/debug/uhd/4.1.0.5+rc2-r0
-fdebug-prefix-map=/__w/790/build/tmp-glibc/work/aarch64-oe-linux/uhd/4.1.0.5+rc2-r0/recipe-sysroot=
-fdebug-prefix-map=/__w/790/build/tmp-glibc/work/aarch64-oe-linux/uhd/4.1.0.5+rc2-r0/recipe-sysroot-native=
--sysroot=/__w/790/build/tmp-glibc/work/aarch64-oe-linux/uhd/4.1.0.5+rc2-r0/recipe-sysroot
C++ flags: -DBOOST_ERROR_CODE_HEADER_ONLY
-DBOOST_ASIO_DISABLE_STD_STRING_VIEW
-DBOOST_ASIO_DISABLE_STD_EXPERIMENTAL_STRING_VIEW -DHAVE_CONFIG_H
-DUHD_LOG_MIN_LEVEL=1 -DUHD_LOG_CONSOLE_LEVEL=2 -DUHD_LOG_FILE_LEVEL=2
-DUHD_LOG_CONSOLE_COLOR
--sysroot=/__w/790/build/tmp-glibc/work/aarch64-oe-linux/uhd/4.1.0.5+rc2-r0/recipe-sysroot
-O2 -pipe -g -feliminate-unused-debug-types
-fmacro-prefix-map=/__w/790/build/tmp-glibc/work/aarch64-oe-linux/uhd/4.1.0.5+rc2-r0=/usr/src/debug/uhd/4.1.0.5+rc2-r0
-fdebug-prefix-map=/__w/790/build/tmp-glibc/work/aarch64-oe-linux/uhd/4.1.0.5+rc2-r0=/usr/src/debug/uhd/4.1.0.5+rc2-r0
-fdebug-prefix-map=/__w/790/build/tmp-glibc/work/aarch64-oe-linux/uhd/4.1.0.5+rc2-r0/recipe-sysroot=
-fdebug-prefix-map=/__w/790/build/tmp-glibc/work/aarch64-oe-linux/uhd/4.1.0.5+rc2-r0/recipe-sysroot-native=
-fvisibility-inlines-hidden
--sysroot=/__w/790/build/tmp-glibc/work/aarch64-oe-linux/uhd/4.1.0.5+rc2-r0/recipe-sysroot
-fvisibility=hidden -fvisibility-inlines-hidden
Enabled components: LibUHD, LibUHD - C API, LibUHD - Python API,
Examples, Utils, Tests, MPMD, N300, N320, E320, E300, X400, OctoClock
Install prefix: /usr
Boost version: 1.71
Libusb version: N/A
Library path: /usr/lib
Package path: /usr
Images directory: /usr/share/uhd/images
ABI version string: 4.1.0
```
Kind regards,
Tobias
*Barkhausen Institut*
www.barkhauseninstitut.org
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