# Performance Measurements

## Phase Noise Profiles and Spectrum Graphs

### Reference Clock

#### Test Conditions

The Ref Clock is configured with an internal 10 MHz reference. A 50R cable was used to connect Cyan to a Rhode and Swartz FSW Signal and Spectrum Analyzer where we captured the results.

### Device Clock

#### Test Conditions

The Dev Clock used for converters, operates at 250MHz (Configured with internal 10MHz reference). A 50R cable was used to connect Cyan to a Rhode and Swartz FSW Signal and Spectrum Analyzer where we captured the results.

### Tx Waveform Performance Measurements

##### Note on Phase Noise

Note

PHASE NOISE MEASUREMENTS: The following phase noise measurements were taken using the default 10MHz PDF, which provides for a default RF frequency tuning step size of 10MHz. This decision was made to support the widest possible use cases from our customers. However, these measurements do not reflect the best possible performance of our product; for phase noise sensitive applications, the phase noise profile can be improved by over 12dB. Please contact us for more information.

In this section, you will find the command to create the Normalized dBm Spectrum (SNR) plot shown, and a .pdf file of all phase noise and dynamic range measurements.

#### Test conditions

Measurements were taken using a Rhode and Swartz FSW Signal and Spectrum Analyzer. The RF port of the phase noise analyzer was connected to the Tx A port. Waveforms were generated using tx_waveforms, an example program that is included with libUHD, and run with the specified command options required to obtain a 0dBm output measurement.

#### Tx Measurements at 50 MHz

##### Normalized dBm Spectrum Command

When setting the command options below, the wave-freq, ch-freq, dp-freq, and dsp-freq must add up to the frequency you wish to measure.

sudo ./tx_waveforms \
--rate 10000000 \
--ampl 0.99 \
--wave-type SINE \
--wave-freq 10000 \
--channels "0" \
--ch-freq 9990000
--dp-freq 39000000
--dsp-freq 1000000
##### Measurement Package

Cyan 50MHz Tx Measurements: this includes phase noise and spectrum measurements for the above configuration.

Note

Phase noise measurements are based on standard 10MHz PDF. See note on phase noise.

#### Tx Measurements at 500 MHz

##### Normalized dBm Spectrum Command

When setting the command options below, the wave-freq, ch-freq, dp-freq, and dsp-freq must add up to the frequency you wish to measure.

sudo ./tx_waveforms \
--rate 10000000 \
--ampl 0.99 \
--wave-type SINE \
--wave-freq 100000 \
--channels "0" \
--ch-freq 9900000
--dp-freq 489000000
--dsp-freq 1000000
##### Measurement Package

Cyan 500MHz Tx Measurements: this includes phase noise and spectrum measurements for the above configuration.

Note

Phase noise measurements are based on standard 10MHz PDF. See note on phase noise.

## Rx Performance Measurements

Note

Cyan Rx performance measurements will be updated momentarily.