The DDS1 features two output channels, which can provide sinusoidial signals from 100 kHz to 250 MHz with an amplitude around +2 dBm into 50 Ohm. It can be tied to a stable 10 MHz frequency reference.
The device operates in four modes, including single tone, amplitude modulation (AM), frequency modulation (FM), and phase modulation (PM). The four digital inputs allows fast switching based on an external modulation signal. The target application is control of acoustical optical modulators for switching laser frequencies and intensities.
The device is a modular unit to be powered by a Eurocard rack system (sold separately) and does not require a driver to operate, the host and device communicate only by a serial interface.
|Input standards||NIM or TTL signal standard|
|Connector||SMA coaxial connectors for 50Ohm impedence cables|
|Frequency range||0.1 to 250MHz|
|Mode||single tone, amplitude modulation (AM), frequency modulation (FM), or phase modulation (PM) with sweep mode available|
|Modulation level||16 levels max|
|FM tuning resolution||0.12Hz (32-bit)|
|PM tuning resolution||0.38mrad (14-bit)|
|External reference frequency||10MHz nominal converted to 50MHz to seed internal 500MHz PLL for use as direct clock|
|External reference amplitude||150mVpp min, 2.3Vpp max|
|Host connection||USB CDC ACM class / virtual com port (no device driver necessary)|
|Windows, Mac, Linux||Python scripts hosted at Github (MIT Licence)|