Hello PXI-Peter,
The PXI-5404 is a Frequency Synthesizer that generates only sine waves and square waves (through the CLOCK output). It uses DDS mode, so it uses a look-up table to generate signals.
The specifications of the internal clock of the PXI-5404 board are:
* Frequency: 9kHz to 105MHz
* Resolution: 1.07uHz
* Accuracy: +/-2ppm (this is, max +/- deviation from selected frequency is selected freq x (2/1000000)
You can see this information in the following document:
Specifications for the NI PXI-5404 - January 2003Hope this helps,
Claudia Lorente
Applications Engineer
National Instruments
http://www.ni.com/ask