DDS

We have two types of DDS (Direct Digital Synthesis) with USB port or Serial port.

Use the right software for programming!

Default values:

For generate a fix output frequency you can use two reference possibilities:

“Internal Clock Frequency: 400 MHz”

“External Clock Frequency: 100 MHz”. Input power should be 10 dBm < P < 20 dBm.

The output frequency can be only less than the reference frequency!

When using divider setup with any input and output frequency, the input power should be:

f_in < 150 MHz ⇒ 10 dBm < P < 20 dBm

f_in > 150 MHz ⇒ P ~ 0 dBm

Devided by 2 isn't possible! (said Andreas from PTB)

USB-DDS

Software DDS for USB Type PTB DDS

Datasheet/Manual:

Modifikation to frequency divider

Datasheet/Manual: Anleitung zum Teilerumbau

Serial-DDS

Software Terminal for Serial Type DDS

Datasheet/Manual: