Board Layout
The board dimensions are 4000 mils by 4000 mils. It is constructed by 4-layer sandwiched RO4003/FR4/RO4003 with a total thickness of 54 mil. The height of the board is nominally 0.7 inches with a heatsink attached to the DDS or 0.6 inches without the heatsink attached. The RF I/O’s are standard SMA connectors and the USB port is a type-B USB receptacle. The four mountholes are located at (125,125),(3875,125),(3875,3875), and (125,3875) in mils.
DDSOP / DDSON (SMA)
SMA connectors for output waveforms. The DDSOP connector should be connected to the oscilloscope since it can detect phase while the DDSON connector should be connected to the spectrum analyzer.
DDSCK (SMA)
SMA connector for input clock. Please connect to a clock source with minimum power of 3 dBm.
Power Jack
The lower right corner of the board there is a receptacle for the 12V switching power supply.
TRIG (SMA)
SMA connector for Trigger signal input. Inputs a trigger signal to the DSM board.
MARKER (SMA)
SMA connector for Marker signal output. A marker can be output everytime a waveform is output.
ROM Jumper
For Generic Installation of firmware, you will need to remove this jumper before powering up the DSM board. Just before flashing the ROM, you will need to place the jumper back.