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SynthUSBII Signal Genertor

34.4MHz to 4.4GHz software tunable RF signal generator

Use this device as a generic RF signal generator in your test setup, or use it as a high quality local oscillator in your RF / microwave communication system.
Shown below, the software is eloquently engineered giving professional performance at fractions the cost of a bench top generator.
You may enter data either with the touch pad, knob, directly with the PC keyboard, and also by clicking on arrows next to the controls.

RF single frequency generation tab.

swgen

RF sweep generation tab. (Step as fast a 300uS per point. Resolution as low as 1KHz per step.)

swsweep

RF Pulse Amplitude Modulation tab. (Minimum pulse size and resolution is 1mS. Please see SynthNV for higher performance.)

swmod

PLL Control tab. (Control some finer details of the ADF4351 chip to get higher accuracy or quality for a particular frequency.)

swreg

Extras tab. (Check SynthUSBII firmware version, save to SynthUSBII internal EEPROM memory Frequency, Power, Modulation and Sweep setup for standalone operation. Also poll every second for phase lock.)

swextra

RF power is controlled by two bits in the PLL chip. There is a total of 10dB of output power adjustment in 4 total steps. Please check out the SynthNV for more power and 1/2dB steps.

The software is easy to install and use. It can control multiple devices based on programmed serial numbers, tune a RF CW frequency, run a RF sweep, Pulse Modulate, save many settings to EEPROM, and fine tune the PLL registers for experienced users. Control is very similar to a bench top signal generator. It is also touch panel friendly.

This software was written in Labview and the open source code is included so that you can modify and enhance any way you see fit for your own use. Please do not distribute. If you don’t own Labview, you will also get an executable that will install standalone and run on a PC. If you want to write your own software, it is best to get Labview and reverse engineer the Windfreak Labview source code. Labview is available with a free 1 month trial from National Instruments. All source code is sent on CD “saved as” using the latest version of Labview Basic. The device is easy to talk to via 1 simple command character followed program data. For example, setting frequency is done by sending “f1000.0” (without the quotes).