I bought a "LTDZ MAX2870 23.5-6000Mhz signal source" (attached image), which is available from all the major online platforms. However it didn't come with any instruction.
There are 5 tact switches on the PCB, covering the following functions: <, >, ^, v, and OK. I can change the frequency thru these switches, but for the life of me, I can't figure out how to manually change the amplitude. In the attached photo, the amplitude is displayed on the bottom row of the display.
There is a frequency sweep function, but I can't figure how to start the sweep.
According to the advertisement, the item can be PC controlled, but no software is provided. When I tried to connect with the MAX287X PLL EV Kit Software, it couldn't detect the signal source (error message in attached image below).
Thanks.
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