I recently purchased a Fluke 6070A RF Signal Generator on eBay. While I was playing with it I noticed that the Spin Knob has 18 magnetic detents per full revolution resulting in 18 counts per compleat revolution instead of the 25 counts per revolution that both the user manual and datasheet say it should have. Also the Instruments default setting when turned from the cold is:- Freq. = 300 MHz and Amplitude = -10 dBm. (This instrument does not have the Non-Volatile Memory option fitted i.e. -570 ) where as the standard power-on setup listed on page 5E-2 of the Operator Manual states that the Frequency ddisplayed should be 250 MHz and Amplitude
-60dBm. I also have my suspicion with regard to the FM deviation limits but that's a bit more complicated to check as there is an interaction with the Modulating frequency and Output frequency. The guy I bought it from says he has a number of these all the same. So what have I actually got ? I can find no reference to it on the internet Were there a couple of different versions or did they do custum versions for some customers. ? Apart from this the instrument works as expected.