We are using an Agilent E8257D Signal Generator for an AM modulated signal. Our in-house software functions will only allow us to program the E8257D AM depth in dB/volt format but our UUT test specifications require AM depth in percent/volt. I can't seem to find a mathmatical relationship between the percent and dB AM depth settings for this instrument. I thought that it would be something like dB = 20*log(1-M/100), where M = degree of modulation in %. After experimenting with the instrument output in both formats, I cannot find a conversion formula that produces the same modulated signal in both formats.
Any help would be appreciated.
TH
Any help would be appreciated.
TH