Bilal Amin wrote: > Hi Everyone, > > Some days back I emailed on the group regarding the jitter in the sampling > clock of ADC. I have tried the phase modulation method for producing the > jitter. > I used the HP 8648B Signal generator for this experiment. I modulated the RF > wave (at 10 MHz) with noise using the modulating input of the Signal > Generator. For noise I used a Noise gen. from General Radio Company. It has > three options for frequency. 10K, 100K and 5 M Hz. > I observed the output using an oscilloscope. The output wave form was > jittery. BUT when changed the noise from 5M to 100K there was an increase in > jitter. Can any one help me out there, why this is happening? According to > my understanding decreasing the bandwidth of noise results in decrease in > jitter as well. > Also I want to calculate the jitter at the output. i.e. the amount of noise I > am adding. I think I wont be able to do it over the oscilloscope. Any ideas ? > > Regards > > Bilal > _______________________________________________ > time-nuts mailing list > [email protected] > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > > Bilal
The 8648B phase modulation input has a bandwidth of 10Hz to about 10kHz. The resultant phase modulation dependency on the noise generator settings depends on the noise generator specifications. What was the noise generator model, or can you provide a circuit diagram so the effect of the noise generator settings can be deduced? Bruce _______________________________________________ time-nuts mailing list [email protected] https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
