Re: [time-nuts] Producing jitter with Phase Modulation

Pete, Thanks for your valuable information. You have explained exactly what is happening and I have got it finally. I have a digi. oscilloscope with a jitter measurement option, but it is only for square waveforms. Unfortunately the Sig. Gen. I am using has no option for square wave. I think I

Re: [time-nuts] Producing jitter with Phase Modulation

- Original Message - From: "Dr Bruce Griffiths" <[EMAIL PROTECTED]> To: "Discussion of precise time and frequency measurement" Sent: Monday, March 19, 2007 9:25 PM Subject: Re: [time-nuts] Producing jitter with Phase Modulation Bilal Amin wrote: Hi E

[time-nuts] Producing jitter with Phase Modulation

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 modulatin

Re: [time-nuts] External clock for Analog to Digital Converter inGPS Rx front-end

ternal clock for Analog to Digital Converter inGPS Rx front-end > Bilal Amin wrote: >>> Hi John and Bruce, >>> >>> Thank you for your ideas. Now I have a much better picture for the >>> experiment using the comparator. Now, my only concern is a noise >>&

Re: [time-nuts] External clock for Analog to Digital Converter inGPS Rx front-end

Hi John and Bruce, Thank you for your ideas. Now I have a much better picture for the experiment using the comparator. Now, my only concern is a noise generator. I have searched and found out that all the commercially available now generators are very expensive and some what out of my price ran

Re: [time-nuts] External clock for Analog to Digital Converter inGPS Rx front-end

Yes, I am looking for a phase jitter. In other words I need my sampling instants to vary randomly at each sampling interval. Bilal - Original Message - From: "John Miles" <[EMAIL PROTECTED]> To: "Discussion of precise time and frequency measurement" Sent: Saturday, March 03, 2007 10:25

Re: [time-nuts] Suspected Spam: External clock for Analog toDigital Converter in GPSRx front-end Rx front-end

Hi John, Thank you for your email. I am also looking at the PM method to solve my problem. I have a HP signal generator and I can use it to generate an RF signal and then modulate it with noise from the modulating input of the signal generator. I need some suggestion regarding the noise generat

Re: [time-nuts] Suspected Spam: External clock for Analog toDigital Converter in GPSRx front-end Rx front-end

hese add a pseudo-random jitter to the clock signal so the interference > from the equipment is slightly spread causing the equipment to pass EMC > testing by causing an apparent reduction in the peak due to the > bandwidth of the test receiver. > > Robert. > > -Original Messag

Re: [time-nuts] External clock for Analog to Digital Converter in GPS Rx front-end

- Original Message - From: "Dr Bruce Griffiths" <[EMAIL PROTECTED]> To: "Discussion of precise time and frequency measurement" Sent: Friday, March 02, 2007 6:10 PM Subject: Re: [time-nuts] External clock for Analog to Digital Converter in GPS Rx front-end

[time-nuts] External clock for Analog to Digital Converter in GPS Rx front-end

Hi Everyone, I am working on Jitter in Analog to Digital Converters(ADCs) for GPS receiver front-end. I am trying to setup an experiment to see the effects of jitter in real time ADCs. I have an ADC evaluation board with external clock input for sampling (i.e Sampling clock). Now I want to prod