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Pulse Generator 3402 frequency limitation

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paulojesus
Posts: 2
Joined: December 2nd, 2013, 5:57 am
Country: Switzerland

Pulse Generator 3402 frequency limitation

Post by paulojesus » December 2nd, 2013, 6:20 am

Hello,
The Pulse/Pattern Generator 3402 outputs an error when I try to set up a pulse frequency higher than 9.705MHz:
"Error frequency. Frequency of 10.00MHz is greater than the maximum period settin Max frequency setting is 9.705 MHz"
The instrument is set as follows:
.Mode - pulse
.Time - Channel=1
- Freq=9MHz
- Per=111.1ns
- Width=3.02ns
- Delay=0
- LeadE=2.5ns
- TrailE=2.5ns
- Double=off
- PerSrc=Pll
.Trigger - TrgSrc=ExtIn
- TrgMode=Cont
- TrgFreq=100kHz
- TrgPer=10.00ns
- TrgSlope=Pos
Utility - PllRef=Internal

How should I configure the instrument to have Clock frequency outputs up to 165MHz as specified?
Thanks in advanced.

Dale C
Keithley Applications
Keithley Applications
Posts: 2845
Joined: June 10th, 2010, 6:22 am
Country: United States
Contact:

Re: Pulse Generator 3402 frequency limitation

Post by Dale C » December 4th, 2013, 4:00 am

I think this may be a user interface issue. Try changing the period to 6.06ns instead of changing the pulse frequency. There may also be a dependency issue with Channel 2. I believe that the pulse frequency for channels 1 and 2 must be identical. Make sure that the pulse width for channel 2 is small enough to support a 165MHz frequency.

paulojesus
Posts: 2
Joined: December 2nd, 2013, 5:57 am
Country: Switzerland

Re: Pulse Generator 3402 frequency limitation

Post by paulojesus » December 4th, 2013, 5:05 am

Hi Dale,
Thanks for the reply. You were right, it was the width of the channel 2 that limited the frequency.
"Problem" resolved.
Best Regards,
Paulo

mandarp
Posts: 1
Joined: January 20th, 2016, 3:44 am
Country: India

Re: Pulse Generator 3402 Trigger out

Post by mandarp » January 20th, 2016, 3:52 am

is it possible to get a independent frequency output from trigger out and channel 1 out.?
Iam looking for generating 2 independent frequencies of 40 Mhz and 100 Hz both synchronised too.

Dale C
Keithley Applications
Keithley Applications
Posts: 2845
Joined: June 10th, 2010, 6:22 am
Country: United States
Contact:

Re: Pulse Generator 3402 frequency limitation

Post by Dale C » January 20th, 2016, 5:36 am

Since this product was from - and is obsolete from Keithley I would suggest to contact - for this question.
www.-.com

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