[time-nuts] Newbie questions

[Bob Camp]

Hi

The 5335 is a pretty nice counter, you can use the math functions to get just about anything you want displayed. One simple example is to just subtract 10 MHz from the count and display the difference. 

The problem you run into is overflow in the counter chip. Somewhere around 100 seconds you run out of storage with a 10 MHz input. 

It's been *years* since I ran one, I could be off on the 100 seconds ....

Most of the ones you see for sale have at at least one input channel blown out.. They are easy to fry and the front end chips aren't anything you can get off the shelf. 

Bob


On Jan 6, 2010, at 2:55 AM, Hal Murray wrote:

> 
> zygo at dakotacom.net said:
>> 4.  Does anyone know a way to force the 5335A counter to display
>> another decimal place in frequency measurements?  I am getting to
>> 0.001 Hz by using the "mean of 100 counts" function on the counter,
>> but I think the counter has at least one more digit available which I
>> would like to use when accuracy justifies it (e.g. when using the
>> TBolt as an external time source). 
> 
> I've never used a 5335 but I have a 5334.
> 
> How many digits are there on the display?  How many of them are you getting?
> 
> With the 5334, you can get a few more digits by running for 100 seconds but 
> you can only see them via GPIB.
> 
> In case you haven't noticed, many people on this list are happy with the 
> Prologix GPIB/USB gadget.
> 
> 
> -- 
> These are my opinions, not necessarily my employer's.  I hate spam.
> 
> 
> 
> 
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