[time-nuts] another Ebay mixup, 5370

[SAIDJACK at aol.com]

In a message dated 6/14/2007 11:34:04 Pacific Daylight Time,  
henk at deriesp.demon.nl writes:

>If  realy a fet probe is needed, than use a lowpass filter with enough   
>bandwidth after the probe. Most of the time the majority of the   
>jitter is still seen and the large noise bandwidth of the probe  is  
>attenuated.

>Henk



Hi Henk,
 
that's a good data point! I have the HP differential probe and will try it  
as well.

BTW: I really like the 54701A probes for Spectrum Analyzer work, they  are 
pretty flat all the way out to above 3GHz, and virtually  indestructable.
 
If you use the special HP Spectrum Analyzer probe itself (822xx part number  
or similar I think) then you have to be extremely carefull not to touch 5V  or 
12V etc on your PCB, otherwise the probe will blow and it's over $1000 to  
repair I hear. Friends tell me that's why never to buy those on Ebay: they are  
likely all blown out.
 
bye,
Said



************************************** See what's free at http://www.aol.com.