[time-nuts] PRS-10 PPS output

[Bob kb8tq]

Hi

At least according to page 20 in:

https://www.thinksrs.com/downloads/pdfs/manuals/PRS10m.pdf

the “raw” PPS output from the PRS-10 is just a CMOS gate output. 
There is nothing suggesting it is designed to drive a 50 ohm load 
or a coax cable. 

Page 59 suggests that the “boardlet” does nothing but pass the 
signal to the connector on the board. 

Best guess: It’s doing what it’s supposed to, but not quite what 
you expected it to do.

Bob

> On Apr 3, 2020, at 8:35 AM, Mike Ingle <finndmike62 at gmail.com> wrote:
> 
> Hello fellow nuts,
> 
> I just received my PRS-10 with boardlet and heat sink, and I have a
> question regarding my PPS output signal.
> My output looks strange, (but usable).  I have attached a couple
> screen-shots of my scope/
> The first is with 50 ohm termination after 5foot of 5g-58 cable, the second
> is without termination.
> 
> --mike
> [image: pps_term.png]
> [image: pps_unterm.png]
> <pps_term.png><pps_unterm.png>_______________________________________________
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