[time-nuts] 3GHZ Extender for HP 53131A and 53132A
GandalfG8 at aol.com
GandalfG8 at aol.com
Fri Nov 8 20:20:58 EST 2013
Hi Rick
As far as I'm aware this is pretty much a copy of the HP original which
used a Fujitsu, or similar, MB510-PF prescaler, so a sort of "what you see is
what you get" situation:-)
Regards
Nigel
GM8PZR
In a message dated 09/11/2013 00:03:58 GMT Standard Time,
richard at karlquist.com writes:
On 2013-11-08 15:49, GandalfG8 at aol.com wrote:
>
> At 1000 MHz, the highest frequency I can generate right now, I've
> measured
> the channel 3 input sensitivity as -50dBm with a sinusoidal signal.
>
> Regards
>
> Nigel
> GM8PZR
>
This high sensitivity is probably a bad thing, not a good thing.
It is indicative of a dynamic divider. For a frequency counter
prescaler, you want a static divider, such as the HP5386 used.
Dynamic dividers make errors if the signal being measured
has a broadband noise floor or sufficiently high spurs at any
frequency.
Rick Karlquist N6RK
_______________________________________________
time-nuts mailing list -- time-nuts at febo.com
To unsubscribe, go to
https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
More information about the time-nuts
mailing list