[time-nuts] Buffering a PPS signal

[Bob Camp]

Hi

For a 50 ohm buffer, you probably want something like 200 ohms in series
with each output (4 buffers) or 400 ohms (8 buffers).

Bob

-----Original Message-----
From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
Behalf Of Azelio Boriani
Sent: Friday, May 18, 2012 7:55 AM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Buffering a PPS signal

Use the 74ABT2244: integrated resitors at the outputs.

On Fri, May 18, 2012 at 4:50 AM, Rex <rexa at sonic.net> wrote:

> In line with what Bob suggests, here is one of the square wave outputs of
> an HP Z3816A...
>
>
http://www.xertech.net/**Projects/Z3816/Output_circ.gif<http://www.xertech.n
et/Projects/Z3816/Output_circ.gif>
>
> Or look at the project for context...
>
>
http://www.xertech.net/**Projects/Z3816/3816_mod.html<http://www.xertech.net
/Projects/Z3816/3816_mod.html>
>
>
>
>
> On 5/17/2012 6:17 PM, Bob Camp wrote:
>
>> Hi
>>
>> Parallel up as many inverters (or logic buffers) as you feel you need.
>> Much less delay than the MOSFET drivers. Small packages for easy layout.
>> Run off of 5 volts (or what ever.). Put a resistor in series with the
>> output of each of them and they will equalize very well.
>>
>> Bob
>>
>> On May 17, 2012, at 7:35 PM, Michael Tharp wrote:
>>
>>
>
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