] On Behalf Of Perry Sandeen
via time-nuts
Sent: 13 April 2015 00:05
To: time-nuts@febo.com
Subject: [time-nuts] Distribution Amps
List,
There has been a large exchangeof ideas for various home-brew or other video
box alternatives which all wouldseem to work OK.
For me it was simpler
List,
There has been a large exchangeof ideas for various home-brew or other video
box alternatives which all wouldseem to work OK.
For me it was simpler to buy asurplus HP 5087A for best offer which turned out
to be $300 delivered.
Besides having 12 outputs, youhave a choice of 3
On 4/12/2015 3:04 PM, Perry Sandeen via time-nuts wrote:
List,
For me it was simpler to buy asurplus HP 5087A for best offer which turned out
to be $300 delivered.
The 5087 series is ancient technology that has mediocre performance.
I remember looking at the circuit designs in the
Although my current project doesn't have the strict requirements that
many of you have, I thought I would mention part of it, due to the
recent talk of distribution amps.
I am putting one of the FE5680A's that I bought a while back into a
permanent home. I have a nice box from a gutted HP
Hi again, Chris;
The HV at the end of the model number indicates that the unit is capable of
handling high voltage (up to 5V - TTL level) on the sync channel. The
0.7/1.0 Volt switch is to provide a bit of extra gain for long cable runs.
Aside from the HV difference, the unit appears to be
From: Chris Wilson ch...@chriswilson.tv
To: time-nuts@febo.com
Subject: Re: [time-nuts] Distribution amps for Thub=nderbolt and David
partridges divider box?
Hi again, Chris;
The HV at the end of the model number indicates that the unit is
capable of
handling high voltage (up to 5V - TTL level
These are handy little boxes for the money. Unfortunately the outputs are
not isolated from each other (galvanically and signal-wise) so be mindful
that if you connect/disconnect one port, the adjacent port will be
affected. Unless you need to, it is probably best to wire all 3 inputs in
parallel
On 19/05/13 19:12, Dave M wrote:
Yes... .Jump on it!
Seems to be a good price for it. If I needed a DA, I'd buy it in an
instant.
I just grabbed a pair! (After missing out on the Soekris boxes!)
They should go well with the A2100 Timing Receivers that are currently
sat in customs, and the
On 19/05/13 19:12, Dave M wrote:
Yes... .Jump on it!
Seems to be a good price for it. If I needed a DA, I'd buy it in an
instant.
I just grabbed a pair! (After missing out on the Soekris boxes!)
They should go well with the A2100 Timing Receivers that are currently
sat in customs, and
Hi
If you slew rate limit the square wave (which is reality) you get a sin(x)/x
frequency response. It doesn't go to infinity, but the lobes keep going for
quite a while.
Things like cables and connectors have upper frequency limits as well. A square
wave will only be happy with a linear
Folks,
Given that slew rate is so critical, why do we distribute sine waves and
perform the zero-crossing detection at every target instrument?
david
Trigger jitter is the noise at the trigger point. it's a combination
of thermal noise and the slew-rate at the trigger points. It is often
David,
On 11/03/2012 10:44 PM, David Hooke wrote:
Folks,
Given that slew rate is so critical, why do we distribute sine waves and
perform the zero-crossing detection at every target instrument?
... or rather, why do we design our input stages so they are so
slew-rate sensitive?
Sine isn't
Hi
If you have a sine wave, it gets into everything. You can identify it and take
it out of your data.
If you have a broad band uber-fast high level pules, it gets into everything.
Identifying it's impact and taking it out of the data - not so easy.
That may sound a bit crazy. I've actually
david wrote:
Given that slew rate is so critical, why do we distribute sine waves
and perform the zero-crossing detection at every target instrument?
Magnus made some good points in response to your question. To
elaborate a bit: it is much easier to provide a friendly transmission
The below is correct but a simpler way to say it is this:
A square wave contains the fundamental frequency plus every odd harmonic
up to infinity. A sine wave contains only the fundamental frequency.
It is the up to infinity part that causes all the trouble. And yes it
really does go to
Of course you can't have a perfect square wave! That would imply zero
transition time and since frequency is inverse to time that implies infinitely
high frequency bandwidth is required to achieve that perfect square wave.
Getting a square wave with a fast enough slew rate between high and
On 11/04/2012 01:13 AM, Peter Gottlieb wrote:
Of course you can't have a perfect square wave! That would imply zero
transition time
... oh, THAT would be useful! :D No trigger point jitter!
... and it would be a hell to contain within the cables and connectors
we have, as they leak a lot as
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