Ed wrote:
You could grab the buss bar with your bare hands and not feel a
thing. 48V isn't high enough to be dangerous.
It all depends on the current drawn through the body (and especially,
through one's heart). Therefore, it depends on the point-to-point
resistance through the body betwee
t; > -Original Message-
> > > From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com]
> On
> > > Behalf Of Pete Lancashire
> > > Sent: Tuesday, 10 September 2013 6:58 AM
> > > To: Discussion of precise time and frequency measurement
> >
time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Pete Lancashire
Sent: Tuesday, 10 September 2013 6:58 AM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Wavecrest DTS 2070
-2V is a common terminator voltage for ECL
In my days before gray h
;> generate the
> > > >>> +2.1 volts on the mainboard.
> > > >>>
> > > >>>
> > > >>> If I can lose the 2 linear PSU, I'll lose a ton of weight, but
> > > possibly
> > > >>>
> > > >>>
On 9/9/13 2:38 PM, Mark C. Stephens wrote:
I have seen a 12v car battery and a wire frame bed to torture victims on
television twice now.
Are you telling me that's bunk?! (pardon the pun)
As someone who used to make their living doing just such physical
effects for film and TV..
It's a spec
t
>Sent: Monday, September 9, 2013 4:21 PM
>Subject: Re: [time-nuts] Wavecrest DTS 2070
>
>
>Is 200 amperes @ 2v not lethal?
>
>
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Behalf Of Pete Lancashire
> Sent: Tuesday, 10 September 2013 6:58 AM
> To: Discussion of precise time and frequency measurement
> Subject: Re: [time-nuts] Wavecrest DTS 2070
>
> -2V is a common terminator voltage for ECL
>
> In my days before gray hair I worked on a machine that
ember 2013 7:24 AM
To: time-nuts@febo.com
Subject: Re: [time-nuts] Wavecrest DTS 2070
On 9/9/13 2:21 PM, Mark C. Stephens wrote:
> Is 200 amperes @ 2v not lethal?
Not particularly.. any more than putting your fingers across a 1.5 or 3V
battery i
and frequency measurement
Subject: Re: [time-nuts] Wavecrest DTS 2070
Only if whatever shorts it vaporizes violently enough to kill you. When I
worked at Burroughs in the 70s, I heard stories about low volts/high amps
hijinks.
Bob
>
> From: Mark C. St
On 9/9/13 2:21 PM, Mark C. Stephens wrote:
Is 200 amperes @ 2v not lethal?
Not particularly.. any more than putting your fingers across a 1.5 or 3V
battery is lethal.
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Is 200 amperes @ 2v not lethal?
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf
Of Pete Lancashire
Sent: Tuesday, 10 September 2013 6:58 AM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Wavecrest DTS
lto:time-nuts-bounces@**febo.com]
On Behalf Of Ed Palmer
Sent: Tuesday, 10 September 2013 1:53 AM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Wavecrest DTS 2070
Sorry, the oracle is out of the office today - I'm the janitor. :)
I see you've alrea
>>>>
>>>>
>>>> Yeah, I did play roulette by powering it up like that but I was a tad
>>>>
>>>>> annoyed as I was told it was a working unit.
>>>>> The bottom board on this one has millions of tiny surface mount c
>>>>
> >>>> Yes, but I would have thought that optoisolators would have been
> >>> cheaper
> >>> than optical transmitters, receivers, and cables.
> >>>
> >>>
> >>> Yeah, I did play roulette by p
t;>>> The bottom board on this one has millions of tiny surface mount caps
>>>> mounted on there sides.
>>>> It looks terribly fragile. Much of a job to get it out?
>>>>
>>>> Well, I described my process in the teardown. Is your board simila
From: time-nuts-boun...@febo.com
[mailto:time-nuts-bounces@**febo.com]
On Behalf Of Ed Palmer
Sent: Tuesday, 10 September 2013 1:53 AM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Wavecrest DTS 2070
Sorry, the oracle is out of the office today - I'm the ja
On Behalf Of Ed Palmer
Sent: Tuesday, 10 September 2013 1:53 AM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Wavecrest DTS 2070
Sorry, the oracle is out of the office today - I'm the janitor. :)
I see you've already replaced the 24V supply and po
al is just a matter of
> unplugging connectors and unscrewing the mounting screws.
>
>
> All the PSU screw heads are under it (of course)
>>
>
> Yup. I needed to get at the mounting screws for the cardcage so that I
> could inspect the motherboard.
>
> Ed
>
>
>
r
Sent: Tuesday, 10 September 2013 1:53 AM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Wavecrest DTS 2070
Sorry, the oracle is out of the office today - I'm the janitor. :)
I see you've already replaced the 24V supply and powered the unit up. I woul
lf Of Ed Palmer
> Sent: Tuesday, 10 September 2013 1:53 AM
> To: Discussion of precise time and frequency measurement
> Subject: Re: [time-nuts] Wavecrest DTS 2070
>
> Sorry, the oracle is out of the office today - I'm the janitor. :)
>
> I see you've already replaced the
: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Wavecrest DTS 2070
Sorry, the oracle is out of the office today - I'm the janitor. :)
I see you've already replaced the 24V supply and powered the unit up. I would
have removed all output connections on the
of precise time and frequency measurement
Subject: Re: [time-nuts] Wavecrest DTS 2070
Oops. Maybe I should have just kept my peace. I found a User's Guide here:
"http://qmsi.com/pics/Wavecrest2070.a.pdf"; which indicates it can take either
110 or 220. Pry open the fuse compartment and
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf
Of Henk ten Pierick
Sent: Monday, 9 September 2013 9:05 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Wavecrest DTS 2070
Hi,
The 207x is. Auto sensing for the mains.
Groet,
Henk
card cage.
> I have not a clue what that means..
>
>
> --marki
>
> -Original Message-
> From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
> Behalf Of Mark C. Stephens
> Sent: Monday, 9 September 2013 6:31 PM
> To: Bob Stewart; Discussion
ewart; Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Wavecrest DTS 2070
I pried open the fuse compartment.
Both fuses black. Black as in dead short black.
Not good. Short circuit on mains input.
Open case. big thick wire carry mains to solid state relay then off to switch
frequency measurement
Subject: Re: [time-nuts] Wavecrest DTS 2070
Oops. Maybe I should have just kept my peace. I found a User's Guide here:
"http://qmsi.com/pics/Wavecrest2070.a.pdf"; which indicates it can take either
110 or 220. Pry open the fuse compartment and see what'
To: Bob Stewart; Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Wavecrest DTS 2070
Oops. Maybe I should have just kept my peace. I found a User's Guide here:
"http://qmsi.com/pics/Wavecrest2070.a.pdf"; which indicates it can take either
110 or 220
t way to go about it, though. =)
Bob - AE6RV
>
> From: Bob Stewart
>To: Discussion of precise time and frequency measurement
>Sent: Sunday, September 8, 2013 11:13 PM
>Subject: Re: [time-nuts] Wavecrest DTS 2070
>
>
>Go to a tourist suppl
ob - AE6RV
>
> From: Mark C. Stephens
>To: "time-nuts@febo.com"
>Sent: Sunday, September 8, 2013 11:05 PM
>Subject: [time-nuts] Wavecrest DTS 2070
>
>
>I just received my DTS 2070 from 110 volt land.
>I live in 230 (well actually 250) volt land.
>
&g
I just received my DTS 2070 from 110 volt land.
I live in 230 (well actually 250) volt land.
I haven't plugged it in and I am being a total wuss about breaking the CAL
seals as they are still current.
Please help me, I really, really need to measure something with it! Anything
with it! But to d
Original Message-
> From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com]on
> Behalf Of Ulrich Bangert
> Sent: Tuesday, November 23, 2010 9:49 AM
> To: 'Discussion of precise time and frequency measurement'
> Subject: Re: [time-nuts] Wavecrest DTS 2070 GPI
[mailto:time-nuts-boun...@febo.com] On
Behalf Of Ulrich Bangert
Sent: Tuesday, November 23, 2010 12:49 PM
To: 'Discussion of precise time and frequency measurement'
Subject: Re: [time-nuts] Wavecrest DTS 2070 GPIB access
John,
I do not have any experience with the Wavecrest but my exper
11:27
> An: time-nuts@febo.com
> Betreff: [time-nuts] Wavecrest DTS 2070 GPIB access
>
>
> I'm looking at writing some code to drive the DTS 2070, but
> have been running into timeout errors performing any GPIB
> query (even *IDN?) while the instrument is taking
> measu
Hi
How long are the cables / what else is on the chain? They may not have "proper"
pull up's on the device.
Bob
On Nov 23, 2010, at 5:27 AM, John Miles wrote:
> I'm looking at writing some code to drive the DTS 2070, but have been
> running into timeout errors performing any GPIB query (even
I'm looking at writing some code to drive the DTS 2070, but have been
running into timeout errors performing any GPIB query (even *IDN?) while the
instrument is taking measurements, even in sizes/sets of 1/1 at a 1-pps
rate. Has anyone else run into this before?
This happens equally with either a
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