MessageView 421F schematic

If a 4800 or 7200 V overhead crossed with the secondary lines to ANY
home, I would expect there would be plenty of damage to go around. In
fact, I doubt a typical opto isolator is big enough (lead distance) to
prevent arc over in the worst case.

ray13 wrote:

On Feb 23, 12:38 am, **THE-RFI-EMI-GUY** <rhyol...@nettally.com
wrote:


Right! which reminds me some time back, I gave Helga some bad advice
involving live electricity and a swimming pool. She hasn't posted since!

;-P



Homer J Simpson wrote:


"John Gilmer" <gil...@crosslink.net> wrote in message
news:45de2d4b$0$21489@dingus.crosslink.net...


Why should he?


It's the equivalent of use a "scope" probe to look at line voltage. The
"danger" is at the probe tip but not at the end going to the scope.


No, it isn't. The designer of the scope will have at least contemplated what
happens when you are examining a live circuit at 120 or 240 volts. Will the
designer of the computer have done as much?


--
Joe Leikhim K4SAT
"The RFI-EMI-GUY"Š

"Treason doth never prosper: what's the reason?
For if it prosper, none dare call it treason."

"Follow The Money" ;-P



I am still shaking my head, nobody mentioned a GFI.
Isolation transformer is an oxymoron.

I can show anybody how an Isolation transformer won't provide any
isolation what so ever. When that 4800volt line that is over head of
the 220 Mains, drops on the 220 lines, that so called isolation
transformer is toast. It happened to my neighbor. Power company said
it was an act of god. Until the neighbor came up with the defective
splice, (that wasn't crimped) they used on the 4800volt line.

I would use a high speed opto coupler with 6000 volt isolation.

73

N8ZU
Click to expand...
--
Joe Leikhim K4SAT
"The RFI-EMI-GUY"Š

"Treason doth never prosper: what's the reason?
For if it prosper, none dare call it treason."

"Follow The Money" ;-P
 
Pienipäistä moraalia, suuret toleranssit.

Jälleen kerran asiaa, jota maassamme tuskin kourallinen edes tietää. OL-3
työmaan mokailut on jo alansa klassikoita. Mutta jopa siinä ilmapiirissä
tämä hakee kyllä vertaistaan minusta. Ydinvoimalan suunnittelu oli enemmän
kuin hakusessa jo startista asti ja se meinaan näkyy. Ja siksi TVO on
suluttanut työmaan megamokia henkilökuntaansa tarkoin uhkaillen ja
painostaen vaikenemaan. No työläiset ovat siis kuukausimääriä lekailleet
haperia puolalaisia suojapellinkuoria paikoilleen. Metalliosissa todetut
massiiviset tuumaluokkaiset megatoleranssivirheet on toki jo niineen
tuhoisan tulevaisuuden takuutavaraa, mutta kun niitä runnotaan väkipakolla
vängällä paikkoihin jonne eivät sovi, niin puhutaan ydinreaktorin
suoranaisesta ja tahallisesta miinoittamisesta!



No ydinalalla nyt ei tunnetusti TVO/ STUK:lle ja vastaaville ole niin tuuman
päälle, pääasia että meteliä tulee ja palkat juoksee. Tulevat sukupolvet
sitten tällaista huumoria hengillään toki maksaa ja maksattaa. Mutta täytyy
sanoa, ettei tämmöiset ole kuin, no hei alkupaloja, jatkossa päästään kiinni
itse "juttuun"! OL-3 voimalaa oli jo kuukausimääriä rakennettu ongelmitta.
Kukaan ei huomannut yhtään mitään. Sitten eräänä kauniina päivänä
puolalainen ydinorja, ei toki insinööri, eiväthän ne mitään oikeasti osaa,
saati uskalla. Vaan arkinen perustyöläinen alkoi pohtia. Hänestä oli hiukan
"outoa", että voimalaan merivesi tuli moottoritien levyistä jokea pitkin,
mutta.. .. Niin tosiaan minnes se katoaa, kaveri alkoi kysellä kummissaan?



Vaikka tässä nyt mitään outoa. Ydinvoimalasta oli vaan kas hienoa
yksinkertaisesti UNOHTUNUT moinen pikku nyanssi. Ranskassa kun sellaisia
turhakkeita ei oltu ikään kuin "totuttu" käyttämään haihdutustornien takia.
Paljonkos sellaiset poistokanavat mahtipontisia ydininsinöörejä kiinnostaa?
No tuumasta toimeen ja summamutikassa lyijykynällä kämmensyrjällä kuvaan
hutaistaan kanavalle räjäytysreikä. Joten se siitä ja koko työmaa uusiksi!
No kanava saadaan ja kaikki huokaisevat, ettei lehdistö saanut vihiä ja
naurut jäi tulematta. Meni taas muutama tovi. Lieneekö ollut tämä
puolalaisorja, tuskin koska ydinalalla älykkyyttä ei suvaita toki. Kaveri
oli siis lempattu, poissa jaloista haittaamassa ydinnerouden
ilmentymäklamouria. Ehkä se silti on puolalaisissa ydinorjissa geeneissä,
että huomaavat? Yhtä kaikki pian oli huomiona, että kanava oli pikkaisen
ahdas. Juu ei mitään senttejä, ei edes kymmeniä. ..Niin kunnon OL-3 tyyliin
heittoja METREISSÄ ja USEAMPI! .



No sitten aivoriihtä pystyyn, että miten moka taas salataan ja
miljarditappiot piilotetaan? No yhtä kaikki megasuurta piikkausta, kun
räjäyttelyt sortaisivat koko ydinhyyskän. Voi kuvitella mitä metrien
levyinen piikkausurakka tarkoittaa? No ehkä räjäyttely ei olisi ollut
lainkaan tuomassa lisäriskejä silti? 17.05-08 lehdet kun häpeillen TVO:n
megamokia kertoilivat miten Olkiluodon seinät suorastaan tursuavat sinne jo
valmiiksi kätkettyjä ties mitä räjähdysaineistusta. Oli löytynyt kuulema
niin paljon ja lukuisista paikoista, että. .. no hei kun moka on tehty, niin
syyllistetään ketä käsiin saadaan. Eli asia on mennyt nyt poliisitutkintaan!
No mitä uutta ydinalalle tässä enää on, en todella tiedä. Mutta ehkä näin
suomalaispoliisivyörytyksellä saadaan ydinvoimalatyömaan pian 80 % <
ulkomaalaisorjajoukkojen sekaan viimein myös
suomalaisbroletariaatipoliisitutkijoita! Hu heijaa, menee taas ydinalamme
niin sotkuiseksi, ettei näitä maassamme lisäkseni kukaan edes osaa, saati
tiedä tiedottaa. No tässä mitään, TVO:kin puolusteli, ettei valmiiksi
miinoitettuja ydinvoimalan seinämiä kannata ihmetellä saati surra!? Toki,
toki, mutta miksei? No koska jopa Areva on jo pitkään sen kiteyttänyt
käyttökelvottomaksi käsiin "räjähtäväksi jo alkujaan epäonnistuneeksi
koekyhäelmäksi". Ja taas ydinaiheesta lisää jahka saan naurultani
näpyteltyä.)
 
Thanks Jamie

Yes, it's a CRT. I was able to get an extremely faint vertical line
using the cal output and brightness on full bore. I then breadboarded a
filter and am now able to see the lines quite clearly on both square and
sawtooth.

Thanks again for your help, I was beginning to think that my new
purchase was faulty!

Cheers,

Dave

Jamie wrote:
thesponge wrote:

I have a Protek 20MHz scope that doesn't display the vertical line of a
square wave or a sawtooth. Sine and triangle are both fine. I have tried
both channels and every possible combination of settings to no avail.
Any ideas?
Cheers,
Dave
Is this a CRT type unit?

If so, the problem is the raise time, it's exceeding the scopes
CRT response time, and most likely it's driving circuits.
It sounds like you have a high BW input with a Low BW response.

If you have a calibration function for your 10:1 probe, use it to
adjust the corners of the square wave, it may ease the response
enough for you to see the vertical.

Also, bringing up the brightness should show you a faint vertical
line.

P.S.
This is common on a CRT scope, your Low Pass filer may help you here
if you have one.


http://webpages.charter.net/jamie_5"
Click to expand...
 
On Sun, 03 May 2009 17:25:01 +0930, thesponge wrote:

I then breadboarded a filter
and am now able to see the lines quite clearly on both square and
sawtooth.
Click to expand...
Why would you want to do this? Your filter degrades the rise
times, to the point where the oscilloscope can display them, hence the
display you have will be meaningless. What you see is now definitely not
what you've got.

In a nutshell, the rise of the signal is faster than the writing speed of
the CRT. You have to live with it.

Just "imagine" the vertical portions, and measure rise times between the
ends of the opposing horizontal portions, bearing in mind that the rise
time of the vertical amplifier will be 17.5 nanoseconds for a 20MHz
bandwidth, assuming the usual first-order response.

--
"Electricity is of two kinds, positive and negative. The difference
is, I presume, that one comes a little more expensive, but is more
durable; the other is a cheaper thing, but the moths get into it."
(Stephen Leacock)
 
I ran the signal through the filter to assure myself that my new $420
purchase can actually display a vertical line. Now that I can see that
the display is not faulty, the filter can be removed and I can use the
scope "normally". It's my first scope, and I just wanted to make sure
that I didn't have to return it under warranty!

Thanks again for your help guys,

Dave

Fred Abse wrote:
On Sun, 03 May 2009 17:25:01 +0930, thesponge wrote:

I then breadboarded a filter
and am now able to see the lines quite clearly on both square and
sawtooth.

Why would you want to do this? Your filter degrades the rise
times, to the point where the oscilloscope can display them, hence the
display you have will be meaningless. What you see is now definitely not
what you've got.

In a nutshell, the rise of the signal is faster than the writing speed of
the CRT. You have to live with it.

Just "imagine" the vertical portions, and measure rise times between the
ends of the opposing horizontal portions, bearing in mind that the rise
time of the vertical amplifier will be 17.5 nanoseconds for a 20MHz
bandwidth, assuming the usual first-order response.
Click to expand...
 
"(Ż`ˇ.¸Craig Chilton¸.ˇ´Ż) •• I have shit between the ears, but I have
something solid in the arse ••" <xanadu222@mchsi.com> spammed in message
news:nj2o45t5n22i905329b5k0l2ksas8oj72q@4ax.com...
On Wed, 1 Jul 2009 00:11:17 -0700 (PDT),
"Panama Floyd" <panamfloyd@hotmail.com> wrote:

"(Ż`ˇ.¸Craig Chilton¸.ˇ´Ż) •• I have shit between the ears,
but I have something solid in the arse ••" <xanadu222@mchsi.com
spammed in message



Sensible and truthful portions retained, below.

___________________
/| /| (Ż`ˇ.¸Craig Chilton¸.ˇ´Ż)
||__|| | MORONIC BIGOT |
/ O O\ | "The Fartblaster." |
/ \ | troll & spammer |
/ \ \|____ "turd mixer" _____|
/ _ \ \ ||
/ |\____\ \ ||
/ | | | |\__/ ||
/ \|_|_|/ | _ ||
/ / \ |____| ||
/ | | | --|
| | | |__ _ --|
* _ | |_|_|_| | \-/
*-- _--\ _ \ | ||
/ _ \\ | / `
* / \_ /- | | |
* ___ c_c_c_C/ \C_c_c_c____________
(Ż`ˇ.¸Troll Craig Chilton¸.ˇ´Ż)
Click to expand...
CRAIG'S SPAM: 10,000 messages in 254 groups in 45 days - most blatant
advertising scam "business".
 
Maybe not 1/4 Oz, but check :
www.st-anna.data.se, under "PCB Laminate".
B.t.w, what are you building with 1/4 Oz laminate ?

Jan-Erik.

Dev Null wrote:
Hello,
I want to buy 2 - 3 ft2 each of 0.021" and 0.039" PCB with 1/4
Oz. copper. I would be interested in anything close to these specs.

Please respond to the group.

Thanks
Click to expand...
 
Jan-Erik Söderholm <aaa@aaa.com> wrote in
news:3EFADC26.F7A823F5@aaa.com:
..
Dev Null wrote:

Hello,
I want to buy 2 - 3 ft2 each of 0.021" and 0.039" PCB
with 1/4
Oz. copper. I would be interested in anything close to these
specs.

Please respond to the group.

Thanks



Maybe not 1/4 Oz, but check :
www.st-anna.data.se, under "PCB Laminate".
B.t.w, what are you building with 1/4 Oz laminate ?

Jan-Erik
Click to expand...
Thanks for your post.
This is for research on high-density chip-to-board interconnects. ~
1000/cm2.
 
In message <3f00896b_3@hpb10302.boi.hp.com>, Bob Myers
<nospamplease@addressinvalid.com> writes
"The Technical Manager" <techman@yahoo.co.uk> wrote in message
news:3F006546.87531244@yahoo.co.uk...
In a 1930s edition of the Bell System Technical Journal were two cross
sectional views of co-axial cables with two centre conductors surrounded
by a single screening braid enclosing both.

Shielded twinlead, in other words. By definition, this is
NOT a "coaxial" cable. It's sometimes referred to as a
"twinaxial" - at least, that's what Belden calls it. Check out
their types 9250 (95 ohm), 9207 (100 ohm), or 9271 (the
classic 124 ohm). Such things are used for balanced lines that
have to be protected from crosstalk, etc..

Bob M.


You could also mooch around your local computer salvage place and watch
Click to expand...
out for IBM System 36/38 or AS/400 kit, they used Twinaxial cable,
though I'm not sure of the impedance
--
Clint
 
Stop picking on the poor sock puppet. Better yet, go rent "A Beautiful Mind"
and the you'll know the rest of the story. He had death rays too you
know......
 
In article <vg6lkdp5ehpp38@corp.supernews.com>,
dbessmer@easystreet.com says...
Stop picking on the poor sock puppet. Better yet, go rent "A Beautiful Mind"
and the you'll know the rest of the story. He had death rays too you
know......
Click to expand...
We went to see that. The popcorn machine caught on fire and we
had to exit the theatre before we found out if the nut was really
eerguy or Dimbulb! We weren't even given passes to go back to
find out! So, which is it? eer or dimmie? No, don't tell me it
was really newsie!

--
Keith
 
On Mon, 30 Jun 2003 13:03:03 -0600, "Bob Myers"
<nospamplease@addressinvalid.com> wrote:
Shielded twinlead, in other words. By definition, this is
NOT a "coaxial" cable. It's sometimes referred to as a
"twinaxial" - at least, that's what Belden calls it. Check out
their types 9250 (95 ohm), 9207 (100 ohm), or 9271 (the
classic 124 ohm). Such things are used for balanced lines that
have to be protected from crosstalk, etc..

Exactly.
Click to expand...
Widely used in the telephone industry.
We used to get them in 100m rolls, when I was still in that industry.
Regards
Johan Smit
 
Also look on the back of the unit. There might be a momentary push button
that is used to change the input acceptance window. If you AC input is
marginal then it might be faulting. I have seen APC's cycle on and off line
when input voltage is too low/high.

"ToddT" <towntw@yahoo.com> wrote in message
news:1d9a80e8.0306120501.6c2afb8e@posting.google.com...
I recently purchased a used APC Smart-UPS 1000 (Model SU1000BX120)
through ebay. This item was listed as being in "good condition", with
no batteries included.

Searching APC's web site and other sources, I determined this needed
an RBC6 battery pack or equivalent. I subsequently purchased two 12
volt 12 amp hour batteries.

The UPS arrived, the batteries arrived, and APC's documentation is not
very clear on battery installation. It would appear that the two
batteries are to be connected in series, thereby providing 24 volts of
output.

I installed the batteries, plugged in a small load (a 100W lamp),
plugged in and turned on the UPS. The load gauge showed one LED, the
battery charge gauge showed one LED, the on-line LED blinked for about
5 seconds before going off, and the on-battery LED stayed lit. The
UPS beeped four times every 30 seconds as it is supposed to when on
battery power. The lamp did come on. The UPS would not stay powered
by the utility.

I've read some things that indicate a UPS will do funny things until
the batteries are charged. So I left the UPS turned off but plugged
in overnight, as the manual indicates that this will charge the
battery.

Since the following morning, here is what happens, either with or
without a load plugged in. Upon pressing the On button, all the LEDs
flash once, there is a beep, and somewhere inside a switch is thrown
(I can hear it click). Subsequent presses of the ON button do
nothing. Pressing and holding the ON button gets one beep after one
second, and that can be repeated. Pressing and holding the OFF button
for one second resets the internal switch (I can hear it click), at
which point I can repeat the action in this paragraph. The lamp
(load) never even blinks.

On the chance I screwed up the battery connection, I removed one
battery and tried it again. The only difference is that after the
LEDs flash and the beep, there is apparently not enough juice to get
the internal switch to "stick". Repeated pressing of the ON button
causes the same LED flash and beep.

Any ideas on where to go from here to make this thing work, or have I
done something to screw it up? Any thoughts/help is appreciated.
Thanks!
Click to expand...
 
Not familiar with this particular model, but I do know couple of things
about UPS'
APC ups' usually OFF-LINE type which means AC input goes through to output
until AC input fails, then Batteries come ON-LINE.
- Did you received any Docs ?
- Look at the specs for the DC voltage which determines how many batteries
in series you need.
- The UPS batteries are not quite the same as the standard car batteries.
Read carefully the battery type specs recommended by APC for this model. I
have seen some odd types which means must by from the manufacturer at
exagerated prices.

Trouble shooting can be very difficult without complete tech docs.
Mostly they change the boards ($$$).

Wish I could help more. Good luck



"Thom" <tigresscmdlv2@earthlink.net> a écrit dans le message de news:
w0fNa.25280$C83.2343259@newsread1.prod.itd.earthlink.net...
Also look on the back of the unit. There might be a momentary push button
that is used to change the input acceptance window. If you AC input is
marginal then it might be faulting. I have seen APC's cycle on and off
line
when input voltage is too low/high.

"ToddT" <towntw@yahoo.com> wrote in message
news:1d9a80e8.0306120501.6c2afb8e@posting.google.com...
I recently purchased a used APC Smart-UPS 1000 (Model SU1000BX120)
through ebay. This item was listed as being in "good condition", with
no batteries included.

Searching APC's web site and other sources, I determined this needed
an RBC6 battery pack or equivalent. I subsequently purchased two 12
volt 12 amp hour batteries.

The UPS arrived, the batteries arrived, and APC's documentation is not
very clear on battery installation. It would appear that the two
batteries are to be connected in series, thereby providing 24 volts of
output.

I installed the batteries, plugged in a small load (a 100W lamp),
plugged in and turned on the UPS. The load gauge showed one LED, the
battery charge gauge showed one LED, the on-line LED blinked for about
5 seconds before going off, and the on-battery LED stayed lit. The
UPS beeped four times every 30 seconds as it is supposed to when on
battery power. The lamp did come on. The UPS would not stay powered
by the utility.

I've read some things that indicate a UPS will do funny things until
the batteries are charged. So I left the UPS turned off but plugged
in overnight, as the manual indicates that this will charge the
battery.

Since the following morning, here is what happens, either with or
without a load plugged in. Upon pressing the On button, all the LEDs
flash once, there is a beep, and somewhere inside a switch is thrown
(I can hear it click). Subsequent presses of the ON button do
nothing. Pressing and holding the ON button gets one beep after one
second, and that can be repeated. Pressing and holding the OFF button
for one second resets the internal switch (I can hear it click), at
which point I can repeat the action in this paragraph. The lamp
(load) never even blinks.

On the chance I screwed up the battery connection, I removed one
battery and tried it again. The only difference is that after the
LEDs flash and the beep, there is apparently not enough juice to get
the internal switch to "stick". Repeated pressing of the ON button
causes the same LED flash and beep.

Any ideas on where to go from here to make this thing work, or have I
done something to screw it up? Any thoughts/help is appreciated.
Thanks!
Click to expand...
 
I'm sure that you, or someone, could make anything you want, given enough
funds. It's just difficult to control the waveform when things get that
fast. Plus, why would you need all that flexibility above 10 MHz? Certainly
won't be useful for tuning radios and TVs. High end audio equipment might be
testable with non-sinusoidal waveforms, but how high do they go in
frequency?

Me thinks you should spend a little time figuring out the use for such a
piece of equipment, before you go on a hunt to find or make one.

Bob M.
======
"EMScan81" <emscan81@aol.com> wrote in message
news:20030710001711.02999.00000119@mb-m12.aol.com...
Thanks Bob!!

Could I make a function generator that has the range that I desire, or is
that
too much work, etc?

Thanks,
Ed
Click to expand...
 
Dear Sir ,
Please explain more what you are looking for?
I have access to a surplus where there are plenty of second hand hp
measurement, analyzers etc.. equipment.
The references of this surplus are:
Electronique Diffusion
137 avenue Paul Vaillant Couturier, F-94250 Gentilly , France
Tel +33-1 47 35 19 30
Fax +33-1 49 85 91 78
They have a large stock of measurement equipment and they also make some
repair. Only a part of their stock is available at this url:
http://www.electronique-diffusion.fr/Gentilly/Gentilly.html

@+
best regards,
MB.
M.C.D. Roos wrote:
Anyone ever seen one of these? I only know the HP HPIB floppy disk
drives, but this one is made by Ando. Are these compatible with the HP
drives (and would respond to the same commands)? Right now it isn't
responding at *IDN?...

greetings,
Michiel
Click to expand...
 
A lot depends on what you mean by analysis, but the answer is almost
certainly "no"

The spectrum analyser software which runs on a PC using a sound card has a
bandwidth of a few tens of kHz, you can analyse sound, but that's all.

Analysis requires expertise, also, its not the sort of thing you can do
without experience, and usually an engineering degree.

Best Regards,

Bill C



"Nathan Higgins" <nathan@link9.net.no-spam> wrote in message
news:arXKa.8160$KQ7.57119859@news-text.cableinet.net...
I presume you are using this to track the signal for sat positioning?
There
are specific analysers for doing this with, as far as I know there isn't
an
interface for feeding coax directly into a PC for analysis, but there are
analysis devices with an output to plug into a PC. For what you're doing
you're probably better off getting someone with the right kit to do the
job
unless you want to spend Ł's on buying equipment for yourself.

Nathan D Higgins
Click to expand...
 
You are very right, though, in the "it's digital so it must be better"
mentality of the late 20th and 21st century, we often loose capability we
had decades ago.

Bill C.



"Bob Koller" <kollerb@attbi.com> wrote in message
news:BX7Ka.12146$3d.8410@sccrnsc02...
Go find a Tektronix 7904(A), and what ever vertical preamps and timebase
you
need. These easily do 500Mhz, are plentiful, lightweight for a full size
scope, and very versatile.
Should be easy to find on eBay.

bob

"ddwyer" <dd@ddwyer.demon.co.uk> wrote in message
news:ZhamwJAaNM++EwRf@ddwyer.demon.co.uk...
In my lab there is a wide variety of oscilloscopes to chose from.
All the new scopes are colour LCD and digital i.e they digitise the
analog signal and display with a resolution limited by the number of A/D
bits (12 typically often 8) is limited dynamic range and quantized noise
floor.
I find that for careful measurement only old fashioned analog CRT scopes
can display small signal envelopes superimoposed on larger signals as
often happens with Op amps that are unstable at 100s Megs.
I also wanted to look at distortion by subtracting one channel signal
from another, again not enough dynamic range. There are still analog
scopes with CRTs for 200MHz by but who makes the same capable of
operating past 500MHz, Im sure there were scopes capable of this 30
years ago!!

--
ddwyer
Click to expand...
 
"Winfield Hill" <whill@picovolt.com> wrote in message
news:bejimt014io@drn.newsguy.com...
Walter wrote...
[...]
In my own power supplies, I've usually put a switch on the output, so
that
I can leave the supply powered up and simply switch the output on and
off.
But the bench supplies I've bought never seem to have that feature,
which
has always puzzled me.

Such a switch can get you into trouble, if it applies an instantaneous
supply-voltage step to a circuit. The dV/dt slew rate can be very high.
Click to expand...
Hmm, good point. Of course, that could happen in the as-manufactured
circuit too - some of my circuits get powered by batteries, turned on by a
switch, so there's going to be as much dV/dt as the internal impedance of
the battery permits. If the circuit dies on the power supply, it might be
telling me something.

I guess what I really want is a switch that either cuts the output to zero
or ramps it back up to the preset voltage over the course of, say, 100msec.
I do want it to go all the way to zero, though, so that when I'm fooling
around with the circuit I don't inadvertently reverse-bias a tantalum cap or
whatever. Alternately, I want the max current to be limited to < 5mA or
so - which amounts to the same thing.

It always makes me uncomfortable to turn on a circuit under test by means of
turning on the AC to the bench power supply. I wonder whether the supply's
current limiting circuitry will be able to kick in in time, whether the
voltages will stabilize right away, and so forth. I guess I've never
actually had a problem with it, though; not sure why.

-w
 
On Wed, 09 Jul 2003 19:59:07 +0100, EMScan81 wrote:

Hi there,

I need a signal generator, one I'd like to go from 1 Hz to 1000MHz, with
sin wave, ramp, square wave, triangle wave options. I don't know about
this stuff too well, can you recommend companies to buy from? I want to
save some money, how do I know a used piece of kit is worth it? Please
help!! Thanks, Ed
Click to expand...
AFAIK, no such instrument exists.

Complex waveforms at 1000MHz? Damn near impossible even today unless you
have the sort of money only large corporations have.

--
Then there's duct tape ...
(Garrison Keillor)
nofr@sbhevre.pbzchyvax.pb.hx
 
You must log in or register to reply here.

Welcome to EDABoard.com

Sponsor

Back
Top