[time-nuts] Digital Scopes - suggestions

2007-10-24 Thread Hal Murray
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I'm looking for a digital scope.  Is there some obvious model(s) that I 
should keep an eye out for?

I don't need one, so I'm willing to wait and I'm flexible on parameters.

Mostly what I'm looking for is:
  reasonable (hobby) cost
  standard digital stuff: bright picture from a single event
  screen capture (GPIB or RS-232)

I expect there is something in the 100 MHz range.  I probably don't want to 
pay for a GHz front end, but I might if I got a good deal.

Quiet is good.

Running Windows is a minus in my book.  (I'm not smart enough to keep a 
Windows box virus free.)

Being able to see a 10 uSec pulse delayed by 1 sec would be good.




-- 
These are my opinions, not necessarily my employer's.  I hate spam.




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Re: [time-nuts] Digital Scopes - suggestions

2007-10-24 Thread swingbyte
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Hal Murray wrote:
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 I'm looking for a digital scope.  Is there some obvious model(s) that I 
 should keep an eye out for?

 I don't need one, so I'm willing to wait and I'm flexible on parameters.

 Mostly what I'm looking for is:
   reasonable (hobby) cost
   standard digital stuff: bright picture from a single event
   screen capture (GPIB or RS-232)

 I expect there is something in the 100 MHz range.  I probably don't want to 
 pay for a GHz front end, but I might if I got a good deal.

 Quiet is good.

 Running Windows is a minus in my book.  (I'm not smart enough to keep a 
 Windows box virus free.)

 Being able to see a 10 uSec pulse delayed by 1 sec would be good.




   
I bought an old hp1661CS logic analyzer on ebay for not a lot of money.  
There's a 16500 model for $280 up at the moment.  These come with 2 x 
1GS/s digital scopes as well as the logic analyzer function.  They're 
not designed as scopes but they do a pretty good job.  The prices for 
similar capability scopes are usually higher.
Good luck

Tim

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Re: [time-nuts] Digital Scopes - suggestions

2007-10-24 Thread John Ackermann N8UR
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Hal Murray said the following on 10/24/2007 03:47 AM:
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 I'm looking for a digital scope.  Is there some obvious model(s) that I 
 should keep an eye out for?
 
 I don't need one, so I'm willing to wait and I'm flexible on parameters.
 
 Mostly what I'm looking for is:
   reasonable (hobby) cost
   standard digital stuff: bright picture from a single event
   screen capture (GPIB or RS-232)
 
 I expect there is something in the 100 MHz range.  I probably don't want to 
 pay for a GHz front end, but I might if I got a good deal.

I have a Tek TDS-2012 that I like a lot.  Dual channel, 100 MHz and 1
Gsample, color LCD, very small and light.  Comms (RS-232, printer, GPIB)
is an optional module.  Base price is something around $1200 new, I
think.  I think they've been around long enough that there should be
some used ones out there somewhere.

There are also several other models in the same series that vary in
number of channels, speed, and monochrome versus color display.

I still use an analog scope (Tek 2465B) for serious RF work, but the
digital can't be beat for looking at PPS and general bench use.

(My theory -- Tektronix for scopes, HP for everything else.)

John


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Re: [time-nuts] Digital Scopes - suggestions

2007-10-24 Thread Patrick
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Hi John

I think I have the perfect suggestion for you.

I spent 200+ hours researching scopes before I started my business, 
primarily because I am a cheap bastard. I finally found what I wanted, 
at the price I wanted. Please check out bitscope.com. I bought one over 
a year ago and it has paid for itself many times over. The support has 
been absolutely excellent. It is a PC controlled scope but it is 
external to the PC so it does not pick up noise.I bought the 310N, it 
has a built in logic analyzer, an signal out function and it can monitor 
two channels by multiplexing one. It can trigger from logic or analog. 
It runs on Windows and Linux. There are now Debian and Ubuntu packages 
for easy install and they are just releasing a control library. Together 
with my AEMC current probe I have used it to fix a number of difficult 
problems.

I had to pay a 7% tariff to get it into Canada but shipping was cheap 
and the price is low to start with. I just checked the current price and 
it looks like it is $585 U.S

Please don't hesitate ask if you have any questions. Bruce at Bitscope 
had been very helpful and sold me a great scope. I feel I owe him time 
considering the insane amount of questions I have asked him, of which 
none of them were due to shortcomings of his product.

-Patrick

John Ackermann N8UR wrote:
 Hal Murray said the following on 10/24/2007 03:47 AM:
   
 ); SAEximRunCond expanded to false
 Errors-To: [EMAIL PROTECTED] RETRY


 I'm looking for a digital scope.  Is there some obvious model(s) that I 
 should keep an eye out for?

 I don't need one, so I'm willing to wait and I'm flexible on parameters.

 Mostly what I'm looking for is:
   reasonable (hobby) cost
   standard digital stuff: bright picture from a single event
   screen capture (GPIB or RS-232)

 I expect there is something in the 100 MHz range.  I probably don't want to 
 pay for a GHz front end, but I might if I got a good deal.
 

 I have a Tek TDS-2012 that I like a lot.  Dual channel, 100 MHz and 1
 Gsample, color LCD, very small and light.  Comms (RS-232, printer, GPIB)
 is an optional module.  Base price is something around $1200 new, I
 think.  I think they've been around long enough that there should be
 some used ones out there somewhere.

 There are also several other models in the same series that vary in
 number of channels, speed, and monochrome versus color display.

 I still use an analog scope (Tek 2465B) for serious RF work, but the
 digital can't be beat for looking at PPS and general bench use.

 (My theory -- Tektronix for scopes, HP for everything else.)

 John


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Re: [time-nuts] Digital Scopes - suggestions

2007-10-24 Thread Patrick
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Hi Brooke

I am not exactly sure. You can go into the uS range but I had better 
check with the Bitscope people about the exact details. I will forward 
this email. I am sure you will have an answer tomorrow.

-Patrick



Brooke Clarke wrote:
 Hi Patrick:

 They have an impressive line and I like PIC based products.  Can you measure 
 the period of a 1 PPS signal when the pulse width is on the order of 0 us?

 Have Fun,

 Brooke Clarke
 http://www.PRC68.com
 http://www.precisionclock.com
 http://www.prc68.com/I/WebCam2.shtml 24/7 Sky-Weather-Astronomy Cam


 Patrick wrote:
   
 ); SAEximRunCond expanded to false
 Errors-To: [EMAIL PROTECTED] RETRY

 Hi John

 I think I have the perfect suggestion for you.

 I spent 200+ hours researching scopes before I started my business, 
 primarily because I am a cheap bastard. I finally found what I wanted, 
 at the price I wanted. Please check out bitscope.com. I bought one over 
 a year ago and it has paid for itself many times over. The support has 
 been absolutely excellent. It is a PC controlled scope but it is 
 external to the PC so it does not pick up noise.I bought the 310N, it 
 has a built in logic analyzer, an signal out function and it can monitor 
 two channels by multiplexing one. It can trigger from logic or analog. 
 It runs on Windows and Linux. There are now Debian and Ubuntu packages 
 for easy install and they are just releasing a control library. Together 
 with my AEMC current probe I have used it to fix a number of difficult 
 problems.

 I had to pay a 7% tariff to get it into Canada but shipping was cheap 
 and the price is low to start with. I just checked the current price and 
 it looks like it is $585 U.S

 Please don't hesitate ask if you have any questions. Bruce at Bitscope 
 had been very helpful and sold me a great scope. I feel I owe him time 
 considering the insane amount of questions I have asked him, of which 
 none of them were due to shortcomings of his product.

 -Patrick
 

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Re: [time-nuts] Digital Scopes - suggestions

2007-10-24 Thread Patrick
); SAEximRunCond expanded to false
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I was wondering about that! :-) Patrick

Brooke Clarke wrote:
 Hi Patrick:

 That should be 10 us not 0 us.

 Thanks  Have Fun,

 Brooke Clarke
 http://www.PRC68.com
 http://www.precisionclock.com
 http://www.prc68.com/I/WebCam2.shtml 24/7 Sky-Weather-Astronomy Cam


 Patrick wrote:
   
 ); SAEximRunCond expanded to false
 Errors-To: [EMAIL PROTECTED] RETRY

 Hi Brooke

 I am not exactly sure. You can go into the uS range but I had better 
 check with the Bitscope people about the exact details. I will forward 
 this email. I am sure you will have an answer tomorrow.

 -Patrick



 Brooke Clarke wrote:

 
 Hi Patrick:

 They have an impressive line and I like PIC based products.  Can you 
 measure 
 the period of a 1 PPS signal when the pulse width is on the order of 0 us?

 Have Fun,

 Brooke Clarke
 http://www.PRC68.com
 http://www.precisionclock.com
 http://www.prc68.com/I/WebCam2.shtml 24/7 Sky-Weather-Astronomy Cam


 Patrick wrote:
  

   
 ); SAEximRunCond expanded to false
 Errors-To: [EMAIL PROTECTED] RETRY

 Hi John

 I think I have the perfect suggestion for you.

 I spent 200+ hours researching scopes before I started my business, 
 primarily because I am a cheap bastard. I finally found what I wanted, 
 at the price I wanted. Please check out bitscope.com. I bought one over 
 a year ago and it has paid for itself many times over. The support has 
 been absolutely excellent. It is a PC controlled scope but it is 
 external to the PC so it does not pick up noise.I bought the 310N, it 
 has a built in logic analyzer, an signal out function and it can monitor 
 two channels by multiplexing one. It can trigger from logic or analog. 
 It runs on Windows and Linux. There are now Debian and Ubuntu packages 
 for easy install and they are just releasing a control library. Together 
 with my AEMC current probe I have used it to fix a number of difficult 
 problems.

 I had to pay a 7% tariff to get it into Canada but shipping was cheap 
 and the price is low to start with. I just checked the current price and 
 it looks like it is $585 U.S

 Please don't hesitate ask if you have any questions. Bruce at Bitscope 
 had been very helpful and sold me a great scope. I feel I owe him time 
 considering the insane amount of questions I have asked him, of which 
 none of them were due to shortcomings of his product.

 -Patrick

 
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