please dont rip this site

Test Equipment, Debuggers, Development Systems

Test Equipment

Name Cost Pros Cons
Logic Probe $2-$20 Handy, cheap Only sees one line,
Does not record in real time (may have a pulse LED to show AC signals)
Logic Analyzer $200-$2000
(speed)
 Can record events in real time.
 Some can disassemble machine code to provide more readable diagnostics.
May not see the signal the same way the circuit under test sees it due to differing level sensitivities or differences in timing of the sampling.
Oscilloscope
(Analog, with trigger)
$300-$5000
(depending on speed)
 Can view composites of events (detected by external trigger circuit) in real time.
 Displays the entire signal including the exact voltage and timing (if the scope is faster and more accurate than the signal). Really shows what the circuit is seeing (probably).
 Non-recording models do not show individual signals but instead display a composite of many copies of the same signal one on top of the next. Isolated incidents may be missed.
 Can display only one or two signals (called channels or traces) at a time.
 If the signal changes fast enough, the 'scope may miss it.
 Doesn't know how the circuit will respond to the signal.
Oscilloscope
(Digital)
$1000-$50,000
(depending on speed)
 Can record and view individual events (detected by external trigger circuit) in real time.
 Displays the entire signal including the exact voltage and timing. Really shows what the circuit is seeing.
 Can display only one or two signals (called channels or traces) at a time.
 If the signal changes fast enough, the 'scope may miss it.
 Doesn't know how the circuit will respond to the signal.
Mixed Mode DSO $1000-$100,000
(depending on speed)
Combination of a Digital Oscilloscope with a Logic Analyzer. All the advantages...  If the signal changes fast enough, the 'scope may miss it.
 Doesn't know how the circuit will respond to the signal.
In Circuit Emulators (I.C.E.) $2000-$100,000
(except for Ubicom, Microchip and AVR? at about $200)
 Should allow recording from the point of view of the circuit (so the signal levels and timing don't matter). What you see is what it got (not necessarily what it saw).
 Allows single step and easy setup of multiple breakpoints to stop execution when a set condition occurs. Often supports stack traces and history capture.
Just tells you how the processor saw the signal, not why the signal was seen that way (Was there a spike? Was the signal weak? Is the timing wrong? etc..)
The emulator may respond differently than the production component (screwed up in actual operation, works fine when you plug in the emulator.. hah-hah) (except for Ubicom and the Microchip 16F87x as they build the emulation circuitry into the production chip.)
Many emulators will not correctly support external events like IO port signals and interrupts.
Simulators Free to $1000  Allows testing of basic code and ideas without even needing to have the device.
Can show everything including.
long list. Not real time, not real (simulations are doomed to succeed). Will not catch all the Gotchas.

Also:

Debuggers

Ralph Stickleys' Serial Register Monitor

Development Systems


file: /Techref/tstequip.htm, 5KB, , updated: 2013/7/23 09:51, local time: 2024/11/8 16:44,
TOP NEW HELP FIND: 
3.145.112.217:LOG IN
©2024 PLEASE DON'T RIP! THIS SITE CLOSES OCT 28, 2024 SO LONG AND THANKS FOR ALL THE FISH!

 ©2024 These pages are served without commercial sponsorship. (No popup ads, etc...).Bandwidth abuse increases hosting cost forcing sponsorship or shutdown. This server aggressively defends against automated copying for any reason including offline viewing, duplication, etc... Please respect this requirement and DO NOT RIP THIS SITE. Questions?
Please DO link to this page! Digg it! / MAKE!

<A HREF="http://www.massmind.org/techref/tstequip.htm"> Test Equipment, Debuggers, Development Systems</A>

After you find an appropriate page, you are invited to your to this massmind site! (posts will be visible only to you before review) Just type a nice message (short messages are blocked as spam) in the box and press the Post button. (HTML welcomed, but not the <A tag: Instead, use the link box to link to another page. A tutorial is available Members can login to post directly, become page editors, and be credited for their posts.


Link? Put it here: 
if you want a response, please enter your email address: 
Attn spammers: All posts are reviewed before being made visible to anyone other than the poster.
Did you find what you needed?

 

Welcome to massmind.org!

 

Welcome to www.massmind.org!

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

  .