___  ___
|  \/  |
| .  . |
| |\/| |
| |  | |
\_|  |_/
        
        

 ___   
(  _`\ 
| (_(_)
`\__ \ 
( )_) |
`\____)
       
       

         
         
 #####   
 ##  ##  
 ##  ##  
 ##  ##  
 ##  ##  
         

   ___  
  / _ \ 
 | | | |
 | |_| |
  \__\_\
        

  __  __ 
 |  \/  |
 | |\/| |
 | |  | |
 |_|  |_|
         

IMPORTANT: enter the case-INsensitive alphabetic (no numbers) code AND WRITE SOME SHORT summary of changes (below) if you are saving changes. (not required for previewing changes). Wiki-spamming is not tolerated, will be removed, so it does NOT even show up in history. Spammers go away now.


Visit Preferences to set your user name
Summary of change:
Analog '''oscilloscope''' can be important in several phases of the install, eg. to verify InputTrigger * even though thousands of installs have been completed with DVM only (without oscilloscope), in some cases scope is just essential to see what is going on to diagnose and proceed (without a combinatorial explosion of guess-and-try). ---- '''Sad Scope Story''' An installer from EU agreed to make some installs in USA, during a trip (appr 2 weeks). * he had his scope among the stuff to be packed, but since the '''USA customer told him they have oscilloscope on site''', the scope did not make into the luggage finally ** often redundant parts (like a scope, if available anyway at the destination) in luggages are replaced with other (personal or technical) goods to utilize the weight limits reasonably * The installer made 5 successful installs. * However, during the 6th install (the customer is not the same as the other 5), he ran into '''VR problems''' ** tech support informed him from day 1 that '''scopeshots are required''', otherwise it's a waste of everyone's time. ** the installer communicated that he suspects some wheel related artifact, which, however '''can NOT be verified without the scope''': the customer was repeatedly informed about the scope requirement (which he told was available in the first place) ** however no scope became available during the the installer's visit time frame. ** This obviously caused an immense amount of work for everyone, and no success for that +1 install * after the installer flew back to EU, the customer still didn't have scope for more than a week. ** although it was made clear that diag by scoping is the next step to proceed, the customer decided to replace the wheel (7..14 hours of garage work usually). That did not help, and the customer decided to demand the full device + install fee (but keep the devices, ECU + harness) *** and perhaps also insist on some +$$ compensation for his decision to do the engine mech works, although almost certainly that is not reasonable. There is no liability for consequential damage, but that is consequence of his decision, not the orig ) This is how (the lack of) a 100 USD scope can cause an 1700 USD damage (waste a lot a time). The installer could insist on compensation if the customer informed him "scope is available" which was actually not. However, in practice it is unlikely to worth it, and the customer can cause more damage (eg. by advertising without telling how his actions made the install impossible and causing costs for everyone). We recommended the installer to not insist on the return of harness and ECU (which would be the normal procedure), we grant him an ECU and wires, connectors for the harness (as a "voluntary insurance" to help resolve, and avoid unnecessary further damage, eg. shipping costs, brand damage, ...). Hoping this short '''story helps installers and customers.''' ---- Soundcard is sometimes useful to capture stereo (or even mono) audio, but not a real substitute. ---- '''No need for 20..100MHz scopes... 1Msps is almost always suitable, or even 500ksps. There are some cheap '''DSO138-style''' pocket scopes, and USB scopes also.
Optional: Add document to category:
Wiki formatting: * is Bullet list ** Bullet list subentry ... '''Bold''', ---- is horizontal ruler, <code> preformatted text... </code> See wiki editing HELP for tables and other formatting tips and tricks.