S4 Question...

[theILLUMINATEDfrog]

what does the "Rev G" on the barrel of the S4s refer to? Just curious.

 

[Les]

Probably "Revision G". I guess it's possible that the lens barrel of a fixed focus Source Four has had 6 revisions since introduced (assuming the first design was Rev A).

Just an educated guess.

 

[icewolf08]

Good guess, that is the truth. It is just the revission number of the lens tube.

 

[gafftaper]

There have been multiple revisions on the burner end of the fixture as well.

Does someone from ETC want to give us a little history lesson?

 

[derekleffew]

...Perhaps someone at ETC can fill in the gaps and add dates to these iterations of the Source4™ ERS. I know there also have been several lens tube modifications over the years. The timeline at ETC | Explore the Source Four | History is somewhat lacking in the minutiae of details. ...

There have been many thousands of small improvements done over the 15 year life of S4, and they continue. They are not really collected in one place for dissemination. Good thing, because they are mostly boring manufacturing improvements or optical prescription changes!

ST

One wonders what they are hiding? The truth is out there.

 

[church]

"One wonders what they are hiding? The truth is out there."

Derek, the truth will be very boring there will be small errors that have been corrected, small improvements for performance, small improvements to improve manufacturability, improvements to reduce cost, improvements to simplify maintenance, improvements to replace suppliers etc. etc.

No design is ever perfect and it is only when you manufacture things in quantity and receive feedback from users over an extended period that you will find some of the small things that drive people nuts.

Engineering Change Management Systems require the smallest of change to be documented and results in a revision change. Sometimes you can save really simple changes and only process a group of items in one revision. Sometimes the nature of the required change is such that it must be implemented immeadiately. Also even correcting a spelling error on a drawing requires a formal drawing change.

 

[epimetheus]

Generally speaking, you wouldn't bump the revision for something small. A change that requires a revision in the manufacturing process is normally not just a small change. It has to be important enough to warrant the cost of changing the process. If there's not much cost associated with making the change, then it's a win/win situation, but this is not normally the case.