For mass production, which is the good way to trigger test event?

[Boki]

Hi All,
For mass production, I have to trigger product going to test
mode, is that OK if user know the trigger method ?

Best regards,
Boki.

 

[martin griffith]

Hi All,
For mass production, I have to trigger product going to test
mode, is that OK if user know the trigger method ?

Best regards,
Boki.

Please Boki, dont be so cryptic with your messages, a bit more
information would be helpful for those who cannot read minds



martin

"Wales is a big welsh-shaped rain collection device"

 

[Guy Macon]

For mass production, I have to trigger product going to test
mode, is that OK if user know the trigger method ?

My experience is with mass production of toys, VCRs etc, other
manufactured in China.

The usual method is to hold down some combination of keys during
power-up.

As for letting the user know the method, it depends on the product.
For a toy, don't confuse tyhe user with test modes. For an
oscilloscope or calculator, document the self-test mode.

If you are using automated testing, consider using boundary-scan
JTAG testing.

 

[Paul Hovnanian P.E.]

Hi All,
For mass production, I have to trigger product going to test
mode, is that OK if user know the trigger method ?

Best regards,
Boki.

That depends on what the consequences of triggering test mode is.

On some cell phones, their maintenance mode can be used to eavesdrop on
other conversations or mess up the local cell traffic.

The French lost an Arriane booster when its avionics unintentionally
went into test mode.

Otherwise, it could be convenient for customers to diagnose product
problems if they can run some tests without having to send the product
in.

 

[Mac]

Hi All,
For mass production, I have to trigger product going to test
mode, is that OK if user know the trigger method ?

Best regards,
Boki.

The only thing I can tell you is that if the product is popular, and if
it is possible to do interesting things by triggering test mode, then
users will probably find out how to do it.

I'm not sure this is helpful, but I hope it is. ;-)

--Mac

 

[Tim Shoppa]

Please Boki, dont be so cryptic with your messages, a bit

more information would be helpful for those who
cannot read minds

Compared to previous Boki posts, this one was down-to-earth, clear, and
direct.

At times I'm 90% convinced that "Boki" is really an automated program
producing random technical-sounding questions.

Tim.

 

[John Woodgate]

I read in sci.electronics.design that Paul Hovnanian P.E.
'For mass production, which is the good way to trigger test event?', on
Thu, 14 Apr 2005:

That depends on what the consequences of triggering test mode is.

For some TVs, you'd think it would launch World War 3. Ridiculously
complex sequences of button-pushing, on the set as well as on the
remote.

 

[Fred Bartoli]

I read in sci.electronics.design that Paul Hovnanian P.E.
'For mass production, which is the good way to trigger test event?', on
Thu, 14 Apr 2005:


For some TVs, you'd think it would launch World War 3. Ridiculously
complex sequences of button-pushing, on the set as well as on the
remote.

I've recently seen that on some TVs the test mode allow you to set some
parameters like, CRT max current, colors gain...

I guess it's better for this to be well hidden.

 

[Boki]

Hi,
Thank you very much for valuable comment.

1. It already define one combination keys for upgrade firmware, I worried
user can easily trigger test mode if we define another combination keys (
due to only few keys. )
2. I am considering sequence keys, but I worried that costs a longer trigger
time.
3. Confusing on document it or not, consumer goods. Afraid of user
complicated/confusing.

I think I prefer document it and run a self-demo

Best regards,
Boki.

 

[Boki]

Compared to previous Boki posts, this one was down-to-earth, clear, and
direct.

Agree.

At times I'm 90% convinced that "Boki" is really an automated program
producing random technical-sounding questions.
Disagree.


Tim.

 

[Boki]

Hi,

Great help, I have the same thinking about yours.

Test is demo, demo is test.

Best regards,
Boki.

 

[Rich Grise]

I've recently seen that on some TVs the test mode allow you to set some
parameters like, CRT max current, colors gain...

I guess it's better for this to be well hidden.

Does anybody know if an IBM P260 monitor has some secret test code to
set the black background? I used to do this to video game monitors -
it's one of the pots on the neck board. Well, I opened the case on
my monitor, and there are no pots at all. )-; So I have a washed-out-
looking monitor. )-; All I can find in the menus are bright/contrast,
and all the standard geometry controls.

Thanks,
Rich

 

[Tim Shoppa]

At times I'm 90% convinced that "Boki" is really an

Disagree.

I'm thinking particularly of your classic "What kind of modulator do we
need for next technology life?" thread . No non-manager human would
ever be able to phrase such a question...

Tim.

 

[martin griffith]

The Turing Test?

martin

"Wales is a big welsh-shaped rain collection device"

 

[Fred Bartoli]

I'm thinking particularly of your classic "What kind of modulator do we
need for next technology life?" thread . No non-manager human would
ever be able to phrase such a question...

Maybe he's a manager

 

[martin griffith]

The only thing I can tell you is that if the product is popular, and if
it is possible to do interesting things by triggering test mode, then
users will probably find out how to do it.

I'm not sure this is helpful, but I hope it is. ;-)

--Mac

One thing i did a long time ago on an 8051 micro.
When a specific button was held down during powerup it went into a
service routine. The LCD showed "Keyboard Error" if any key was held
down during powerup.
I was not using the UART, so I normally drove a led, in normal mode
with the uart pin.
But in the test mode it became an optical UART out, I used a
photosensor to couple to a terminal.


martin

"Wales is a big welsh-shaped rain collection device"