| ??? 06/09/10 06:25 Modified: 06/09/10 06:54 Read: times Msg Score: +1 +1 Good Answer/Helpful |
#176542 - It depends upon the application Responding to: ???'s previous message |
Chico Magalhães said:
It is a local test device, so no problem to have a "more complicated" conector. So you see how it was important to know this in the first place in order to fully specify the code that you require? .. it is JUST an extra pin in the pin header. In some applications, that can be a very significant addition! Looks like the option 1 needs a transistor or mosfet to hard switch positive when the sensor is making the measure Indeed - so, again, you see how it was important to know this in the first place in order to fully specify the code that you require? so the "hardware" part is not so simple. True - for the driver hardware. However, there are also other reasons why you might use the "hard switch" - so it may not be an additional complication. In my opinion, it's way better the option 2, what do you think? The switch is only required once, but the additional wiring, etc, would be required for every single sensor - in a large network, that could be a significant overhead. So, for a very large network, "parasite" power may be the "way better" choice. As with most things in Engineering, it is a compromise; there is no one single solution that is "way better" in all situations - the pros & cons will stack-up differently in different applications with different specific requirements. Since your specific requirement is to test the assemblies, don't you think that it would be a good idea for your test to verify that the assembly does actually work in Both modes...? |
