RE: [M]: Still blowing fuses - RS232 port related
| Subject: | RE: [M]: Still blowing fuses - RS232 port related |
| From: | Steve Glazener |
| Date: | Sat Sep 02 09:24:16 2000 |
>----snip----
>Joe,
>
>I think the 1220 field de-rotator draws its power from this plug, along with
>the commands for de-rotating from the serial port. Correct me if Im wrong,
>but I
>think this is the reason for including the 18V power in the plug.
>
>Don
OK, maybe a little more explanation of my exclamation:
Why would you want to put gas & water in the same pipe? Operational power
doesnt belong near circuitry power. Sure, it saves an extra cable being run
from the device to a power supply somewhere... but this is easily remedied.
A mis-wired plug (from the factory or hand-made), and bang! - there goes your
main board.
SG
------------------------------------------------------------------
Steve Glazener, Principal
Pyramid Engineering
seg@pyreng.net
------------------------------------------------------------------
>Joe,
>
>I think the 1220 field de-rotator draws its power from this plug, along with
>the commands for de-rotating from the serial port. Correct me if Im wrong,
>but I
>think this is the reason for including the 18V power in the plug.
>
>Don
OK, maybe a little more explanation of my exclamation:
Why would you want to put gas & water in the same pipe? Operational power
doesnt belong near circuitry power. Sure, it saves an extra cable being run
from the device to a power supply somewhere... but this is easily remedied.
A mis-wired plug (from the factory or hand-made), and bang! - there goes your
main board.
SG
------------------------------------------------------------------
Steve Glazener, Principal
Pyramid Engineering
seg@pyreng.net
------------------------------------------------------------------
