26 Jan
2002
26 Jan
'02
11:08 a.m.
--- Tony Duell <ard(a)p850ug1.demon.co.uk> wrote:
^^^^^^^^^^^^^
If that's what I think it is (an in-line adapter with LEDs monitoring the
Wahoo! That _is_ odd.
-ethan
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My standard rule for dealing with an RS232
in-yer-face is to plug
it in without a null modem and see if it works...if it doesn't,
then plug in a null modem.
I either use a traffic light or my magic cable. I built it when I was
16. most important signals), then I call it a Xmas Tree
Yes. Same thing, different name.
Certainly something _everyone_ who works with serial
comms should get.
They're not expensive (about $10 to $20, I guess).
Rat Shack has one for around $14, with 7 bicolor LEDs. The nice ones
have one red and one green LED for each signal (23 or 24) and can
be used to divine strange devices and jumper up a fix.
...it has the
property of magically unhosing serial connections
If it manages to 'unhose' the hardware handshakes on an HP82164
HPIL-RS232 interface I'll be seriously impressed!...
A cable to link 2 82164s has to sawp RTS with DSR and DTR with CTS.