New subject: Lots of stuff available.

30 Oct 2003

I am trying to set up a Black Box '20ma loop to serial' converter box on
an existing, known working 20ma loop which currently drives a couple of
20ma terminals.

There is a note in the black box manual that the device won't work on
analog current loop.  Am I correct in assuming that an analog current loop
is one where an analog instrument is sending its 'telemetry' over the
loop?  A 20ma loop terminal obviously would not fit into that category I 
am assuming.

The folks I am working with seem to have tried the obvious.  They only 
want the black box device to receive data so they have hooked on the 
appropriate wires so far no output.  Any obivous gotcha's with this 
technology?

Paul

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Semi OT: 20ma loop troubleshooting