In the world of 4-20mA instrumentation, is there any such thing as a=20
typical or ideal input resistor at the receiver end?

I notice a few diagrams using a 250R res across the Rx input terminals,=20
which seems a default value. To some extent I guess it can be altered to=20
provide the required voltage from the current range.

It seems that I need to specify enough voltage at the Tx end, to=20
overcome both the cable's length and the Rx's Zin. Both these=20
resistances are a little undefined to me at this point.

Any personal experiences about this please?

Regards,
Matt.
--=20
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