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RECOMMENDED CIRCUIT CONNECTIONS
Recommended line driver and line receiver for RS-232C
signal level settings., (As viewed from the host com-
puter.)
Figure 4. RS-232C
MC 1499L 75199 or 0quivMnt
Recommended line interface circuit for 20 mA Current
Loop signal level settings. (As viewed from the host
computer .)
Note
The value of "R" should be selected so that the loop
current is set between 10 and 20 mA. The u+V" should
be 3v to 24v.
22
I
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