9
5 Troubleshooting: Fault Condition Display
The RDM172 fault condition screen provides an indication of
communication problems, should any occur.
Reasons for a communication fault could be:
•
Instrument switched off
•
Communication cable disconnected
•
Instrument communication setup changed
•
RDM172 communication setup changed
Press to check or alter the RDM172 adjustment and scroll to
communication options.
6 Communications
NOTE
Where an RS-232/RS-422 converter is used, R1 is not applicable
since it is built in to the converter.
Use a shielded, 0.33 mm
2
/22 AWG twisted pair cable for each
communication link; terminate the ends of multi-drop line with 200-500
Ohm resistors. Connect the cable shield to the ground input.
ENTER
diSP
Con.E
