AccuEnergy AcuRev 1200 Series, User Manual

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4. "T" type connection topology should be avoided. This means no new branches
except from the starting point.
5. Keep communication cables away as much as possible from sources of electrical
noise. When several devices are connected (daisy chain) to the same long communication
line, an anti-signal reflecting resistor (typical value 120-300 ohm, 0.25W) is often used at
the end of the circuit (the last meter of the chain) if the communication quality is distorted.
6. Use RS232/RS485 or USB/RS485 converter with optical isolated output and surge
protection.
7. An infrared port is also available in the Display Module, which supports meter
reading.