Rs-485 (Multi-Drop) Cables; Cabling Considerations In Noisy Electrical Environments - Intermec 4400 User Manual

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RS-485 (Multi-Drop) Cables

Refer to the following manuals for information on Multi-Drop cabling and
connections.
9154 Multi-Drop Line Controller System Manual (Part No. 048517)
9161B Installation Manual (Part No. 049572)

Cabling Considerations in Noisy Electrical Environments

The items listed below create noisy electrical environments that can disrupt
data communications between your host computer and the printer:
Large power transformers
Large electric motors
Arc welders
Motor controllers
Switch gears
Following are several suggestions for reducing the effects of electrical noise if
any of the items listed above are located near the printer. Some
experimentation may be required to eliminate the problems. If you need help,
ask your Intermec representative for assistance.
Always use shielded cable. Connect the cable shield to the metal backshells
on the cable connectors and fasten the connectors to the serial ports using
screws.
Install ferrite cable clamps.
Connect the printer chassis ground to the building ground. The chassis
ground is located on the ground pin of the printer power cord.
C o d e 3 9
Installing the Printer
2
2-11