User guide

40 Chapter 8 Reference
Digi One SP Safety
• UL 60950 3
rd
Ed.
• EN 60950 (European Union)
• CSA C22.2, No. 60950 3
rd
Ed. (Canada)
Device Server EIA 232/422/485 Switch Settings
Important Safety Information
To avoid contact with electrical current:
Never install electrical wiring during an electrical storm.
To reduce the risk of fire, use only 26 AWG or larger telecommunication
line cord.
Never install telephone jacks in wet locations unless that jack is specifically
designed for wet locations.
Use caution when installing or modifying telephone lines.
Use a screwdriver and other tools with insulated handles.
You and those around you should wear safety glasses or goggles.
Do not place telephone wiring or connections in any conduit, outlet or
junction box containing electrical wiring.
Installation of inside wire may bring you close to electrical wire, conduit,
terminals and other electrical facilities. Extreme caution must be used to
avoid electrical shock from such facilities. You must avoid contact with all
Function
Switch Settings
1 2 3 4
EIA-232 Up Down Down Down
EIA-422/485 Full-
duplex
Down Up Down If up, termination.
If down,
no termination
EIA-485 half-duplex Down Down Up
Do not work on your telephone wiring if you wear a
pacemaker. Telephone lines carry electrical
current.