User's Manual

INDUSTRIAL 4G LTE CELLULAR ROUTER - UM V1.1.8
18
DIP Switch
Pull High (510 ohm) /
Pull Low (510 ohm) Bias Resistor
SW 1 (Pull Low)
SW 2 (Pull High)
Enable
ON
ON
Disable (Default)
OFF
OFF
Termination Resistor (120 ohm)
SW 3
Enable
ON
Disable (Default)
OFF
A built-in 120 ohm terminal resistor can be activated by DIP switch.
Pull high or Pull low resistor adjustments are also available. It improves
the communication on
RS-485 networks for specific application.
Switch 1 and 2 set the pull high/low resistor
Switch 3 enables or disables the termination resistor