2-Wire Connection; 2-Wire Termination Resistor - Ametek 5100 HD User Manual

3-16 | Model 5100 HD Analyzer

2-Wire Connection

The RS-485 uses a 2-wire connection:
ISOCOM
2W-
2W+

2-Wire Termination Resistor

The 5100 HD is equipped with a termination resistor that can be used for the last
unit on the network. Jumper J7 on the MCU board allows you to place a 120-
Ohm termination resistor into the RS-485 circuit. See the following figure.