Connection of XMTR-MV to PC running Master Application

The 1750 Ohm resistor can be replaced by a 2-wire transmitter at a polling address greater than XMTR-MV. By default XMTR-MV starts at polling address 0. A transmitter with non-zero polling address could replace the 1750 Ohm resistor.

The purpose of the 1750 Ohm resistor is to prevent the loop current from exceeding the power capacity of the 250 ohm resistor. A high wattage resistor may be used for the 250Ohm resistor to eliminate the 1750 Ohm resistor.

Connection of XMTR-MV to I/O System

Many I/O systems include detection of open circuit and short circuit; therefore the XMTR-MV device simulator must be placed in parallel with an actual transmitter. The connection is made by placing a transmitter at a non-zero address for proper impedance then connecting the XMTR-MV