2022-
04
14
Viator USB HART Interface with PowerXpress
Getting Started
6.3
Connecting to a HART Field Device
The interface has an integrated USB cable with a male A plug for connection to the compu-
ter, and it has an integrated 6-foot cable with 2 test clips.
The interface connection to the HART network is transformer isolated and polarity insensi-
tive. Transformer isolation allows you to connect the interface across the load resistor or
across the HART device. Polarity insensitivity means that you may attach either test clip to
either side of the HART device or load resistor.
Abbildung 6.1
Digital multimeter
HART
field
device
Test clips
Modem
PC
HART
handheld
Modem-only
connection
Modem and device
power connection
