Product Manual

14
Users Manual
Figure 2. System Diagram with Fluke 754 as Loop Power Supply
If a suitable load resistance is not available, place a 250 Ω resistor in series
with the Device power supply. Connect the Modem across the loop load
resistor (A-B) or across the Device terminals (C-D). See Figure 3.
Figure 3. Resistor System Diagram
754
DOCUMENTING PROCESS CALIBRATOR
TEST DC PWR
+–+–
–+
Loop Power
Suppy
HART
Device
250 Ω
B
C
D
A