Fluke 154 User Manual page 16

Users Manual
754 DOCUMENTING PROCESS CALIBRATOR
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.
Loop Power
Suppy
Figure 3. Resistor System Diagram
13
TEST DC PWR
– +
+
250 Ω
A B
C
D
+ –
–
HART
Device