Fluke 990DSL - Loop Current & Ground Ohms Test; Setting up a Loop Current & Ground Ohms Test

990DSL
Users Guide
4-50
Loop Current & Ground Ohms Test
In the Loop Current and Ground Ohms test, the tester measures and displays
the following parameters on a working POTS line:
•
Loop Current (into 430Ω)
•
Ring-Ground Current (into 430Ω)
•
Ground Ohms (Cable sheath resistance from measurement point to C.O.)
Setting Up a Loop Current & Ground Ohms Test
1. From the POTS Toolbox, select Loop Cur. & Gnd Ω and press
D(
Setups).
The
Setups – Loop Current & Ground Ohms screen is displayed.
2. Enter the desired setup values (see Table 4-12).
Table 4-12. Loop Current & Ground Ohms Setup Parameters
Setup Parameter Setting (default in Bold)
Loop Current Pass Threshold >20 mA (Range = 1 to 100 mA)
R-G Current Pass Threshold >33 mA (Range = 1 to 100 mA)
Ground Ohms Pass Threshold <25 Ω (Range = 0 to 99Ω)