Multimeter Tests
Copper and G.fast/VDSL2/ADSL2+ Multi-play Test Set
145
Station Ground
Station Ground
The
Station Ground
test measures and displays the resistance value and
pass/fail status of the ground resistance between the MaxTester and the CO
(Central Office). A provisioned POTS circuit is required for this test to work
properly.
The test uses Tip (A), Ring (B), and Ground (Earth) leads and measures
isolation resistance between the wires and to ground. Any ground should
have the lowest possible value, and for high speed broadband (to
minimize noise and interference), the ground value is better if
5
Ω
. If a
ground value is > 25
Ω
, it may not provide a good path to ground and the
current could injure a person. For values between a few ohms and 25,
there may be a differential with the premises ground potential; and some
noise may couple onto communications circuits creating problems to the
broadband signal.
Depending on where you measure the station ground, check the bonding
lugs on cross-boxes, pedestals, and electronics/remotes, as well as cable
and terminal bonds. These all need to be good quality and tight. If you think
the ground rod/plane is inadequate, please consult your support,
management, or procedures.
The
Station Ground
parameters are as follows:
Current Group
is the current test group name, for
example
Multimeter
.
Current Test
displays the test being measured.
Here you can switch to another
Multimeter
test
from the given list. However, this action will
terminate the ongoing measurement test.
Threshold Settings
button opens a new page that
allows you to set the
Ground Resistance
Threshold
for the test.
Содержание MAX-635G
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