2.2 Loop Analysis with CO
The loop analysis is a measurement technique that
summarizes and automates the most important measure-
ments so the test procedures are simplified and accelerated.
The loop analysis with CO refers to a recently released line
that must be connected to the central office, however,
separated from the central office for some measurements.
This will be passed in clear-screen instructions to the user.
Measurement method
Connect the wires to be measured and the shield of the cable.
Select
Loop analysis with CO
and press
SEL
. The
measurement starts automatically thereafter.
Follow the coming instructions shown in the display.
First, for every measuring point (A-B, A-GND, B-GND)
successively the currents for DC and AC identified in
connection to the central office, followed by the measurement
of the DC and AC voltages, also in connection to the central
office. Now, the line has to be separated from the central
office, and the measurements of current and voltage is
repeated. Then place a loop A-B, followed by the measure-
ments of resistance and the cable length as a result of
resistance. Resistance measurements, and the resultant of
the resistive length, capacitance, the length resulting from the
capacitance and the end of the insulation resistance. Then a
loop A-B-GND has to be insert, measurements to the
capacitance and the cable length as a result of capacitance,
as well as the insulation resistance follows.
With
F4
Stop, the measurement can be frozen and then left
completely with
ESC
.
After the measurement has been completed, a QR code with
the measured values can be generated and displayed with
F3
QR code. This can then simply be read in with a QR
application.
ESC
exits the view and test.
Alternatively, the measured values can also be stored as a
CSV file under
F4
for later evaluation.
For more information, see 7.
Allow USB Access
on page 20.
Loop Analysis with CO
Loop Analysis with CO
Date / Time
Date / Time
Loop Analysis with CO
Loop A/B/GND
Date / Time
A-B
A-GND
B-GND
ESC
"
Continue
SEL
"
Remote
Save
Operating Manual
Telco Multimeter
KE2500
KURTH ELECTRONIC www.kurthelectronic.de [email protected]
15
Example of Screen dialog
QR-Code
Stop
A-B
A-GND
B-GND
I= CO
0.1 mA
0.1 mA
0.1 mA
I~ CO
0.5 mA
0.4 mA
0.4 mA
U= CO
0.0 V
0.0 V
0.0 V
U~ CO
0.0 V
0.0 V
0.0 V
I=
0.1 mA
0.1 mA
0.1 mA
I~
0.5 mA
0.4 mA
0.4 mA
U=
0.0 V
0.0 V
0.0 V
U~
0.0 V
0.0 V
0.0 V
R
>MAX
>MAX
>MAX
L(R)=
>MAX
R
>MAX
>MAX
>MAX
L(R)=
>MAX
C
0.0 nF
0.0 nF
0.0 nF
L(C)=
0.000 m
Riso
>20G
>20G
>20G