Telco KE2500, Operating Manual, Page: 12 / 24

LCL 1 MHz
Longitudial Conversion Loss
Date / Time
51,78 dB
f: 1,00 MHz
min/max
min: 50,18 dB max: 56,21 dB
1.6 Capacity balanced
Determination of capacities of the A and B wires, A wire to earth
and B wire to earth, the resulting cable length and the symmetry
values. Under CU, the set cable parameter is displayed.
Measuring method
See Capacity. The measuring points are automatically tested in
series. The result can be displayed as a QR code (key
F3 , see
page 14) or stored for later evaluation (key F4 ).
For more information, see 7. Allow USB Access on page 20
1.7 Ground return resistance
Here the resistance of the ground-return is measured, for the
evaluation of defective or missing shields or corroded terminals.
Measuring method
Connect the wires to be measured and the shield of the cable.
Select the earthing resistance mode and press SEL. The
measurement is then started automatically. The display shows
the cable parameter used. Measurement results are displayed
in Ohms.
With
F1 , the min / max values can be switched on and off, the
absolute value is not necessarily meaningful, but high
fluctuations indicate errors.
1.8 LCL 1 MHz* (Longitudial Conversion Loss)
In the case of the asymmetry measurement (LCL), the balance
between the A wire to ground is compared with that of the B wire
to ground. For this purpose, a signal with 1 MHz is fed
symmetrically to the wires in relation to the ground. The voltage
measured at A + B is the indicator of the unbalance. The higher
the dB value, the lower the unbalance.
With
F1 , the min / max values can be displayed and dimmed to
view fluctuations.
Measuring method
Connect the wires to be measured and the shield of the cable.
Select the operating mode
LCL 1 MHz and press SEL . The
measurement is then started automatically.
* LCL Measurement according to ITU G.117
Operating Manual
KE2500
Telco Multimeter
KURTH ELECTRONIC www.kurthelectronic.de info@kurthelectronic.de
12
Capacity balanced
Date / Time
Save
A-B A-GND B-GND
C 1.6 nF 1.9 nF 1.9 nF
L(C) 38.09 m
Sym 0.0 % 0.000nF
CU Basic V/2=100us 0.6mm C 0.042
Ground return resistance
Basic V/2=100us 0.6mm C 0.042nF
Date / Time
5,4
W
min/max
On
On
Off
On
Off
Save
Stop
min: 3,1
W
max: 5,6
W
QR-Code
On