Telco KE2500, Руководство по эксплуатации, Страница: 10 / 24

Operating Manual
KE2500
Telco Multimeter
KURTH ELECTRONIC www.kurthelectronic.de info@kurthelectronic.de
10
1.2 Resistance line
The purpose of this measurement is the determination of the
loop resistance.
Measuring method
Connect the wires to be measured and the shield of the cable.
The far end of the pair of wires to be measured must be short-
circuited, work with a 2nd person or with the KE90X Remote
Unit. Select the
Resistance line mode and press SEL . The
measurement is then started automatically. On top of the
dispaly the used cable is shown. The measuring result is
shown in ohms and the cable length in meters.
Under
F1 , you can show or hide the min / max values. With F2
Probe you can select the measuring point. The measurement
points can be selected, e.g. between two wires of a wire pair
(A-B) and between a wire and ground (A-GND, B-GND).
Please ensure that the cable is voltage-free before
measurement!
1.3 Resistance line balanced
Determination of the loop resistors A-B and the resistors A-
Gnd, B-Gnd. The cable length, the earth line resistance, the
resistance difference (WU) and the maximum resistance
difference (WUmax *) as well as the unbalance are displayed.
The selected cable parameter is displayed at the bottom of the
table.
Autom. Measuring procedures (only possible with
remote KE90X and TX915)
see Resistance line .
Please ensure that the cable is voltage-free before
measurement!
The measuring points are automatically
tested in sequence with the aid of the remote measuring
devices. 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.
* The maximum permissible WU depends on the length and diameter
of the cable.
Resistance line
Basic V/2=100us 0.6mm C 0.042nF
Date / Time
5,4 Ω
43,1 m
min: 5,3
W
max: 5,5 Ω
Probe
A - B
A - B
A - GND
B - GND
min/max
On
Off
On
Resistance line balanced
Date / Time
Save
A-B Ra Rb
R 5.571 Ohm 2.892 Ohm 2.742 Ohm
L(R) 43.80 m
RE 2.664 Ohm
WU 0.150 Ohm
WUmax 0.215 Ohm
Unsym
5.2
%
CU Basic V/2=100us 0.6mm C 0.042
connect to remote
please wait ...
Save
Stop
QR-Code