KE3700 CT Telco Loop Qualifier

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2 in 1: Cable fault meter and line qualifier!

The KE3700 CT is the tool for fault analysis in the DC and AC range with cable multimeter function incl. resistance fault localisation, TDR function for cable fault location and measurements for line qualification up to 31 MHz.

  • Spectrum analysis, impedance, return loss, LCL unbalance loss and NEXT, input level (graph.), Signal level transmitter, Broadband and impulse noise
  • Resistance and capacitance, symmetry
  • Voltage AC/DC incl. AC frequency
  • Insulation measurement with 8 V or 100 V
  • RFL resistance fault localization according to Murray and Küpfmüller
  • TDR identifies and localizes cable faults, with xTalk measurements
  • Automatable, freely editiable test procedures
  • Simplification and acceleration of the measuring application through the KE905 Remote included in the package
  • Storage and evaluation of measurement data
SKU: 0.49840-CT Category:

The device allows the qualification of a copper wire pair to the service to be transmitted. Predefined or manually editable filters are available for xDSL or telephony services in the frequency range up to 31 MHz.

To simplify measurement tasks, manual and automatable test sequences are available to the user in combination with the electronic remote line switch KE905 Remote, which is included in the scope of delivery of the KE3700 CT.

Measurement results can be stored on a USB storage device, to electronic order processing systems via QR code or to the included KE Manager PC software for data evaluation and the creation of measurement protocols in PDF form.

The security glass protects the screen from impact and ensures good readability even in sunlight.

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KE905 Remote Unit
Housing Heavy duty ABS plastic weather-resistant design
Battery cover equipped with captive screws
4 test cord receptacles for alligator-to-TF cords
Resistant Mylar front foil with short operation instructions
Test cords 2 special test cords for testing up to 31 MHz
Insertion loss: 0 to 30 MHz < 0,5 dB
Crosstalk: -78 to -56 dB
Power source 9 V Alkaline battery, typical life 200 h
Overvoltage protection Up to 160 V AC/DC
Dimensions 160 x 95 x 35 mm
Weight 290 g with battery
KECT & KE3700 CT: 31 MHz Line Qualification
General Frequency range: 4,312 kHz up to 31 MHz manual entry or xDSL Bandwith
Input impedance 100 Ω, 120 Ω
Velocity of propagation 0,33 to 3,33 10 mV DC
Cable parameter diameter 0,1 to 1,6 mm
Impedance Output value: 0 ... 1000 Ω, graphical
Resolution / Accuracy: 0,1 Ω / ± 5 % or ± 5 Ω
Return Loss Output value: 0 ... 100 dB, graphical
Resolution / Accuracy: 0,01 dB / ± 1 dB
LCL (Balance) Output value: 0 ... 110 dB, graphical
Resolution / Accuracy at 2 MHz / 10 MHz / 30 MHz: 0,01 dB / ± 0,5 dB / ± 2 dB / ± 5 dB
NEXT Output value: 0 ... 130 dB, graphical
Resolution / Accuracy: 0,01 dB / ± 0,5 dB
Receive Level (high impedance) Output value: -100 ... 10 dBm, graphical
Resolution / Accuracy: 0,01 dBm / ± 1 dBm
Spectrum (high impedance) Output value: -150 ... 10 dBm or -150 ... 10 dBm/Hz, graphical
Resolution / Accuracy: 0,01 dBm / 0,01 dBm/Hz / ± 1 dBm
Wideband Noise Filter: ADSL 1,2 to 1,5 MHz / ADSL 2+ 3,0 MHz / VDSL2 8abcd to 9,0 MHz / VDSL2 12ab to 13,0 MHz / VDSL2 17a to 19,0 MHz / VDSL2 30a to 31,0 MHz
Output value: dBm, numeric
Resolution / Accuracy: 0,01 dBm / ± 1 dBm
Impulse Noise Pulse duration:> 500 µs
Threshold : 0,1 mV to 25,4 mV / -20 to -59,9 dB
Resolution: 0,1 mV / 0,1 dB
Other displayed values: Runtime in seconds / Counter of noise pulses
Measuring time: unlimited
KECT & KE3700 CT: General Information
Connections 2 x 4 mm banana jacks (Line1 and Line2) for 3 pole for TF plug, non-contact protection
RJ45 100 Mb Management Port
Operating temperature 0 °C to +50 °C
Storage temperature -10 °C to +60 °C
Humidity Up to 93%, non-condensing
KECT & KE3700 CT: Line Multimeter
General Overload protection with switching over to voltage measurement
Test lead compensation
Probing between A-B, A-GND and B-GND
Min-Max-Values
DC Voltage Measuring range: 0 to 280 V DC
Resolution / Accuracy up to 6 V: 1 mV DC / ± 0,5 % + 2 digits
Resolution / Accuracy up to 60 V: 10 mV DC / ± 0,5 % + 1 digit
Resolution / Accuracy up to 280 V: 100 mV DC / ± 0,5 % + 1 digit
Overload protection: 300 V DC
DC Current Measuring range: 0 to 700 mA DC
Resolution / Accuracy: 0,1 mA / ±0,5% + 3 digits
Overload protection: 950 mA
AC Voltage Measuring range: 0 to 200 V AC sinusoidal
Resolution / Accuracy up to 6 V: 1 mV DC / ± 1,5 % + 3 digits
Resolution / Accuracy up to 60 V: 10 mV DC / ± 1,5 % + 3 digits
Resolution / Accuracy up to 280 V: 100 mV DC / ± 1,5 % + 3 digits
Overload protection: 300 V AC sinusoidal
AC Frequency Measuring range: 15 Hz to 60 kHz
Resolution / Accuracy up to 600 Hz: 0,01 Hz / ± 0,5 % + 1 digit
Resolution / Accuracy up to 6 kHz: 0,1 Hz / ± 0,5 % + 1 digit
Resolution / Accuracy up to 60 kHz: 1 Hz / ± 0,5 % + 1 digit
AC Current Measuring range: 0 to 500 mA AC
Resolution / Accuracy: 0,1 mA/ ±1,5% + 5 digits
Overload protection: 950 mA
Isolation / Resistance (stress / leakage) Measuring range: 1 kΩ to 50 MΩ at 8 V test voltage / 60 kΩ to 2 (5) GΩ at 100 V test voltage
Resolution / Accuracy up to 30 MΩ: 10 kΩ / ± 2 % + 50 kΩ
Resolution / Accuracy up to 300 MΩ: 100 kΩ / ± 2 % + 500 kΩ
Resolution / Accuracy up to 3 GΩ: 1 MΩ / ± 2 % + 5 MΩ
Resistance Loop Measuring range: 0 to 3 kΩ with DC line voltage suppression
Resolution / Accuracy: 100 mΩ / ±0,5% + 0,5 Ω
Loop length (Short) calculation: 0,1 m to > 20 km depending on cable parameter settings
Loop length resolution / Accuracy: 0,1 m / ±1%
Resistance Measuring range: 0 to 2 MΩ
Resolution / Accuracy: 4 digits / ±1%
Capacitance Measuring range: 0 to 3 µF (10 µF)
Resolution / Accuracy up to 30 nF: 10 pF / ±1% + 100 pF
Resolution / Accuracy up to 300 nF: 100 pF / ±1% + 500 pF
Resolution / Accuracy up to 3 µF: 1 nF / ±1,5% + 5 nF
Opens calculation: 0,1 m to > 20 km depending on cable parameter settings
Opens resolution / Accuracy up to 100 m: 1 mm / ±1%
Opens resolution / Accuracy up to 1 km: 0,1 m / ±1%
Opens resolution / Accuracy > 1 km: 1 m / ±2%
Ground Return Resistance (Station Ground) Measuring range: 0 to 2 MΩ
Resolution / Accuracy: 4 digits / ±1%
LCL Balance @ 1 MHz Measuring range: 0,01 to 90 dB
Resolution / Accuracy: 0,01 dB / ±0,5 dB
NEXT @ 1 MHz Measuring range: 00,1 to 125 dB
Resolution / Accuracy: 0,01 and 0,1 dB / ±0,5 dB
KECT & KE3700 CT: TDR Function
Measuring range 4 m to 6.000 m
Measurement / Display resolutio 6,26 ns or 0,1 m
Pulse width 12,5 ns to 2500 ns
Analog gain 0 dB to 56 dB in 10 dB steps
Zoom max. 10 x
KECT & KE3700 CT
KE3700 CT Data Sheet 2.31 MB

Product Catalogue

Kurth Electronic catalogue 13.63 MB