KE3700_CT-768x768
KE3700_CT-768x768
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KE3550 Access and Loop Tester (xDSL/ISDN/Copper/+more)

KE3700 CT Telco Loop Qualifier Specialized for qualification of telecommunications applications up to 31 MHz. 

Fault analysis of AC/DC applications with for telephone 2-wire lines designed multimeter functions. Precise fault detection and localisation with the TDR function.

Line Multimeter

  • Voltage AC/DC incl. AC frequency
  • Resistance, line resistance and resistance line balanced
  • Insulation and leakage
  • Capacitance and capacitance balanced
  • Ground resistance
  • LCL Balance @ 1 MHz
  • NEXT @ 1 MHz
  • PPA and signature detection
  • Current AC/DC

31 MHz HF Line Measurements

  • Spectrum analysis, impedance and return loss (graphical)
  • LCL balance and NEXT
  • Receive signal (graphical) and signal level transmitter
  • Wideband and impulsive noise

Cable Length Measurement

  • Distance to short (resistance) and distance to opens (capacitance)
  • TDR function with graphical cable fault detection
  • NEW: xTalk measurement

Automated Line Measurements

  • Configurable test scenarios
  • With or without far end devices (e.g. KE905)

Cable Type Database

  • Editable cable parameters
  • Database with hundreds of cable types

The Kurth Electronic Copper Testing (KECT) module with its improved interference immunity is the ideal measuring tool for technicians testing, troubleshooting and qualifying performance parameters of copper pairs of traditional and modern broadband access systems.
As an optional module for the powerful xDSL MULTITEST test equipment family the Copper Test module allows an accurate analysis and a complete overview of transmission parameters as well as the physical assessment of copper lines under test.

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