KE3700 CT for DC and AC noise analysis with digital multimeter function, TDR function for cable troubleshooting and measurements up to 31 MHz. With filter for ADSL, VDSL and SHDSL.
KE3700 CT Telco Loop Qualifier is a line qualifier up to 31 MHz for interference analysis in the DC and AC range with Telcomultimeter function, TDR for cable troubleshooting and measurements for qualification up to 31 MHz. The device allows the qualification of a copper twisted pair on 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.
Manual and automatable test sequences in combination with the KE905 Remote electronic remote line switch are available to the user to simplify measurement tasks. Bluetooth, QR code and the supplied KE Manager software allow flexible use with regard to documentation of measurement results or data transmission to electronic order processing systems.
The various xDSL systems (Digital Subscriber Line Systems) available on the market have the task of meeting the requirements of fast data transmission for fast Internet access, remote LAN access, interactive media applications, etc. The system can also be used for the transmission of data to other electronic order processing systems. The "x" in the name xDSL indicates the different types of DSL technologies that use conventional copper lines for fast data transmission. The xDSL modems use higher frequencies and can therefore achieve a higher data transmission speed, although they are the same wire pairs used for analog telephony (POTS) and ISDN.
The main advantage of xDSL is the elimination of installation costs for new cables. The maximum allowed cable length and the maximum achievable data transmission speed depend on the characteristics of the cable. Before installing an xDSL modem, check that the properties and quality of the selected wire pair meet the requirements of the intended system.
KE3700 CT– Features
- Error detection with Telco Multimeter functions
- Measurement of all parameters required for the qualification of subscriber lines from ADSL to VDSL2
- Automatic test programs give detailed measurement results
- Parameter editor for changing system and cable parameters
- Interface for data transmission to a PC
- Fault location with TDR up to 6 km
- Remote switching with the optional KE905 remote unit
Measuring modes DMM
- Voltage
- isolation
- resistor
- loop resistance
- loop impedance symmetry
- capacity
- capacitance symmetry
- LCL at 1 MHz
- Automatic line analysis (individually configurable)
- lead resistance
- stream
- Signature and PPE recognition (Telekom)
Measurement modes Qualification
- impedance
- return loss
- Unbalanced attenuation (LCL)
- NEXT
- gauge
- spectrum analysis
- broadband noise
TDR
- Finds cable faults such as short circuit, touch, interruption, branch, bad splice, water ingress, lightning strikes, bruises, etc.
- The maximum verifiable cable length for telecommunication cables is up to 6 km, depending on the wire cross-section.
| 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 |
| KE3700 CT Data Sheet |  2.30 MB |
| Kurth Electronic Program 2019 | 16.62 MB |
