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Cable Parameter Tester

Cable Parameter Tester
Cable Parameter Tester
Product Code : KE-LQ20
Product Description

Cable Parameter Tester

The xDSL LINE QUALIFIER KE-LQ20 is a hand held battery operated, multifunction measuring instrument, intended for pre-qualification, installation, fault location and maintenance of balanced copper pairs. For fault location DC-AC bridge, TDR  and basic cable parameter measuring all in one unit.


To qualify a pair, end-to-end measurements with two instruments have to be made. This can be done by using two KE-LQ20 or one in conjunction with the Slave unit. Just one person, thanks to the communication between the two instruments, can perform such measurements. Operation is made extremely simple by means of pre-defined automatic test sequences.Tolerance masks of cable parameters as Loss, LCL, NEXT, FEXT, Impedance, Return Loss and the principal system parameters are pre-programmed for 38 different xDSL systems.


The operator can create new template sets with the PARAMETER EDITOR facility of KE-LQ20 on the spot of the measurement. Template sets can be downloaded from PC as well.When the automatic test sequence is ready, KE-LQ20 provides an immediate PASS/FAIL indication by comparing the test results with the tolerance masks and the required data rate with the calculated theoretically achievable rate. Detailed test results are available in graphic and numeric forms. In case of FAIL indication the reason of failure is marked with asterisks. 


Hardware and Software Options


Download Datasheet

Automatic Measurements with two instruments
Loss
Frequency response
Weighted noise
Spectrum
Signal-to-noise ratio
Achievable bit rate calculation
Longitudinal balance
Return loss
Impedance
Near-end cross talk
Far-end cross talk

Manual Modes
Transmitting
Receiving
Insertion loss
Frequency response
Near-end cross talk
Longitudinal balance
Impedance
Return loss
Weighted noise
Spectrum
Impulse noise
Load Coil Detection
Micro interruption (Optional)

Fault Location with TDR
Single pair test
Pair comparison
XTALK point location
Before and after¢ comparison by memory

Measurements with BRIDGE option Basic cable tests
AC/DC voltage
Loop resistance
Resistance difference
Insulation resistance
Mutual capacitance
Load Coil Detection
 Cable temperature
Leakage Location with DC Bridge
Murray loop method
Three Point method
 Improved Küpfmüller method Break Location with AC Bridge
Break
Break and leakage

Basic Cable Tests with DMM option
DC voltage
DC current
Loop resistance
Insulation resistance

Preprogrammed Parameter Sets
ADSL OVER POTS, ITUT G.992.1
EC: 6 MBPS(2M1), 4 MBPS(2M2), 2 MBPS(2M3) FDD: 6 MBPS(1M1), 4 MBPS(1M2), 2 MBPS(1M3) ADSL OVER POTS, ETSI TS 101 388 V1.3.1 EC: 6 MBPS, 4 MBPS, 2 MBPS FDD: 6 MBPS, 4 MBPS, 2 MBPS ADSL OVER ISDN, ITUT G.992.1 EC: 6 MBPS, 4 MBPS, 2 MBPS ADSL OVER ISDN, ETSI TS 101 388 V1.3.1 EC: 6 MBPS, 4 MBPS, 2 MBPS FDD: 6 MBPS, 4 MBPS, 2 MBPS ADSL SPLITTERLESS, ITUT G.992.2 EC: 1.5 MBPS (G-LITE)
FDD: 1.5 MBPS (G-LITE R.XTALK) HDSL, ITUT G.991.1
1 PAIR 2B1Q/CAP, 2 PAIR 2B1Q/CAP SHDSL, ITUT G.991.2 (16TC PAM) 256, 512, 1024, 1536, 2048, 2304KBPS ITU-T VOICE FREQUENCY MODEMS
2.4 KBPS(V26), 56 KBPS(V92), Fax14.4KBPS(V17) ISDN
ITU-T G.962 Basic Rate, ETSI ETR080 Primary Rate

General Specifications
Power supply
Internal rechargeable NIMH battery pack
Operation time approx. 8 hours
  (without backlight)
Charging
(Without taking the battery pack out)
From 230V mains  with mains adapter
From 12V car battery with car adapter
Fast charging time less than 3 hours
Battery management
Battery level indication  provided
Automatic power off provided
Automatic backlight off  provided
Protection against deep discharging  provided
Regenerating charging process  provided The battery pack can be replaced by the user
Display 320 x 240 LCD with backlight
Serial interface  RS232C
Line connectors 2 pcs of 3 pol CF sockets
Ambient temperature range Operating -10 to +50Æ’C
Storage and transport -20 to +70Æ’C
Dimensions 224 x 160 x 44 mm
Weight  approx. 1.5 kg


Transmitter
Impedances
10 kHz to 2 MHz 100, 120, 135 Ohm
00 Hz to 10 kHz 600 Ohm
Output Level Range  0 to -6 dBm
Resolution  0.1 dB
Accuracy at 0 dBm  0.5 dB

Receiver
Impedances
10 kHz to 2 MHz 100,120,135 Ohm
200 Hz to 10 kHz 600 Ohm With optional external adapter
10 kHz to 2 MHz >10kOhm II 30 pF
Input Level Range  -90 to 0 dBm
Resolution  0.1 dB
Accuracy at 0dBm  Ãƒâ€šÃ‚±0.2 dB

LOSS, NEXT and FEXT Measurement Impedance
10 kHz to 2 MHz 100, 120, 135 Ohm
200 Hz to 10 kHz 600 Ohm Measuring range
Loss, NEXT measurement  0 to 80 dB
FEXT measurement  0 to 90 dB Accuracy
Loss, FEXT, NEXT <50 dB  Ãƒâ€šÃ‚±0.5 dB
Loss, FEXT, NEXT <70 dB  Ãƒâ€šÃ‚±1 dB
Loss, FEXT >70 dB  Ãƒâ€šÃ‚±1.5 dB

LCL Balance Measurement
Impedance
10 kHz to 2 MHz 100, 120, 135 Ohm
200 Hz to 10 kHz 600 Ohm
Measuring range   0 to 40 dB Accuracy
10 kHz to 1 MHz Ãƒâ€šÃ‚±1 dB
200 Hz to 2 MHz Ãƒâ€šÃ‚±2 dB

Impedance Measurement
Measuring range
10 kHz to 2 MHz up to 400 Ohm
200 Hz to 10 kHz 300 to 1600 Ohm Accuracy
10 kHz to 1 MHz Ãƒâ€šÃ‚±5% ±5 Ohm
200 Hz to 2.1 MHz Ãƒâ€šÃ‚±10% ±5 Ohm

Return Loss Measurement

Line Impedance
10 kHz to 2 MHz 100, 120, 135 Ohm
200 Hz to 10 kHz 600 Ohm Measuring range
Return loss measurement  up to 40 dB
Impedance range   Z/2 to 2Z Accuracy at 20 dB
10 kHz to 1 MHz Ãƒâ€šÃ‚±1 dB
200 Hz to 2 MHz Ãƒâ€šÃ‚±2.5 dB

Spectrum Analyzer
Frequency ranges Bandwidth
10 to 2000 kHz  5/10 kHz
2.5 to 500 kHz  1.25/2.5 kHz
1 to 200 kHz  0.5/1 kHz
0.2 to 20 kHz  50/100 Hz

Wideband Noise Measurement

Weighting filters
For POTS  P Filter
For ISDN BRA  E Filter
For ISDN PRA HDB3  G2-E Filter
For HDSL, 2 PAIR, 2B1Q F-E Filter
For HDSL, 1 PAIR, 2B1Q F1-E Filter
For ADSL, DMT G Filter
For SDSL, Coded 16-PAM  3 dB at fmax Filter
Measuring Range
With P and E filter 0 to -80 dBm
With F and G filters 0 to -70 dBm
Without filter  0 to -65 dBm
Measurement times 1, 5, 10, 15, 30 s
1, 5, 10, 15, 30 min

Impulse Noise Measurement

Pulse width  >500 ns
Interval size  10 ms
Threshold range  0 to -60 dBm
Maximum count  65000
Measurement times 1, 5, 10, 15, 30 s
1, 5, 10, 15, 30 min
Fault Location with TDR
Measuring Modes Single
pair Single pair long time
Pair comparison
Comparison to memory
XALK point location

Measuring ranges
Depends on cable quality up to 10 km
Resolution  0.1% of range
Accuracy 0.4% of range

Propagation velocity
PVF  0.3 to 0.999
V  90 to 299 m/ms
V/2  45 to 150 m/ms

Gain range 0 to 72 dB

Measuring pulse
Amplitude  5 V into 120 Ohm
Width  25 to 5000 ns


BRIDGE (optional built in panel)
Loop Resistance Measurement
Measuring range  up to 10 kOhm
Accuracy (RL>100 Ohm) f0.2% f0.1 Ohm
Resistance difference Measurement
Measuring range
RL 1 Ohm to 5 kOhm
DR up to 1 kOhm
Accuracy
1 Ohm to 10 Ohm f1% f0.1 Ohm
10 Ohm to 100 Ohm f1% to 0.2%f0.1 Ohm
100 Ohm to 1000 Ohm f0.2% f0.1 Ohm
Insulation Resistance Measurement
Measuring range  10 kOhm to 10 GOhm
Accuracy
0.1 to 100 MOhm f2%
100 MOhm to 3 GOhm  f10%
3 GOhm to 10 GOhm  f25%
Capacitance Measurement
Measuring range  1 nF to 10 mF
tan d 0.0001 to 10
Accuracy (10nF to 10 mF) f 0.5% f1 digit
Measuring frequency 11 Hz
Voltage Measurement
Measuring range  AC, DC up to 200 V
Frequency range  15 to 300 Hz
Accuracy f 1% f1 V
Fault location
Leakage Location
Loop resistance range 1 Ohm to 10 kOhm
Leakage resistance range 0,1 to 100 MOhm
Accuracy of Lx/L (RL=2 kOhm, Lx/L=0.1 to 1)
F<1 MOhm  f 0.1% f1digit
F=1 to 5 MOhm  f 0.2% f1digit
F=5 to 25 MOhm  f 1% f1digit
F=25 to 100 MOhm  f 5% f1digit
Break Location
Measuring range  up to 10 km
  (depending on cable)
Accuracy
(C=20nF to 10 mF) f0.2% to f1% f1 digit
Measuring frequency 11 Hz
DMM (optional built in panel)
DC Voltage Measurement up to 200 V
Accuracy f1% f1 V
DC Current Measurement  up to 150 mA
Accuracy f1% f1 mA
Loop Resistance Measurement 1Ohm to 2 kOhm
Accuracy  f0.5% f1 Ohm
Insulation Measurement 1 MOhm to 500 MOhm
Accuracy f2%

Micro Interruption (sw. option)
Test Signal
Frequency  2kHz, 82 kHz f100 Hz
Input level range 0 to -30 dBm
Input Impedance
For 2 kHz test signal 600 Ohm
For 82 kHz test signal 100 Ohm
Selectable Threshold
Below the normal input level
For 2 kHz test signal 3, 6, 10, 20 dB
For 82 kHz test signal 3, 6, 10 dB
Accuracy of Threshold
For 3, 6, 10 dB f1 dB
For 20 dB f2 dB
Measuring Time
Adjustable 4 min to 72 hours
  4, 8, 12, 24 min
  1, 2, 4, 8, 12, 24, 48, 72 hour
Interruption Categories 0.3 ms to 3 ms
3 ms to 30 ms
  30 ms to 300 ms
300 ms to 1min
>1 min
Evaluation Relative duration, Errored sec
  Count & time distribution/category
High impedance adapter (option)
Input impedance >10kOhm II 30pF
Output impedance 135 Ohm
Attenuation  40 dB

Optional:

Remote-unit
DMM
option
BRIDGE option
PC software for result transfer
PC software for parameter set edition

KE-LQ20
Battery pack
Carrying case
Test leads
Charger
Using Instructions



V-TECH COMMUNICATIONS
1st Floor, SCF-57-58, Huda Market, Sector-29, Faridabad - 121008, Haryana, India
Mr. Rohit Gupta
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