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 up to 20.000 m
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 +50ƒC
Storage and transport -20 to +70ƒC
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  ±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  ±0.5 dB
Loss, FEXT, NEXT <70 dB  ±1 dB
Loss, FEXT >70 dB  ±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 ±1 dB
200 Hz to 2 MHz ±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 ±5% ±5 Ohm
200 Hz to 2.1 MHz ±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 ±1 dB
200 Hz to 2 MHz ±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 20 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-Einheit
AC/DC Messbrücke
PC Software für die Erstellung menueller Parametersätze
PC Software für Unterbrechungsmessungen (2 Geräte erforderlich)
PC Software für Gruppenlaufzeitverzerrungsmessungen (2 Geräte erforderlich)
PC Software Quick XTALK (zwei Geräte erforderlich)

KE-LQ20
230 V Ladegerät
12 V Kfz Ladegerät
Tragetasche
Bedienungsanleitung