Phoenix DT
Compact(desktop) LF/HF automatic measuring system
for xDSL cable cat 3 & 4
This automatic testing system has been developed to offer a cost effective solution for testing the xDSL cable Cat 3 and 4. It allows low frequency measurement of pairs and quads (RCKE) as well as the high frequency parameters up to 40 MHz.Its feature is the integration of a network analyser directly inside the housing, which makes the system compact system (desktop).
System advantages
- Compact (desktop)
- Cost effective
- User friendly
- Fast
- ISO 17025
Specifications for Low Frequency parameter testing
Description | Designation for pairs | Designation for quads | Accuracy | Scale |
Conductor resistance | Ra, Rb | Ra, Rb | ± 0.1% + 10 mΩ | 0 - 19'999 kohms |
Loop resistance | R | R1, R2 | ||
Resistance unbalance | DR | DR1, DR2, DR3 | Computed | %, Ω |
Capacitance | C | C1, C2, C3 | ± 0.25% ± 10pF | 0 - 2'000nF |
Capacitance unbalance | K | K1 - K12 | ± 1% ± 6pF | |
Capacitance unbalance to ground | Ei, Ea, E | Ei1-Ei3 |
Specifications for High Frequency parameter testing
Attenuation (corrected at 20°C)
Accuracy | 1 kHz - 64 kHz | 64 kHz - 20 MHz | 5 MHz - 40 MHz |
-60 dB to -80 dB | ± 0.8 dB | ± 1.0 dB | ± 2 dB |
-10 dB to -60dB | ± 0.6 dB | ± 0.6 dB | ± 1.3 dB |
0 dB to -10 dB | ± 0.2 dB | ± 0.4 dB | ± 0.7 dB |
Near-End Crosstalk NEXT & Far-End Crosstalk FEXT
Accuracy | 1 kHz - 64 kHz | 64 kHz - 20 MHz | 5 MHz - 40 MHz |
-80 dB to -95 dB | ± 2.5 dB | ± 2.0 dB | ± 4 dB |
-60 dB to -80 dB | ± 1.5 dB | ± 1.0 dB | ± 2.0 dB |
-20 dB to -60 dB | ± 1 dB | ± 0.6 dB | ± 1.0 dB |
Impedance (open/short and terminated 100Ω)
Accuracy | 1 kHz - 20 MHz | 20 MHz - 40 MHz |
85Ω - 135Ω | ± 1% | ± 2% |
75Ω - 155Ω | ± 2% | ± 3% |
Calculated HF Parameters
- Fitted Impedance
- Return Loss (RL) (Open/Short and Terminated 100?) (fully complex method)
- NEXT Worst Case, Power Sum, Power Sum Worst Case
- FEXT Worst Case, Power Sum
- Individual ACR, ACR Worst Case, Power Sum ACR
- Global Power Sum (NEXT + FEXT)
- ELFEXT Pair to Pair, Worst Case, Power Sum, Power Sum Worst Case
- Velocity of Propagation (VOP)
- Propagation Delay (Phase Delay), Group Delay, Delay Skew
Statistical HF means (pair)
- Maximum value, absolute maximum value
- Minimum value, absolute minimum value
- Average value, absolute average value
- Standard deviation, standard deviation (n-1)
- Mean standard deviation
- Quadratic mean
- Minimum margin, average margin
Statistical HF means (cable)
- Minimum and maximum value for the cable
- Frequency of minimum or maximum values
- Pair for minimum or maximum values
- Minimum margin to the limit for the cable
- Frequency of minimum cable margin
- Value of minimum cable margin
- Average of the minimum margin for each pair