22 Copper tests
ARGUS 152
325
Setting
Explanation
Line qualification
Bandwidth
The bandwidth defines the frequency spectrum that will be measured. It
always beginning from 4.3125 kHz. Its width depends on the frequency
range selected.
The following frequency ranges can be selected:
- 1.1 MHz (ADSL)
- 2.2 MHz (ADSL 2+)
- 8.8 MHz (VDSL2)
- 12.0 MHz (VDSL2)
- 17.6 MHz (VDSL2)
- 30.0 MHz (VDSL2)
Default setting:
2.2 MHz (ADSL 2+)
Bandplan
The bandplan forms the basis for the assessment of the measurement. The
placement and the bandwidth of the upstream and downstream bands, as
well as the PSD mask (max. permissible transmitted power per tone), which is
required for determining the SNR, all depend on this bandplan.
Depending on the bandwidth, the following bandplans are available to choose
from:
- Annex A (ADSLx)
- Annex B (ADSLx)
- 998-M2x-A (VDSL2)
- 998-M2x-B (VDSL2)
- 998ADE17-M2x-A (VDSL2)
- 998ADE17-M2x-B (VDSL2)
- 998ADE30-M2x-NUS0-A (V)
- 998ADE30-M2x-NUS0-M (V)
Which bandplan will be required for your particular line depends on the
bandwidth and your network operator.
Default setting:
Annex B (ADSL x)
Impedance
The impedance determines how the line must be connected in the device.
Ideally, the impedance is chosen to match the characteristic impedance of the
line to be measured.
It can be set to one of the following: 100
(VDSL2), 120
or 135
.
Default setting:
135
(the usual for ADSL)
Transmit
level
The transmit level is the level at which the spectrum's tones are transmitted.
The default value should only be increased in exceptional cases since doing
so will also increase the risk of causing interference with adjacent DSL lines.
Default setting:
0 dBm