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From the setup menu for a particular XDSL test, press K.
To stop a running test, press M or K.
WB Noise/Level Test
The WB Noise / Level test measures metallic noise or signal level present on a
pair. The test provides a snapshot WB or BB measurement on either spare
pairs (in Terminated mode) or on active pairs (in Bridged mode).
The test employs DSP techniques to perform measurements at multiple
frequencies at the same time. Depending on the choices you make in the test
Setups, the tester takes measurements with either the higher resolution Nyquist
frequency set (
Fine
frequency set (Coarse, up to 18 MHz) at 4.3 kHz spacing.
Setting Up a WB Noise/Level Test
To set up a WB Noise / Level test, select the test on the XDSL Toolbox and
press D(
). Refer to Table 5-4 for Setup parameters for the test.
Setups
Table 5-4. WB Noise/Level Test Setup Parameters
Parameter
Target Service Type
Termination Mode
Measurement Filter
Measurement Mode
Noise Pass Threshold
WB Weighted Noise Pass
Threshold
ADSLx Modem Filter
XDSL Testing and Loop Qualification
, up to 1.2 MHz) at 508 Hz spacing, or with the DMT
ADSL/2 (1.1 MHz), HDSLx (1.1 MHz), ADSL2+
(2.2 MHz), VDSL (12 MHz), VDSL (18MHz)
Terminated or Bridged
G (ADSL) , 1.3 MHz, E (ISDN BR), F (HDSL)
{20 MHz Filter used for VDSL service}
Coarse (DMT) or Fine (HDSL only)
≤ -50 dBm (Range = 0 to -99)
≤ 55 dBrn (Range = 0 to 99)
{Not used on ADSL2+ & VDSL Service Types}
N (Disabled) or Y (Enabled)
The XDSL Toolbox
Setting (default in bold)
5
5-29
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