User`s guide

Making Measurements 4
N9340B User’s Guide 79
Monitoring the ADSL Signal with Option XDM
xDSL (ADSL and VDSL) is widely used for
broadband internet connections at homes and
businesses. Service providers occasionally face
problems with interference on their xDSL lines.
The interference is mainly intermittent intrusion
from nearby external sources such as electric
motors, elevators, and appliances. In order to
monitor, capture and remove intermittent
interference, the engineer may need to work in the
field for extended periods of time.
The xDSL Measurement mode(Option XDM)
provides the capability to measure the ADSL,
ADSL2+ and VDSL network with a frequency range
of 3 kHz to 40 MHz.
Figure 4-29 xDSL Measurement
NOTE
An xDSL probe from Vierling is required to connect the
N9340B analyzer to xDSL networks in the field.
NOTE
The option XDM is not available as an upgrade and must be
ordered at the time of instrument purchase. The option XDM
can be used for other applications which require improved
DANL and phase noise at frequencies from 9 kHz to 3 GHz.