EXFO MaxTester MAX-610 - Manual (Page 160)

Noise Tests
152 MAX-610
WB PSD Noise
WB PSD Noise
The wideband power spectral density (PSD) noise test measures the noise
energy at a point in a noise spectrum. It is expressed as power per hertz at
a point in a noise spectrum.
PSD
The PSD page allows you to configure the parameters
for the wideband PSD noise test and view the results
in either Portrait or Landscape Mode.

Current Group is the current test group name, for
example Noise Tests.

Current Test displays the test being measured.
Here you can switch to another test from the given
list. However, this action will terminate the
ongoing measurement test.

Bandwidth sets the frequency range for the test.

Noise Filter defines the filter currently enabled. Options are: None,
ISDN-E, HDSL-F, ADSL-G, ADSL, ADSL2+, VDSL, VDSL2-8, VDSL2-12,
VDSL2-17, VDSL2-30.

Termination Resistance defines the resistance of the dummy load
connected to the line.

Peak Hold allows you to measure the current PSD noise value,
compare it against the peak value at each given frequency, and display
the maximum value. Select either ON or OFF.

Threshold Settings button opens a new page that allows you to set the
RMS Noise Threshold parameters for the test.

Select Graph button changes to Graph Selected when pressed and
opens a new selection of function keys which allow you to maneuver
the graph as follows: