EXFO MaxTester 635 - Manual (Page 189)

Frequency Tests
Copper and VDSL2/ADSL2+ Multi-play Test Set 181
WB Balance

Cursor - press the left/right arrow keys to decrease/increase the
values by moving the cursor. Press and hold the left/right arrow
keys to accelerate the cursor. Press
to recall the cursor and
place it in the middle of the current x-axis limits.

Zoom references the middle of the x/y axis and not the cursor
position. Press the arrow keys as follows:
Right = x-axis zoom in.
Left = x-axis zoom out.
Up = y-axis zoom in.
Down = y-axis zoom out.

Pan - use left/right arrow keys to pan the x-axis and the up/down
arrow keys to pan the y-axis.

1:1 resets the x-axis and y-axis limits to full scale.

Return To Test removes these function keys and displays the
previous ones.

Result displays a graph of the Marginal and Good balance results, and
pass/fail status. If any attenuation measurement (trace) is greater/less
than the corresponding marginal test threshold for a
maximum/minimum threshold, the status is fail. Otherwise, the status
is pass.

Marginal is the marginal balance threshold for the currently
selected bandwidth, represented by a horizontal yellow line.

Good is the good balance threshold for the currently selected
bandwidth, represented by a horizontal green line.

Test Status displays the current state of measurement or an error
message.