Next detail, Next graph, Attenuation – Microtest TSB-67 - 568A Annex E User Manual
Page 23
Page 23
Press the
Ñ
or
Ò
arrow key to view the previous or next test results screen.
Press the
ESCAPE
key to return to the
AUTOTEST RESULTS
screen.
Note: For diagnostic purposes, you can run NEXT continuously by pressing the
Measure Cable
Performance
key and selecting
NEXT
.
NEXT Detail
To display this screen, press
Detail (F1)
from the
NEXT
screen. This screen displays the frequency
sweep range and the worst case NEXT for each pair.
Press
Graph (F1)
to enter graphing mode.
Graph (F1)
is available when
Save Sweep Data
has
been selected in the
AUTOTEST SETUP
, or when NEXT results are viewed immediately after
running the test.
Press
Pair (F3)
to toggle through the available pair combinations.
When using the
2-Way Injector+
(or the
2-Way Injector
), press
F4
to toggle between NEXT
results for the Scanner (
Penta
) or Injector (
Inj
) end of the link.
Press the
ESCAPE
key to return to the
NEXT
screen.
NEXT Graph
To display this screen, press
Detail (F1)
from the
NEXT
screen, then press
Graph (F1).
This screen
displays the NEXT graph for the indicated pair combination.
The top line of the screen displays the worst case NEXT and the frequency at which it occurred.
When using the
2-Way Injector+
(or the
2-Way Injector
), the second line of the screen indicates
if NEXT is being reported for the Scanner (
Penta
) or Injector (
Inj
) end of the link.
Press
Zoom (F1)
to magnify the area of the graph around the cursor. The Zoom key can display
1x, 2x, 5x or 10x magnification.
Press
Print (F2)
to print the NEXT graph.
Press the
ESCAPE
key to return to the
NEXT
DETAIL
screen.
Attenuation
The Attenuation function measures signal loss in a cable as a function of frequency. This
measurement is a very important cable certification parameter. Your Scanner measures cable
attenuation using the one way method as specified by IEEE and EIA.
The one way Attenuation measurement requires that a signal be injected at one end of the cable
and measured at the other end to determine cable loss. The Injector acts as the far end signal
generator and the Scanner NEXT receiver measures the received signal.