R&S
®
ENY81
Operation
<
Operating Manual 1309.8649.14-01
8
2.1 Radio Disturbance Measurements in Line
CISPR 22
The ISN consists of one basic network (eight-wire ISN) with D-Sub-25 connectors and
special adapter sets for RJ-11/RJ-45 modular connectors. The adapters have two
tasks, i.e. hardware adaptation to the respective telecommunications interface and
definition of the longitudinal conversion loss (LCL) of the ISN.
A set of adapters consists of the following:
Two LCL adapters to implement required the longitudinal conversion loss (LCL) for
the EUT port in relation to the cable category of the connected telecommunications
line (category 5 or 3)
One connection adapter for the AE port
Together with the basic network, two different adapter sets are provided. One adapter
set allows connection to RJ-45 sockets with pin assignments in line with EIA/TIA
T568A or T568B, respectively. The other adapter set offers user-selectable pin
assignments via 1 mm banana connectors. These connectors make it possible to
implement each pin combination of the RJ-11/RJ-45 connectors including the reversion
of polarity or direct connection. Table 1 gives an overview.
Type
Application
Pin assignment in line with EIA/TIA T568B
Pair 1/
Pair 2/
Pair 3/
Pair 4/
Connector
Pin 4, 5
Pin 1, 2 Pin 3, 6
Pin 7, 8
Ethernet
(100BaseT4,
1000BaseT)
RJ-45
X X
X X
R&S ENY81
basic adapter
User-selectable
pin assignment
RJ-11, RJ-45 and
1 mm
Table 1
Overview of adapters
Due to the high symmetry requirements, the LCL adapters can be delivered only
together with the basic network.
