R&S ENY81-CA6
Operation
Operating Manual 1309.8632.14 - 01
7
2 Operation
Impedance stabilization networks (ISN) are coupling/decoupling networks in line with
CISPR 22 for measurements of conducted common-mode disturbances of information
technology equipment (ITE). The ISN is inserted into the signal cable path between the
equipment under test (EUT) and the associated equipment (AE) or load necessary for
the operation of the EUT. The ISN establishes the common-mode termination
impedance for the EUT's telecommunications port during measurement and emulates
the unsymmetrical contribution (longitudinal conversion loss, LCL) of the connected
line. The ISN must not affect the normal quality of the wanted symmetrical signal.
The R&S ENY81-CA6 ISN is designed for radio disturbance measurements on
unshielded telecommunications lines of cable category CAT6 with up to four
symmetrical pairs as shown in Figure D.3 in CISPR 22, Ed.5.2, 2006 and EN
55022:2006 (IEC/CISPR 22:2005 modified).
Fig. 1
Parts of the R&S ENY81-CA6 ISN
