R&S ENY-FTS
Operation
Operating Manual 1309.8949.14 - 0
2
13
2.4 Decoupling attenuation
The test set-up is calibrated with the measurement cables connected as shown in
Figure 10. See FULL-TWO-PORT calibration (TOSM) of the network analyzers.
Fig. 10 Calibration set-up for Decoupling Attenuation
The decoupling attenuation is measured between the Receiver port and AE port of the
ISN. The Calibration Adapter “Jig CAL
U100B
” is used for connecting the network
analyzer on the AE port. The measurement is performed with open and shorted EUT
port using the Termination Adapter “A-OPEN” and “A-SHORT” or “Jig TRA U0-150” for
R&S ENY81-CA6 respectively. The decoupling attenuation requirements must be met
in both cases. The test set-up for measuring the voltage division factor is shown in the
Figure 11. For R&S ENY81-CA6 it is shown in Figure 12.
Fig. 11 Test set-up for Decoupling Attenuation in accordance with CISPR 16-1-2
The LCL adapter to be connected on the EUT port and the Connecting adapter to be
connected on the AE port during EUT testing don’t influence the decoupling
attenuation result. Hence the ISN is measured without these adapters in accordance
with Figure 11.
Fig. 12 Test set-up for Decoupling Attenuation in accordance with CISPR 16-1-2 for R&S ENY81-
CA6
