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Troubleshooting R&S
ZVAX24
1312.7979.82 3.24
E-1
If the S21 values displayed on the R&S ZVA's screen are not within the range shown in the table below,
the combiner must be replaced.
Frequency range
Transmission loss
10 MHz to 18 GHz
P
3.3 dB
18 GHz to 24 GHz
P
4.1 dB
Testing the isolation (combiner on):
Connect the test cable from R&S ZVA port1 to the input X1 of the port 1 transfer switch and the test
cable from R&S ZVA port2 to the input X1 of the port 3 transfer switch.
Put a male termination (from calibration kit) to output X2 of the port 1 transferswitch.
Set the R&S ZVA to Meas S21.
Read transmission S21.
If the S21 values displayed on the R&S ZVA's screen are not within the range shown in the table below,
the combiner must be replaced.
Frequency range
Transmission loss
10 MHz to 500 MHz
> 10 dB
500 MHz to 24 GHz
> 20 dB
Testing the match (combiner on):
Connect the test cable from R&S R&S ZVA port1 to the input X1 of the port 3 transfer switch and the
test cable from R&S ZVA port2 to the input X1 of the port 1 transfer switch.
Put a male termination (from calibration kit) to output X2 of the port 1 transfer switch.
Set the R&S ZVA to Meas S11.
Read reflection S11.
If the S11 values displayed on the R&S ZVA's screen are not within the range shown in the table below,
the combiner must be replaced.
Frequency range
Reflection loss
10 MHz to 10 GHz
> 11 dB
10 GHz to 18 GHz
> 9 dB
18 GHz to 24 GHz
> 7 dB
Содержание ZVAX24
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