R&S®ZW2900 RX Input Protection

Key Facts
Picture R&S®ZW2900 RX Input Protection

An optional RF protection for the input of the 500 W and 1000 W R&S®Series2000 transceivers is available. The R&S®ZW2900 addon module ensures destructive-free reception in the case of RF interference at the antenna (caused by very close transmitters) of up to 100 V rms corresponding to a power of 200 W into 50 Ω.

The protection function is provided by a power PTC resistor looped into the R&S®VK2500/2900 power amplifier between the antenna and the receiver input. The PTC resistor goes high impedance when RF interference is present and thus protects the receiver input.

The use of the R&S®ZW2900 option is required whenever collocation problems caused by RF irradiation impair reception or make it impossible. This situation is frequent on ships and can be overcome by using the R&S®ZW2900 option.

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