AT490-50 Programmable Attenuator

Programmable Attenuator Features

The AT490 is a universal digital attenuator with standalone supply and small dimensions, providing easy handling and remote control through RS232 9 pins interface.

Its small size and ease of use will soon make it a must in any RF professionnal or amateur lab.

Its communication possibilities allows to include it in a larger automated test bench or in complete instrumentation systems.

The AT690-USB is the extended frequency range version, with some great additionnal features, like USB connection, Li-Ion battery, rugged aluminium housing and graphical display.

AT490 is also available with 75 Ohms impedance, but with limited frequency range (2.2 GHz) and BNC connectors, as reference AT290-75.

AT490 Programmable Attenuator

• Frequency range: 100kHz-4GHz

• Attenuation range: 0 to 91 dB, 1 dB step

• Insertion loss:

            < 6 dB at 1 GHz

            < 7 dB at 2 GHz

            < 8 dB at 3 GHz

            < 10 dB to 4 GHz

• • RF port & Impedance: SMA, 50 Ohms

  • Max power : 25 dBm

  • IP3 : > 35 dBm

  • Control interface: Manual / RS232 / USB