Description
Keysight 34941A – Quad 1×4 50 Ohm 3 GHz Multiplexer Module for 34980A
The Keysight 34941A RF multiplexer module for the 34980A Multifunction Switch/Measure Unit offers bi-directional switching for test signals from DC to 3 GHz. High channel isolation ensures quality dynamic range measurements with your oscilloscope, spectrum analyzer, or other instrumentation.
The RF multiplexers are configured as four independent 1×4 RF multiplexers on a single module. Individual multiplexers are isolated from each other and the Mainframe chassis to prevent ground loops. Multiple banks can be cascaded together to create an even large multiplexer – up to 97 cascaded RF channels in a single 34980A mainframe.
34980A RF and microwave modules
The chart below outlines several main features of RF and microwave modules for the Keysight 34980A.
| Model | Description | Insertion Loss | Isolation | Freq Range |
| 34941A | Quad 1×4 50 ohm 3 GHz RF multiplexer | 0.6dB | >58dB | 3 GHz |
| 34942A | Quad 1×4 75 ohm 1.5 GHz RF multiplexer | 0.6dB | >60dB | 1.5 GHz |
| 34945A/EXT | Microwave switch/attenuator driver | |||
| 34946A | Dual 1×2 SPDT terminated microwave switch 4GHz, 20GHz or 26.5GHz | <0.42dB <0.69dB <0.8dB | >85dB >67dB <60dB | <1.15 <1.30 <1.6 |
| 34947A | Triple 1×2 SPDT unterminated microwave switch 4GHz, 20GHz or 26.5GHz | <0.42dB <0.69dB <0.8dB | >85dB >67dB <60dB | <1.15 <1.30 <1.6 |










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