17 | Keysight | 34980A Multifunction Switch/Measure Unit - Data Sheet
34941A typical initial crosstalk
34980A RF and microwave switch modules
0 dB
-10 dB
-20 dB
-30 dB
-40 dB
-50 dB
-60 dB
The 34980A offers a variety of RF and microwave switch modules—RF multiplexers,
SPDT switching from DC to 26.5 GHz, or a switch/ attenuator driver module that
allows you to control switches or attenuators external to the 34980A mainframe.
34941A/42A—from DC to 3 GHz The RF switch modules can be used to switch
signals from DC to 3 GHz and above. This can be useful for switching signals
between oscilloscopes, spectrum analyzers, network analyzers, and other
RF test equipment.
-70 dB
Channel to channel
-80 dB
-90 dB
Bank to bank
-100 dB
10 MHz
40 MHz 100 MHz
400 MHz 1 GHz
4 GHz
Choose from the following features:
– 50- or 75-ohm Quad 4-channel multiplexers
– DC to 3 GHz
Frequency
– 30 V, 0.5 A, 10 W
34941A typical initial insertion loss
0.0 dB
0.3 dB
0.6 dB
0.9 dB
1.2 dB
1.5 dB
1.8 dB
2.1 dB
2.4 dB
2.7 dB
3.0 dB
The 34941A and 34942A are conꢁgured as four independent 1x4 RF multiplexers
on a single module. Multiple banks can be connected together to create a larger
multiplexer. To prevent ground loops, individual multiplexers are isolated from each
other and from the mainframe’s chassis. However, the multiplexer channels can
be chassis grounded with a simple change. Both 50-ohm and 75-ohm versions
are available.
10 MHz
40 MHz 100 MHz
400 MHz 1 GHz
4 GHz
Frequency
34941A typical initial VSWR
2.0
1.9
1.8
1.7
1.6
1.5
1.4
1.3
1.2
1.1
1.0
10 MHz
40 MHz 100 MHz
400 MHz 1 GHz
4 GHz
Frequency
Figure 10. 34941A Quad 1x4 50 ohm 3 GHz multiplexer
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