Datasheet

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AC characteristics
Bandwidth at terminal block
3
10 MHz
1 MHz
10 MHz
Channel isolation at terminal block
3
100 kHz
1 MHz
10 MHz
55 dB
35 dB
15 dB
60 dB
40 dB
45 dB
25 dB
5 dB
Capacitance at terminal block
CH - CH
CH - earth Form C 12pF, Form A
10pF
Form C 21pF, Form A
18pF
65 pF
105 pF
20 pF
70 pF
General characteristics
Relay life no-load/rated
Form C – 100 M/100 k
Form A – 50 M/30 k
50 M/30 k
>100 M/100 k
Open/close time
Form C – 4 ms/4 ms
Form A – 10 ms/10ms
10 ms/10ms
4 ms/4ms
Initial/reset relay state
Form C- maintain state
Form A – user
configurable
User configurable
Maintain
Analog bus backplane connection
No
No
No
1. DC or AC RMS voltage, channel-to-channel or channel-to-earth
2. Limited to 6 W of channel resistance power loss per module
3. 50 Ω source, 50 Ω load, differential measurements verified (S21
)
34980A RF and microwave switch modules
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.
Choose from the following features:
• 50- or 75-ohm Quad 4-channel multiplexers
• DC to 3 GHz
• 30 V, 0.5 A, 10 W
The 34941A and 34942A are configured 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.