18 | Keysight | 34980A Multifunction Switch/Measure Unit - Data Sheet
34942A typical initial crosstalk
50
50
50
50
0 dB
-10 dB
-20 dB
-30 dB
-40 dB
-50 dB
-60 dB
-70 dB
-80 dB
-90 dB
-100 dB
101
COM
102
201
COM
202
34946A Dual 1x2 SPOT Terminated Microwave Switch
Figure 11. 34946A dual 1x2 SPDT terminated microwave switch
10 MHz
40 MHz 100 MHz 400 MHz 1 GHz 2 GHz
34946A/47A—from DC to 26.5 GHz
For applications where you need only a few high-frequency switches, the 34946A and 34947A offer
single-pole, double-throw switches in either 4GHz, 20GHz or 26.5GHz options. These modules internally
mount two or three independent Keysight N1810 series coaxial switches. These switches are well known
for their excellent insertion loss, isolation and VSWR speciꢁcations.
34942A 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
Switch read back capabilities allow you to query the position of the switch. You can choose higher density
with the unterminated switches, or select the terminated switches to maintain impedance match.
34946A/47A option 001
These modules can also be ordered without switches installed. This give you the capability to install your
own N1810 series switches or use the module to control the N1810 Series switches outside the mainframe.
N1810 minimum required switch options
Coil Voltage
DC Connector
Drive
option 124
option 201
option 402
24 Vdc coil
10 MHz
40 MHz 100 MHz
400 MHz 1 GHz 2 GHz
“D” subminiature 9 pin female
position indicators
Frequency
34942A 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
Banks
2 & 3
Banks
1 & 4
10 MHz 40 MHz 100 MHz 400 MHz 1 GHz 2 GHz
Frequency
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