08 | Keysight | 34980A Multifunction Switch/Measure Unit - Data Sheet
Mix and Match 34980A Modules to Create Your Own Custom Conꢁguration
The 34980A mainframe holds up to eight plug-in modules. Mix and match them to create a custom system to meet your switching
and system control needs. You can easily add or replace modules as your needs change.s
Table 1. 34980A modules at a glance
Switch/Carry
current
Scan
ch/sec offset
Thermal
Module
Description
Max volts
BW (MHz)
Comments
Multiplexer modules
34921A
40-channel armature multiplexer w/low ± 300 V
thermal offset
1A/2A
45 MHz
100
< 3 μV
Temperature reference
4 current channels
Conꢀg as 2- or 4-wire
34922A
34923A
34924A
34925A
70-channel armature multiplexer
40/80-channel reed multiplexer
70-channel reed multiplexer
± 300 V
± 150 V
± 150 V
± 80 V
1A/2A
25 MHz
45 MHz
25 MHz
1 MHz
100
< 3 μV
Conꢀg as 2- or 4-wire
Conꢀg as 1-, 2- or 4-wire
Conꢀg as 2- or 4-wire
Conꢀg as 1-, 2- or 4-wire
0.5A/1.5A
0.5A/1.5A
0.02A
500
500
1000
< 50 μV
< 50 μV
< 3 μV
40/80-channel optically isolated
FET multiplexer
Matrix modules
34931A
34932A
34933A
Dual 4x8 armature matrix
± 300 V
± 300 V
± 150 V
1A/2A
30 MHz
30 MHz
30 MHz
100
100
500
< 3 μV
< 3 μV
< 50 μV
Backplane expandable
Backplane expandable
Dual 4x16 armature matrix
Dual/Quad 4x8 reed matrix
1A/2A
0.5A/1.5A
Backplane expandable
Conꢀg as 1- or 2-wire
34934A
Quad 4x32 reed matrix
+/–100V
0.5A/0.5A
20MHz
10 MHz
500
N/A
< 50 μV
Row expansion kit.
Conꢀg as 1- or 2-wire
General-purpose modules
34937A
28-channel Form C and
4-channel Form A
+/–300 V
+/–250 VAC 5 A
1A/2A
< 3 μV
< 3 μV
34938A
34939A
20-channel 5-amp Form A
64-channels Form A
+/–250 VAC 5A/8A
1 MHz
N/A
N/A
< 3 μV
< 3 μV
Input
+/–100V
1A/2A
10MHz
Insertion
loss
Module
Description
Isolation
Freq range VSWR
impedence Comments
RF and microwave modules
34941A
34942A
Quad 1x4 50 ohm 3 GHz RF multiplexer
0.6 dB
> 58 dB
> 60 dB
3 GHz
< 1.25
< 1.35
50 Ω
75 Ω
@ 1 GHz
@ 1 GHz
Quad 1x4 75 ohm 1.5 GHz RF multiplexer 0.6 dB
1.5 GHz
34945A/
34945EXT
Microwave switch/attenuator driver
Can drive up to 64 external switch coils; 32 SPDT switches, 8 multiport switches,
8 attenuators, or your own combination. Expand with additional 34945EXTs.
34946A
Dual 1x2 SPDT terminated
microwave switch
< 0.42 dB
< 0.69 dB
< 0.8 dB
> 85 dB
> 67 dB
> 60 dB
4 GHz or
20 GHz
26.5 GHz
< 1.15
< 1.30
< 1.6
50 Ω
@ 4 GHz
@ 20 GHz
@ 26.5GHz
34947A
Triple 1x2 SPDT unterminated
microwave switch
< 0.42 dB
< 0.69 dB
< 0.8 dB
> 85 dB
> 67 dB
> 60 dB
4 GHz or
20 GHz
26.5 GHz
< 1.15
< 1.30
< 1.6
50 Ω
@ 4 GHz
@ 20 GHz
@ 26.5GHz
System control modules
Description
34950A
64-bit digital I/O with memory
and counter
Eight 8-bit digital I/O channels with programmable polarity, thresholds up to 5 V,
with handshaking protocols and pattern memory. Two 10 MHz frequency counter and
programmable clock output to 20 MHz.
34951A
4-channel isolated D/A converter
with waveform memory
Output DC voltage up to ± 16 V or DC current up to ± 20 mA.
Output waveforms with a 200 kHz update rate and 16 bits of resolution.
Use on-board memory to create point-to-point waveforms with more than 500,000 points.
34952A
34959A
Multifunction module with 32-bit DIO,
2-ch D/A and totalizer
Four 8-bit digital I/O channels, two ± 12-V analog outputs, and a 100 kHz gated totalizer.
Breadboard module
Create your own custom designs with access to the +12 V and +5 V supplies,
16 GPIO ports and 28 relay drive lines.
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