Datasheet

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Mix and match 34980A modules to create your own custom configuration
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.
Module Description Max volts
Switch/Carr
y
current
BW (MHz)
Scan
ch/sec
Thermal
offset
Comments
Multiplexer modules
34921A
40-channel armature multiplexer
w/low thermal offset
± 300 V
1A /2A
45 MHz
100
< 3 μ V
Temperature reference
4 current channels
Config as 2- or 4-wire
34922A
70-channel armature multiplexer
± 300 V
1A /2A
25 MHz
100
< 3 μ V
Config as 2- or 4-wire
34923A
40/80-channel reed multiplexer
± 150 V
0.5A /1.5A
45 MHz
500
< 50 μ V
Config as 1-, 2- or 4-
wire
34924A
70-channel reed multiplexer
± 150 V
0.5A /1.5A
25 MHz
500
< 50 μ V
Config as 2- or 4-wire
34925A
40/80-channel optically isolated
FET multiplexer
± 80 V
0.02A
1 MHz
1000
< 3 μ V
Config as 1-, 2- or 4-
wire
Matrix modules
34931A
Dual 4x8 armature matrix
± 300 V
1A /2A
30 MHz
100
< 3 μ V
Backplane expandable
34932A
Dual 4x16 armature matrix
± 300 V
1A /2A
30 MHz
100
< 3 μ V
Backplane expandable
34933A
Dual/Quad 4x8 reed matrix
± 150 V
0.5A /1.5A
30 MHz
500
< 50 μ V
Backplane expandable
Config as 1- or 2-wire
34934A
Quad 4x32 reed matrix
± 100V
0.5A /0.5A
20MHz
500
< 50 μ V
Row expansion kit.
Config as 1- or 2-wire
General-purpose modules
34937A
28-channel Form C and
4-channel Form A
± 300 V
± 250 VAC
1A /2A
5A
10 MHz
N/A
< 3 μ V
< 3 μ V
34938A
20-channel 5-amp Form A
± 250 VAC
5A /8A
1 MHz
N/A
< 3 μ V
34939A
64-channels Form A
± 100 V
1A /2A
10 MHz
N/A
< 3 μ V
Module
Description
Comment
System control modules
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
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.
34959A
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
Module Description
Insertion
loss
Isolation Freq range VSWR
Input
impedance
Comments
RF and microwave modules
34941A
Quad 1x4 50 ohm 3 GHz RF
multiplexer
0.6 dB
> 58 dB
3 GHz
< 1.25
50 Ω
@ 1 GHz
34942A
Quad 1x4 75 ohm 1.5 GHz RF
multiplexer
0.6 dB
> 60 dB
1.5 GHz
< 1.35
75 Ω
@ 1 GHz
34945A / Microwave switch/attenuator driver Can drive up to 64 external switch coils; 32 SPDT switches, 8 multiport switches,
34945EX T 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
@ 26.5 GHz
34947A
Triple 1x2 SPDT
unterminated microwave
switch
< 0.42 dB
< 0.69 dB
< 0.8 dB
> 85 dB
< 0.69 dB
< 0.8 dB
4 GHz or
20 GHz
26.5 GHz
< 1.15
< 1.30
< 1.6
50 Ω
@ 4 GHz
@ 20 GHz
@ 26.5 GHz