34901A Datasheet, PDF (13/28 Pages) Keysight Technologies – Data Acquisition/Switch Unit Family

Customize your Keysight 34970A/34972A
with plug-in modules
A complete selection of plug-in modules gives you high
quality measurement, switching, and control capabilities to
choose from. Modules include both low-frequency and RF
multiplexers, a matrix switch, a general-purpose switch, and
a multifunction module that includes digital input/output,
analog output, and totalizer capabilities. You can mix and
match modules to get just the functionality you need right
now—then change or add more channels later as your
application grows.
Modules for the 34970A/34972A are designed to make your
testing easier, faster, and more reliable. Here’s how:
Higher throughput
Our unique architecture incorporates a high-performance
microprocessor on each module, off loading the mainframe
processor and minimizing backplane communications for
faster throughput.
More channels in less space
Surface mount construction and a highly integrated design
minimize the space required for relay drive and interface
circuitry. High density on-module connectors save both
board and connector space normally required by a terminal
block. We use the latest technology to squeeze the most
out of the remaining board space, giving you up to
40 single-ended channels in roughly the same space
used by many data acquisition system terminal blocks.
Convenient connections
On-module screw-terminal connectors make wiring more
convenient. Built-in strain relief cable routing and cable tie
points keep your wiring secure and safe from accidental
tugs and pulls. An internal analog bus routes signals from
any of the low frequency multiplexers directly to the inter-
nal DMM, without the need for external connections.
Use the chart below to help you pinpoint the modules that
meet your needs.
34970A and 34972A Keysight modules-at-a-glance selection guide
Model description
34901A
20 ch Multiplexer
+ 2 current channels
34902A
16 ch Multiplexer
34903A
20 ch Actuator/GP Switch
34904A 4 x 8 Matrix
34905A
Dual 4 ch RF Mux 50Ω
34906A
Dual 4 ch RF Mux 75Ω
34907A
Multifunction Module
34908A
40 ch Single-Ended Mux
Type
2-wire armature
(4-wire selectable)
2-wire reed
(4-wire selectable)
SPDT/form C
Speed Max
(ch/sec) volts
60 300 V
250 ^[1] 300 V
Max Bandwidth Thermal Comments
Page
amps
offset
1 A 10 MHz < 3 µV Built-in cold junction reference 21
2 additional current channels
(22 total)
50 mA 10 MHz < 6 µV Built-in cold junction reference 21
120 300 V 1 A 10 MHz < 3 µV
23
2-wire armature
120 300 V 1 A 10 MHz < 3 µV
23
Common low
(unterminated)
60
42 V 0.7 A 2 GHz < 6 µV 1 GHz bandwidth through
24
BNC-to-SMB adapter cable
Common low
60
42 V 0.7 A 2 GHz < 6 µV 1 GHz bandwidth through
24
(unterminated)
BNC-to-SMB adapter cable
Two 8-bit digital I/O ports
42 V 400 mA
Open drain
25
26-bit event counter
42 V
100 KHz
Selectable input threshold
Two 16-bit analog outputs
± 12 V 10 mA
dc
Max 40 mA total output per
frame
1-wire armature
(common low)
60 300 V 1A 10 MHz < 3 µV Built-in cold junction reference 21
No four-wire measurements
[1] Up to 250 ch/sec to internal memory.
See scanning rates for measurement condition and rate on each instrument.
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