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34902A
16-Channel High-Speed Multiplexer
• 250 ch/s scanning
• Two- and four-wire scanning
• Built-in thermocouple reference junction
The Agilent 34902A employs reed relays to achieve
scan rates up to 250 channels per second. Use this
module for high-throughput automated test appli-
cations as well as high-speed data logging and
monitoring tasks.
Sixteen two-wire inputs switch up to 300 V.
Two- and four-wire channels may be mixed on
the same module. User provided shunt resistors
are required for current measurements.
34908A
40-Channel Single-Ended Multiplexer
• 60 ch/s scanning
• Single-wire switching for common-low
applications
• Built-in thermocouple reference junction
Use the Agilent 34908A for the greatest density
in common-low applications, such as battery test,
component characterization, and benchtop testing.
Each module switches 40 one-wire inputs. All
two-wire internal measurements except current
are supported. The module low connection is
isolated from earth and can float up to 300 V.
Note: Thermocouples must be electri-
cally isolated from each other to avoid
current loops and subsequent meas-
urement errors.
Note: Not recommended for connec-
tion to ac line without external tran-
sient suppression.
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