• 7
• 100pV, 100 nΩ sensitivity
• 1.3 nVrms, 8 nVpp noise
• Built-in low noise 2 channel
• Direct SPRT, RTD, Thermistor, and
Nanovolt Performance
at a Microvolt Price
The Agilent Technologies 34420A nano-
Volt/micro-Ohm meter is a
high-sensitivity multimeter optimized for
performing low-level measurements. It
combines low-noise voltage measurements
with resistance and temperature functions,
setting a new standard in low-level flexibil-
ity and performance.
Take the Uncertainty Out of Your
Low-Level Measurements
Low-noise input amplifiers and a highly
tuned input protection scheme bring read-
ing noise down to 8 nVpp. Combine this
with 7
analog and digital filtering, 2 ppm basic
24-hour dcV accuracy, and a shielded, cop-
per pin connector and you’ve got accurate,
repeatable measurements you can
count on.
performance
scanner
Thermocouple measurements
1 /
2
1
/
digits resolution
2
digits of resolution, selectable
Agilent 34420A
NanoVolt/Micro-Ohm Meter
Data Sheet
Two Input Channels
An integral two-channel programmable scan-
ner simplifies voltage comparisons. Built-in
ratio and difference functions enable
auto mated two channel measurements
without the need for an external nanoVolt
scanner. Both channels share the same
low noise specifications to ensure accurate
comparisons.
Built-In Resistance and
Temperature
The 34420A combines its low-noise nano-
Volt input circuits with a high-stability
current source to provide precise low-level
resistance measurements – no more has-
sling with the cost and complexity of an
external current source. Three resistance
modes are included:
• Standard
• Low-power
• Voltage-limited for
Offset compensation is also provided to
minimize thermal EMFs and associated
errors.
SPRT Measurements
Built-in ITS-90 conversion routines accept
the calibration coefficients from your
SPRT probe for direct temperature mea-
surement and conversion. Thermocouples,
thermistors, and RTDs are also supported.
dry-circuit testing
Unequaled Versatility
The 34420A gives you the versatility to
tackle your most challenging tasks, both
on the benchtop and in your automated
system. Standard features include RS-232
and GPIB interfaces, SCPI and Keithley
181 program ming language, 1024-reading
memory, scaling and statistics, and a chart
recorder analog output.
Agilent IntuiLink:Easy Data Access
The included Agilent IntuiLink
software allows your captured data
to be put to work easily, using PC applica-
tions such as Microsoft Excel® or Word®
to analyze, interpret, display, print, and doc-
ument the data you get from the 34420A.
You can specify the meter setup and take
a single reading or log data to the Excel
spreadsheet in specified time intervals. To
find out more about IntuiLink visit
www.agilent.com/find/intuilink
Quality You Can Count On
The 34420A gives you the quality and
reliability you expect from Agilent
Technologies. From the product’s proven
>150,000 hour Mean Time Between Failure,
to its standard 1-year warranty, Agilent
stands behind you to bring a new level
of confidence to your low-level measure-
ments.
