Keysight N1420A Femto/picoammeter and electrometer/high resistance meter Datasheet

Keysight Technologies
B2980A Series
Femto/Picoammeter and
Electrometer/High Resistance Meter
Data Sheet
The world’s only graphical
Picoammeter/Electrometer
that can confidently measure
down to 0.01 fA and up to 10 PΩ
02 | Keysight | B2980A Series Femto/Picoammeter and Electrometer/High Resistance Meter - Data Sheet
Product Overview
Unique capabilities and features maximize confidence for sensitive measurements
Keysight B2980A Series of Femto/Picoammeters and Electrometers/High Resistance Meters not only
offer best-in-class measurement performance, but also provide unprecedented features to maximize
your measurement confidence. The Femto/Picoammeters and Electrometers both offer 0.01 fA (10 -17 A)
minimum current resolution, which meets virtually all existing and future low-level current measurement
needs. The electrometers feature a 1,000 V voltage sourcing capability that supports up to 10 PΩ (1016 Ω)
resistance measurements. The electrometers also work with Keysight’s well-proven high resistance meter
accessories. Both the Femto/Picoammeter and Electrometer have battery powered versions to eliminate
AC power line noise. This available capability provides an unmatched level of noise reduction, enabling
low-level measurements that were previously impossible.
Unlike conventional picoammeters and electrometers, the B2980A series possesses a 4.3” color LCD-based
graphical user interface (GUI) that provides multiple options for viewing data. In addition to numeric
format, data can also be viewed as a graph, as a histogram and as a trend chart. These unique front-panel
capabilities facilitate the capture of transient behavior and provide the ability to make quick statistical
analyses without the need for a PC. The B2980A series also has features to help you maintain measurement
integrity on the external cabling and fixturing. The available Setup Integrity Checker software permits the
comparison of noise levels for different cabling and fixturing arrangements, allowing you to identify and
isolate the noise-sensitive areas in your measurement system. In addition to these impressive measurement
capabilities, the B2980A series has easy-to-use and convenient measurement assist functions that permit
users with limited or no electrical engineering training to perform complicated electrical characterization
operations with ease.
To provide flexibility and enable you to purchase an instrument with the exact amount of testing capability
for your needs, the Keysight B2980A series offers four product versions.
Key specifications
Model
Measurement resolution
Current measurement
Minimum range
Resistance measurement
Voltage measurement
Input resistance
Charge measurement
Temperature measurement
Humidity measurement
Voltage source
Minimum resolution
Maximum reading rate
Battery operation
Other key features
Femto/Picoammeter
B2981A
6½ digits
0.01 fA - 20 mA
2 pA
Electrometer/High Resistance Meter
B2985A
B2987A
6½ digits
6½ digits
0.01 fA - 20 mA
0.01 fA - 20 mA
2 pA
2 pA
Up to 10 PΩ
Up to 10 PΩ
1 μV - 20 V
1 μV - 20 V
> 200 TΩ
> 200 TΩ
1 fC - 2 μC
1 fC - 2 μC
√
√
√
√
Up to ±1,000 V
Up to ±1,000 V
700 μV
700 μV
20,000 rdg/s
20,000 rdg/s
20,000 rdg/s
20,000 rdg/s
√
√
Graphical capability (Meter View, Graph View, Histogram View, Roll View), Auto navigation, 100,000 points sample
buffer, Interface (USB, LAN, GPIB, LXI Core), Free PC control software, etc.
B2983A
6½ digits
0.01 fA - 20 mA
2 pA
03 | Keysight | B2980A Series Femto/Picoammeter and Electrometer/High Resistance Meter - Data Sheet
The World’s Only Graphical Picoammeter/Electrometer that can
Confidently Measure Down to 0.01 fA and Up to 10 PΩ
0.01 fA digit
Battery
Best-in-class 2 pA to 20 mA
current measurement ranges
and internal 1,000 V sourcing
capability ensure accurate
0.01 fA and 10 PΩ measurements
Test Setup Integrity Checking
function and dedicated
accessories ensure maximum
measurement accuracy
Many materials science and device
characterization applications require
the ability to measure very small
currents that conventional DMMs
(digital multi-meters) cannot handle.
Since the B2980A series provides
a best-in-class 0.01 fA current
measurement resolution in both
its Femto/Picoammeter and
Electro-meter versions, it can
perform precise and detailed
measurements that were previously
impossible using conventional
picoamme­ters and electrometers.
Therefore, you are assured that your
current measurement requirements
will be met well into the future.
1. B2983A and B2987A
2. B2985A and B2987A
–– Material science (Biomaterials, ceramics, elastomers, films, dielectric materials,
electrochemical, ferroelectric materials, graphene, metals, organic materials, nanomaterials, polymers, semiconductors, etc.)
–– Devices & electronic components (capacitors, resistors, diodes, sensors, transistors
including TFT and CNT, optoelectronics, solar cells, etc.)
–– Electronic/non-electronic systems (ion beam, electron beam, sensing systems,
particle measurements, embedded precision instruments, etc.)
10 A
1A
1 mA
1 μA
1 nA
1 pA
1 fA
B2985A / B2987A
electrometer
Application Examples
Typical current
measurement ranges
B2981A / B2983A
Femto/picoammeter
–– 0.01 fA (10 -17 A) minimum measurement resolution and 2 pA to 20 mA current
–– measurement ranges with 6.5 digits resolution
–– < 20 μV burden voltage in its lowest current range
–– High speed reading rate up to 20,000 rdg/s
–– Battery operation models for line noise free measurements1
–– Built-in ± 1,000 V voltage source2
–– Measurement resistances up to 10 PΩ (1016 Ω)2
–– > 200 TΩ input impedance for up to 20 V voltage measurement 2
–– Independent current and voltage measurement 2
–– Charge measurement down to 2 nC range with 6.5 digits resolution2
–– Temperature and humidity measurements2
–– Graphical viewing modes (Meter, Graph, Histogram and Roll View)
–– Easy-to-use auto navigation to select optimal range and aperture
–– Optional Test Setup Integrity Checker function for noise source isolation
–– Versatile interface (USB 2.0: LAN, GPIB, LXI Core)
–– USB (front): store data, save/recall setup information
–– Free PC control software
Why is 0.01 fA resolution
important?
Conventional
electrometer
B2980A Series Key Features
Conventional
picoammeter
Real-time histogram provides
quick statistical analysis of
measurement data
DMM
Time domain view (roll view)
enables capture of transient
signal effects and selection of
desired measurement data
Battery operation eliminates
AC power line noise from
measurements
04 | Keysight | B2980A Series Femto/Picoammeter and Electrometer/High Resistance Meter - Data Sheet
The B2980A series’ unmatched 0.01 fA resolution combines with other
unique features to solve previously intractable measurement challenges
How fast can the B2980A
series capture data?
Aperture
Overhead
Overhead
Keysight B2980A series
Aperture
Aperture
Conventional instrument
Aperture
All low-level measurements carry with them a degree of statistical uncertainty due to
inherent fluctuations in the measurement environment. The conventional method to deal
with this issue involves post-measurement evaluation of the data (usually on a PC) using
a histogram. However, this process can become tedious if you need to perform several
measurement and test setup debug cycles.
Aperture
Solution 2. You can instantly view and evaluate data distributions
using the real-time histogram feature
Aperture
How does the measurement
result distribute?
Original waveform
Aperture
Challenge 2: Instruments with only
numeric displays often exhibit instability
in their least significant digits and offer
no information about the measurement’s
mean and standard deviation.
Aperture
Data recorded up to 100,000 points
Aperture
Time domain view (Roll View)
However, conventional instruments
often cannot capture fast transients
due to their relatively slow reading
rates that require long overhead
after the aperture closes. In
contrast, the B2980A series’ fast
reading rate (20,000 rdg/s) and
streamlined system architecture
greatly reduce overhead time. As
a result the B2980A series does
not lose data sampling capability
even in its minimum PLC setting,
allowing it to capture more detailed
DUT responses. The example
below compares the data sampling
capability of a conventional
instrument with that of the B2980A
series. As this example shows, the
B2980A series can capture data
with x4 better timing resolution due
to its low measurement overhead.
Overhead
The B2980A series’ GUI provides a Roll View that can graphically display data as it is
taken and that also can store up to 100,000 of these data points for later retrieval. With
a sampling rate of up to 100 kHz, the Roll View can reveal real-time measurement trends
and provide valuable insights into the dynamics of your DUT’s behavior. To facilitate this
data analysis, the B2980A series provides flexible graphing capabilities. In Graph View
the electrometers can plot I-V curves on their displays using values from either the
internal voltage source or voltage measurement data. In addition, it is easy to generate
a variety of other X-Y plots such as I-t, V-t, R-t, Q-t, I-R, etc. (specific graphical display
capabilities depend on product model). These powerful and versatile graphical capabilities
allow you to gain valuable insights when making sensitive measurements.
Aperture
Solution 1. The B2980A series’ time domain view (Roll View) lets you
visually choose when to capture data.
Aperture
When
should
I take
When should
I take
the the
measurement data?
measurement
data?
Measurement speed is usually
determined by the aperture time of
the integration setting, which is typically proportional to some number
of power line cycles (PLCs). Smaller
aperture times are obviously more
desirable as long as they provide
sufficient averaging to prevent
power line noise from affecting the
measurement.
Measured level
RUN
Aperture
RUN
Measured level
RUN
Aperture
RUN
Measured level
Challenge 1: Instruments that only
have numeric displays do not give
you any control over when to take
data during a transient response.
05 | Keysight | B2980A Series Femto/Picoammeter and Electrometer/High Resistance Meter - Data Sheet
In contrast the B2980A’s real-time and auto-scalable histogram display capability
continuously updates the mean and sigma, enabling you to debug your measurement
setup instantly without the need for any post-measurement data crunching. The
histogram can be displayed in the Meter View, allowing you to compare accumulated
data on the histogram with real-time numeric data. Note: The maximum number of data
points supported by the histogram is 100,000.
100 BINS
On Meter View
Histogram View
How much lower is the
B2980A series’ noise floor?
Even when operating in AC mode with
0.1 PLC integration time, the B2980A
series’ advanced design provides
current measurement performance
that is much better than conventional
picoammeters and electrometers. The
graph shown below compares current
measurement noise levels under
identical measurement conditions.
As can be seen the B2980A series
can make both lower noise and faster
measurements, which reduces the
trade-offs that normally need to be
made between these two goals.
Normalized 2 nA range RMS noise
0.1 PLC, 3 m triaxial cable
A: High-end electrometer
B: Picoammeter with V source
C: Digital electrometer (3 nA range)
18
40 BINS
20 BINS
10 BINS
Available BINS: 10, 20, 40 and 100
Challenge 3: Eliminating noise from
low-level measurements is difficult and
often requires extensive measurement
expertise.
Normalized RMS noise
16
14
12
10
8
6
4
2
0
B2980A
A
B
C
What makes Keysight
triaxial cables superior?
Solution 3. The B2980A series’ battery operated models eliminate
power line noise and enhance low noise measurement performance.
AC power line noise strongly impacts sensitive measurements. While integrating
over one or more PLCs can minimize AC power line noise effects, even the B2980A’s
excellent noise performance cannot eliminate 100% of this noise unless the instrument
is completely isolated. Therefore, both the Femto/Picoammeter and Electrometer have
available battery operated versions that enable you to make power-line-noise-free
measurements. The two battery models can function for 7 hours (B2983A) or 5 hours
(B2987A) under normal operating conditions, and they also automatically save your
measured data and measurement setup information if the battery level goes below 5%.
Of course, besides eliminating noise the battery models provide the added benefit of
portability allowing you to use them anywhere you want.
Triaxial cables, which are available
from a variety of sources, are required
for low-current measurement applications. Keysight triaxial cables employ
a semiconductor layer between the
insulator and inner jacket, which
minimizes the triboelectricity generated by friction at these boundaries.
The net result is that Keysight triaxial
cables are largely unaffected by
cable vibration, which enables more
accurate and stable measurements.
All B2980A products come with a
1.5 meter version of this triaxial cable.
Inner jacket
Outer jacket
Conductor
Insulation
Inner shield
Outer shield
Off-the-shelf triaxial cable
Battery charge
staus indicator
Semiconductor
layer
Conductor
Insulation
The battery is automatically charged
when connected to AC power
Battery
operation
indicator
Inner jacket
Inner shield
Outer jacket
Outer shield
Keysight standard triaxial cable
06 | Keysight | B2980A Series Femto/Picoammeter and Electrometer/High Resistance Meter - Data Sheet
Challenge 4: Verifying the integrity of
measurement cabling is essential for
accurate measurements, but conventional
instruments do not offer any means to
validate cable performance.
How much faster is the
B2980A series’ settling
time?
The B2980A series also has specialized accessories available to facilitate certain types
of measurements. For example, the N1413A High Resistance Meter Fixture Adapter
allows you to use the B2980A series with Keysight’s accessories for high resistance
measurement (such as the 16008B Resistivity Cell). A High Resistance Measurement
Universal Adapter (N1414A) is also available to simplify the cabling for high resistance
measurements.
Example showing how to use
the Setup Integrity Checker
Take out DUT/sample
before start checking
Connector A
Connector B
± 0.1 % of final value
Final
value
Measured data
When performing sensitive measurements making appropriate cabling connections is
often one of the more difficult challenges. Many factors can contribute to measurement
noise or instability, including incorrect cabling, poor cable quality and improper
guarding; however, determining the root cause of a measurement fixturing issue from
among all of these factors is not easy. Conventional instruments do not provide any
help to solve these types of issues and they typically only offer written guidance on
best practices. In contrast, the B2980A series has an available Setup Integrity Checker
function that can identify noise caused by external elements (cables, adapters, shields,
chambers, etc.) and display the information in tabular format on the front-panel GUI. As
shown below, the setup integrity checker function allows you to compare the noise level
of the instrument with no cables connected against the noise level with different setup
elements connected. By comparing the noise level standard deviation of different setup
elements side by side, you can easily determine the quality of cables and other setup
elements necessary for your measurements.
B2980A
settling to 0.1%
Conventional
electrometer’s
settling to 0.1 %
Time
20 pA range settling time
2 V step, 100 GΩ, 1 PLC
B2980A
6
5
Cable A
Expected
noise level
with Cable A
Cable B
Cable A
NOISE
Unexpected
noise level
with Cable B
Cable A
Cable B
Noise source finally isolated
Case,
Shield
The B2980A series is
optimized for fast 0.1 %
settling time.
4
3
2
1
0
Original setup
Conventional electrometer A
7
Settling time [s]
Solution 4. Optional software and dedicated accessories help
mitigate cabling complexities
When comparing instrument settling
times, you need to understand
how each instrument defines this
specification. Most conventional
instruments define settling time
as the time it takes to reach 10%
of the final value, whereas the
B2980A series uses a value of 0.1%.
By reducing dielectric absorption
(DA), the B2980A achieves a
faster settling time using the 0.1%
limit even in its lower measurement
ranges as shown below.
10% of final value
0.1% of final value
07 | Keysight | B2980A Series Femto/Picoammeter and Electrometer/High Resistance Meter - Data Sheet
Innovative measurement functions enable both novice and experienced users
to utilize all of the B2980A series’ powerful measurement capabilities
Selecting the appropriate range and aperture time for low-level measurements is
not always straightforward, since these settings are affected by both target device
or sample characteristics and measurement conditions (noise, temperature, humidity,
etc.). For these reasons, selecting the optimal test settings can be challenging for even
experienced users. However, the B2980A series has a variety of assist functions to
improve your measurement productivity.
The navigation keys enable you to easily find the optimal measurement range and
aperture time (speed) parameters. The column at the right shows how the navigation
keys work.
−
Pressing the
Home key
automatically
sets the most
appropriate
range and speed
at any time
Measurement range
High 
+
Current
measurement
20 mA
2 mA
200 μA
20 μA
2 μA
200 nA
20 nA
2 nA
200 pA
20 pA
2 pA
Voltage
measurement
20 V
2V
Coarse
Resistance
measurement
1 PΩ
100 TΩ
10 TΩ
1 TΩ
100 GΩ
10 GΩ
10 GΩ
100 MΩ
10 MΩ
1 MΩ
Coarse
Stable
Normal
Quick
Fine
Charge
measurement
2 μC
200 nC
20 nC
2 nC
Fine
Aperture time (Integration time)
Long 
The “Real-time Noise Monitor” helps you to select the appropriate measurement
settings by showing you the level of noise in your measurement. With this information
you immediately know whether or not your measurement result is above or below the
noise level. In addition, you can use this feature to select the appropriate aperture time
(integration time) for your measurement environment.
How does the Navigation
feature work?
The B2980A series possesses an
innovative measurement navigation
capability that helps users optimize
both aperture time and measurement range. As shown below, it has
three pre-programmed range vs.
aperture curves that cover most
logical combinations. By default
measurements start using the
“Normal” curve and an appropriate
measurement range. However, if the
measured data seems noisy then
pressing the “Fine Res” key switches
the settings over to the “Stable”
curve. This will automatically adjust
the settings to a longer aperture
time and reduce the noise. In
addition, if you need to make a
rough measurement quickly then
switching over to the “Quick” curve
will save measurement time.
The Navigation feature’s pre-defined
curves enable even novice engineers
and researchers to make low-level
measurements quickly without any
need to struggle over selecting the
appropriate aperture time and range
settings. Of course, experienced
users can override these curves and
use the instrument in purely manual
mode if a particular measurement
requires customized settings.
Measurement range
High 
Measurement assist functions reduce low-level measurement
challenges
Quick
Normal
Stable
Aperture time (Integration time)
Long 
Noise level
Measured
value
Current aperture time =
1 PLC (20 ms @ 50 Hz)
08 | Keysight | B2980A Series Femto/Picoammeter and Electrometer/High Resistance Meter - Data Sheet
Free PC-based software and multiple interface options
provide flexible remote control choices
Keysight provides two PC-based software control options for the B2980A series:
B2900A Quick I/V Measurement Software and a B2900A Graphical Web Interface.
Quick I/V software can communicate with the B2980A series via several popular interfaces:
LAN, GPIB (up to four B2980A series units) and USB (one B2980A series unit). It provides
almost the same functionalities of your B2980A series’ front panel. In addition, it supports
a function that can automatically export measurement data into Microsoft Excel on your
PC for further analysis. The Web Interface is embedded in each instrument and is only
accessible via the LAN interface using a PC.
The Quick I/V Measurement Software also supports other B2900A precision instrument
products (B2900A series of Source / Measure Units and B2960A series of Low Noise
Power Sources).
PC connected via
GPIB, LAN or USB
Keysight
B2900A
Quick I/V
measurement
software
What are the B2980A
series’ temperature and
humidity measurement
capabilities?
Temperature and humidity are
critical parameters for high
resistance measurements. The
B2985A and B2987A electrometers
contain both temperature and
humidity sensor interfaces, and a
dedicated thermocouple (N1423A)
is furnished with these models. The
EE07 Digital Humidity/Temperature
Probe from E+E Electronik can be
used for humidity and temperature
sensing, which provides more
accurate temperature data than
a thermocouple
For more information
Keysight
B2980A
Graphical web
interface
Please visit the product web
pages containing demo videos,
application information, sample
programs, etc. from:
www.keysight.com/find/b2980a
B2980A series
Femto/Picoammeter
Electrometer
Ready-to-use instrument drivers simplify programming
For users that want to create their own customized software, IVI-C and IVI-COM drivers
for the B2980A series are available. In addition, National Instrument’s LabVIEW drivers
are also available at NI.COM.
Keysight B2900A family
The B2980A series is a member of B2900 Precision Instrument Family, which provide a variety of precision measurement solutions with
both sourcing and measurement capabilities. The B2900A series of Source Measure Units (SMUs) have 6.5-digit resolution, enabling
100 nV/10 fA sourcing and measurement. The B2960A series of Low Noise Power Sources have up to 6.5-digit voltage/current sourcing
resolution and a 10 μVrms noise floor. Both the B2900A series SMUs and B2960A series Power Sources have an output range of
± 210 V and ± 3 A (DC) or ± 10.5 A (pulsed), and they both utilize the same color LCD-based GUI. Further information on the B2900
Precision Instrument Family is available at http://www.keysight.com/find/b2900a.
B2900A Source Measure Unit
B2960A Low Noise Power Source
09 | Keysight | B2980A Series Femto/Picoammeter and Electrometer/High Resistance Meter - Data Sheet
USB 2.0 for
memory I/O
4.3” color LCD
Battery indicator
(B2983A)
Rotary knob and
instant save & recall
USB 2.0 for
memory I/O
Current input
ON/OFF switch
Power switch
Ammeter input
Navigation
keys
Ammeter
input
Trigger IN/OUT
LAN
USB 2.0
GPIB
Voltage
source output
Analog out
B2981A, B2983A
Femto/Picoammeter
Voltmeter
input
Trigger IN/OUT
Digital
I/O
LAN
Rotary knob and
instant save & recall
Navigation keys
Voltage source
ON/OFF switch
Power switch
Digital I/O
Analog out
Battery indicator
(B2987A)
4.3” color LCD
Interlock
USB 2.0
Current input
ON/OFF switch
Humidity sensor
I/F (digital)
GPIB
Thermocouple I/F
B2985A, B2987A
Electrometer/High Resistance Meter
Compatibility table for optional high performance accessories and productivity tools
Product
Femto/Picoammeter
B2981A
B2983A
16494A Triaxial cable
(0.4 m, 0.8 m, 1.5 m, 3 m, 4 m)
N1413A High resistance meter fixture adapter
N1414A High resistance measurement universal adapter
16008B Resistivity cell
N1418A Lithium-ion battery pack
√
(1.5 m furnished)
√
(1.5 m furnished)
N1420A Setup integrity checker for B2980 series
(software license)
√
√
(furnished)
√
Electrometer/High Resistance Meter
B2985A
B2987A
√
(1.5 m furnished)
√
√
√
√
B2980A accessories for high measurement performance and convenience
16494A, N1412A/B/C
16008B
N1414A
N1413A
√
(1.5 m furnished)
√
√
√
√
(furnished)
√
10 | Keysight | B2980A Series Femto/Picoammeter and Electrometer/High Resistance Meter - Data Sheet
Technical Specifications and Characteristics
Specification conditions
Temperature: 23 °C ± 5 °C
Humidity: 30% to 80% RH
After 1 hour warm-up
Ambient temperature change: less than ± 3 °C after self-calibration
Calibration period: 1 year
Current measurement
Measurement range
Display resolution
Accuracy
± (% + offset)
2 pA
1 aA
1 + 3 fA
20 pA
10 aA
0.5 + 3 fA
200 pA
100 aA
0.5 + 5 fA
2 nA
1 fA
0.2 + 300 fA
20 nA
10 fA
0.2 + 500 fA
200 nA
100 fA
0.2 + 5 pA
2 μA
1 pA
0.1 + 50 pA
20 μA
10 pA
0.05 + 500 pA
200 μA
100 pA
0.05 + 5 nA
2 mA
1 nA
0.05 + 50 nA
20 mA
10 nA
0.05 + 500 nA
Temperature coefficient 0 to 18 °C and 28 to 45 °C
± (0.05 x Accuracy)/°C
Input burden voltage at
SelfCal ± 3 °C1
20 μV
20 μV
20 μV
20 μV
20 μV
20 μV
20 μV
20 μV
100 μV
1 mV
6 mV
Measurement settling
time1, 2
16 s
1.4 s
1.4 s
13 ms
13 ms
1.2 ms
550 μs
600 μs
600 μs
100 μs
100 μs
Supplemental characteristics
Temperature coefficient of input voltage burden
RMS noise
NMRR3
Maximum input capacitance
< 10 μV/°C on pA, nA and μA ranges
140 aA for 2 pA range, 10 s duration, no cable, open cap
> 60 dB
10 nF on less than 20 μA ranges, 1 μF on other ranges
Notes
Conditions: properly zeroed, 6½-digit, 1 PLC, median filter on, moving average 10 points
1. Supplemental characteristics
2. 0.1% of final value, step size 0% to 100% of range
3. Normal mode rejection ratio, integration time = 1, 2, …, 100 PLC; power line frequency ± 0.1%
Resistance measurement
Measurement range
Display resolution
1 MΩ
1Ω
10 MΩ
10 Ω
100 MΩ
100 Ω
1 GΩ
1 kΩ
10 GΩ
10 kΩ
100 GΩ
100 kΩ
1 TΩ
1 MΩ
10 TΩ
10 MΩ
100 TΩ
100 MΩ
1 PΩ
1 GΩ
Temperature coefficient 0 to 18 °C and 28 to 45 °C
Accuracy ± (% + offset)1, 2
0.135 + 1 Ω
0.135 + 10 Ω
0.185 + 100 Ω
0.285 + 1 kΩ
0.285 + 10 kΩ
0.41 + 100 kΩ
0.45 + 1 MΩ
0.625 + 10 MΩ
0.75 + 100 MΩ
2.6 + 1 GΩ
± (0.1 x Accuracy)/°C
Auto voltage source
20 V
20 V
20 V
20 V
20 V
20 V
200 V
200 V
200 V
200 V
Current measure range
200 μA
20 μA
2 μA
200 nA
20 nA
2 nA
2 nA
200 pA
20 pA
2 pA
Notes
Conditions: Auto V-source ohms, properly zeroed, 6½-Digit, 1 PLC, median filter on, digital filter = 10 readings.
1. In the manual mode resistance can be calculated from specific source voltage and measured current. The measurement accuracy in the manual mode is
determined by voltage source accuracy and ammeter accuracy as follows: Measurement Error = R reading x (Voltage % error + Voltage offset error/
Voltage + Current measurement % error + 10 x Current measurement offset error / Current measurement range)
2. Current measurement range for both Auto and Manual modes: 10% of current range ≤ measured current ≤ 100% of current range
11 | Keysight | B2980A Series Femto/Picoammeter and Electrometer/High Resistance Meter - Data Sheet
Voltage measurement
Measurement range
Display resolution
2V
1 μV
20 V
10 μV
Temperature coefficient 0 to 18 °C and 28 to 45 °C
Supplemental characteristics
Input bias current
Input impedance
RMS noise
NMRR1
CMRR2
Accuracy ± (% + offset)
0.025 + 40 μV
0.025 + 400 μV
± (0.05 x Accuracy)/°C
< 20 fA
> 200 TΩ, parallel with < 20 pF (non-guarded) or < 2 pF (guarded)
1.4 μV for 2 V range, 10 s duration, shorted input
> 60 dB
> 140 dB at DC; > 70 dB at 50 Hz or 60 Hz
Notes
Conditions: properly zeroed, 6½-digit, 1 PLC
1. Normal mode rejection ratio, integration time = 1, 2, ..., 100 PLC; power line frequency ± 0.1 %
2. Common mode rejection ratio: 1 kΩ LO lead unbalance. Add the NMRR for PLC integration time.
Charge measurement
Measurement range
Display resolution
2 nC
1 fC
20 nC
10 fC
200 nC
0.1 pC
2 μC
1 pC
Temperature coefficient 0 to 18 °C and 28 to 45 °C
Accuracy 1 ± (% + offset)
0.4 + 50 fC
0.4 + 500 fC
0.4 + 5 pC
0.4 + 50 pC
± (0.1 x Accuracy)/°C
Notes
Conditions: Properly zeroed, 6½-digit, 1 ms aperture, specifications apply at 1 to 10 ms after charge acquisition.
1. Add 6 fC/s to the accuracy specification for the time span between NULL and measurement
Voltage source
Sourcing range
Display resolution
Accuracy ± (% + offset)
Output current1
Output noise2
20 V
700 μV
0.05 + 2 mV
± 20 mA
1000 V
35 mV
0.05 + 100 mV
± 1 mA
55 μVp-p
(0.1 Hz to 10 Hz)
1.6 mVrms
(10 Hz to 20 MHz)
2.6 mVp-p
(0.1 Hz to 10 Hz)
3.0 mVrms
(10 Hz to 20 MHz)
Temperature coefficient 0 to 18 °C and 28 to 45 °C
Source function
Settling time to
rated accuracy 1,3
200 μs
5 ms
± (0.05 x Accuracy)/°C
DC, sweep (linear single, linear double, list), ARB (square)
Notes
1. Supplemental characteristics
2. 10 Hz to 20 MHz: Supplemental characteristics
3. Open load
Temperature measurement (Thermocouple)
Temperature sensor
Type-K thermocouple
Temperature probe in humidity sensor 2
Range
–25 °C to 150 °C
–40 °C to 80 °C
Accuracy ± (% + offset)1
0.2% + 2 °C
0.5 °C
Notes
1. Thermocouple accuracy excluded for thermocouple, temperature probe accuracy included for humidity sensor
2. Supported humidity sensor: EE07 Digital Humidity / Temperature Probe from E+E Electronik
Unit
°C, °F and K
°C, °F and K
12 | Keysight | B2980A Series Femto/Picoammeter and Electrometer/High Resistance Meter - Data Sheet
Humidity measurement
Range
0 % to 100 %
Connector
Supported sensor
Accuracy 1
2 % RH (0 % to 90 % RH)
3 % RH (90 % to 100 % RH)
2.5 mm pluggable terminal block, 5 pins (mating with Phoenix Contact 1881354)
EE07 Digital Humidity / Temperature Probe from E+E Electronik
Notes
1. Sensor accuracy included
Measurement buffer and speed
Reading buffer
100,000
Supplemental characteristics
Measurement
Reading rates
speed and
performance
Additional noise error
Integration time1
To buffer
To GPIB
Current measurement
Voltage measurement
100 PLC / 2 s
10 PLC / 200 ms
0.5 Readings/s
5 Readings/s
0.5 Readings/s
5 Readings/s
0% of range
0% of range
0% of range
0% of range
1 PLC / 20 ms
0.1 PLC / 2 ms
0.01 PLC / 200 μs
0.001 PLC / 20 μs
49 Readings/s
500 Readings/s
4,500 Readings/s
20,000 Readings/s
49 Readings/s
490 Readings/s
3,950 Readings/s
12,500 Readings/s
0.01% of range
0.03% of range
0.06% of range
0.1% of range
0% of range
0.0005% of range
0.001% of range
0.004% of range
Notes
1. 50 Hz, fixed range
Timer and trigger functions
Timer
Time stamp
Resolution
Triggering1
TIMER value automatically saved when each measurement is triggered
10 μs, 100 μs, 1 ms, 10 ms, 100 ms
Min. Measurement Interval
Min. Source Interval
Accuracy
Arm/trigger delay
Arm/trigger interval
Arm/trigger count
Trigger in to trigger out
Trigger in to source change
Trigger in to measure
Internal event to external LXI trigger
LXI event send/receive latency
10 μs, independent from Source
100 μs, independent from Measure
± 50 ppm
0 μs to 100,000 s
10 μs (Measure), 100 μs (Source) to 100,000 s
1 to 100,000 counts or infinity
≤ 5 μs
≤ 200 μs
≤ ± 20 μs
Minimum 100 µs, Typical 200 µs, Maximum unknown
Unknown
Notes
1. Supplemental characteristics
Battery operation (B2983A, B2987A)
Technology
Capacity
Battery exchange
Supplemental characteristics
Typical operating time1
Recharging time
Battery life
Li-ion battery with integrated smart battery monitor and charger
14.40 V / 6,600 mAh / 95.0 Wh
Customer exchangeable
7 hours (B2983A), 5 hours (B2987A), 5 % to shutdown, auto data save
7 hours to 100 % capacity (AC in, Power On), 3.5 hours to 100 % capacity (AC in, power Off)
> 300 cycles with minimum 75 % of initial capacity @25 °C
Notes
1. Standalone, LCD on, input on, output off, auto triggered 2 µA fixed range
13 | Keysight | B2980A Series Femto/Picoammeter and Electrometer/High Resistance Meter - Data Sheet
Measurement control/navigation
Ranging
Aperture time (integration time)
Offset cancelling
Digital filter
Math
Statistics
Line frequency detection
Measurement indicators
Front panel operation
Front panel interface
View mode
Hardkeys
Softkeys
Indicators
LEDs
Application softkey
Input/Output specifications
Meter input connector
Guard
Maximum input
Source output connector
Maximum common mode voltage
Isolation (Meter common to chassis)
Analog output
Interlock
External trigger
Trigger input
Logic
Min pulse width
Trigger output
Logic
Min pulse width
Automatic or manual
10 μs to 100 PLC
Null, Zero correct
Median filter (2R + 1, R = 1 to 15), moving average (1 to 100, step 1)
Preset and user definable expressions
Histogram View mode: mean, sigma, # of bins and # of samples
Auto detect: 50 Hz or 60 Hz
"---" is displayed at no data captured, "OVERFLOW" is displayed over 105% of the range, "0 Ω" is displayed at
current measurement overflow in Resistance measurement.
4.3" TFT color display (16,000,000 colors, 480 x 272 pixels) with keypads and rotary knob
Meter view, Graph view, Histogram view and Roll view
Single Trigger and Run/Stop control, measurement navigation keys (Null, Filter, Math, Save and Recall),
Rotary Knob and Cursors, Ammeter Input and V Source Output control, Cancel/Local
Function, System and Input Assist Keys
Channel (measurement) status, System status
Power (color changes when charging), Input and Output (color changes when high voltage sourcing), Battery
status (B2983A, B2987A)
Setup Integrity Checker (optional), Data logger, Demo Slide Show, About B2987A
Meter view
Graph view
Histogram view
Roll view
Three lug triaxial for ammeter on rear panel (B2981A, B2983A)
Three lug triaxial for ammeter, and three lug triaxial for voltmeter on rear panel (B2985A, B2987A)
Switchable voltmeter guard available (B2985A, B2987A)
Ammeter: 30 mA, Voltmeter: 40 V
Two banana jacks on rear panel
Meter common: 500 V peak: V Source 1,000 V peak
> 10 GΩ, < 500 pF
2 V for full range input, non-inverting in voltage and current measurement modes, 1 kΩ output impedance
2.5 mm pluggable terminal block, 4 pin (mating with Phoenix Contact 1881341)
BNC
Programmable edge triggered
10 μs
BNC
Programmable edge triggered
10 μs
14 | Keysight | B2980A Series Femto/Picoammeter and Electrometer/High Resistance Meter - Data Sheet
Input/output specifications
Digital I/O
Connector type
Input/output pins
Absolute max input voltage
Absolute min input voltage
Max logic L input voltage
Min logic H input voltage
Max source current
Max sink current
5 V power supply pin
Conputer interfaces
LXI (Rev. 1.4)
USB
GP-IB
Program, software and drivers
Programming
Program memory
LXI compliance
Software available
Drivers available
Environmental specifications
Environment
Operating
Storage
Altitude
Power supply
EMC
Safety
Certifications
Warm-up
Dimensions
Case
Working
Weight
Net
Shipping
DSUB female 9 pins
DIO 7 pins, +5V, GND
5.25 V
–0.25 V
0.8 V, Pull-up to 5 V by 5 kΩ
2.0 V, Pull-up to 5 V by 5 kΩ
1 mA @ Vo = 0 V
50 mA @ Vo = 5 V
Limited to 500 mA, resettable fuse protected
10/100Base-T Ethernet (Sockets, VXI-11 protocol, HiSLIP, and Web user interface)
USB 2.0 (USB-TMC488 and MTP)
USB host controller on the front, USB device interface on the rear
Easy File Access
IEEE-488.2
SCPI
100 kB (1000 lines with 100 characters/line)
LXI Core 2011
Quick I/V Measurement Software, Graphical Web Interface
IVI-C, IVI-COM drivers, LabVIEW drivers
For use in indoor facilities without air conditioning
0 °C to 45 °C (0 °C to 35 °C when charging battery), 30 % to 80 % non-condensing
-20 °C to 60 °C, 10 % to 90 % non-condensing
Operating: 0 m to 2000 m, Storage: 0 m to 4600 m
90 V to 264 V, 47 Hz to 63 Hz, 80 VA maximum
IEC61326-1/EN61326-1, AS/NZS CISPR 11, KC: RRA Notification amending Radio Waves Act Article 58-2
IEC61010-1/EN61010-1, CAN/CSA-C22.2 No. 61010-1-12, C/US
CE, cCSAus, RCM, KC
1 hour
88 mm (2U) x 213 mm (half width) x 348 mm
104 mm x 261 mm x 374 mm (with bumper)
4.3 kg (B2981A), 4.9 kg (B2983A), 4.5 kg (B2985A), 5.1 kg (B2987A)
8.5 kg (B2981A), 9.0 kg (B2983A), 8.7 kg (B2985A), 9.2 kg (B2987A)
15 | Keysight | B2980A Series Femto/Picoammeter and Electrometer/High Resistance Meter - Data Sheet
Furnished
accessories
Power cable, USB cable, Triax cable (1.5m), Ground connection cable, Banana to screw-lug, Earthing wire(2m), Open cap for Triax.
Connector, Quick Reference (English), CD-ROMs (including PDF manuals, Quick I/V Measurement Software and drivers, Keysight
I/O Library Suite
In addition to the above, B2985A/B2987A includes the followings:
High voltage test leads, alligator clips, thermocouple, Interlock connector head, humidity probe connector head.
Ordering Information
Model number
B2981A
B2983A
B2985A
B2987A
Options
A6J
UK6
B2980A-1CM
Manuals
N1403A-ABA
N1403A-ABJ
Accessories
N1411A/B
N1413A
N1414A
N1415A
N1416A/B
N1417A
N1418A
N1419A
N1423A
16494A-001/002/005
N1412/A/B/C
N1254A-102
N1254A-104
N1254A-105
16008B
Productivity tools
N1410A
N1420A
N1422A
N1299A-301
Description
Femto/Picoammeter. 0.01 fA
Femto/Picoammeter. 0.01 fA, battery
Electrometer/High Resistance Meter, 0.01 fA, 1000 V
Electrometer/High Resistance Meter, 0.01 fA, 1000 V, battery
ANSI Z540-1-1994 Calibration
Commercial calibration certificate with test data
Rack Mount Kit
User Guide English for B2980 Series
User Guide Japanese for B2980 Series
Interlock cable, 4 pin terminal plug to 6 pin circular plug, (1.5 m/3 m)
High resistance meter fixture adapter
High resistance measurement universal adapter
Triax to alligator cable, 200 V, 1.5 m
Triax bulkhead connector (200 V/500 V)
Open cap for triaxial connector
Lithium-ion battery pack for B2983/B2987
Benchtop battery charger for N1418A
Thermocouple for B2985/B2987
Low leakage triax cable (1.5 m/3 m/4 m)
Low leakage triax cable (500 V, 1.5 m/3 m/6 m)
Triax (female) to BNC (male) adaptor: For current measurement, floating DUT/sample
Triax (female) to BNC (male) adaptor: For current measurement, grounded DUT/sample
Triax (female) to BNC (male) adaptor: For voltage measurement
Resistivity cell
Starter kit for B2985/B2987
Setup integrity checker for B2980 series, fixed perpetual license
High value resistor box for N1299A-301 evaluation kit
Evaluation kit for B2981/83/85/87A
16 | Keysight | B2980A Series Femto/Picoammeter and Electrometer/High Resistance Meter - Data Sheet
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