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B2980B Series
Femto/Picoammeter and
Electrometer/High
Resistance Meter
The world’s only graphical Picoammeter/Electrometer that can
confidently measure down to 0.01 fA and up to 10 PΩ
Configure Your Keysight B2980B Series Femto/Picoammeter and Electrometer
Keysight B2980B Series consists of the following four models.
•
B2981B Femto/Picoammeter, 0.01fA
•
B2983B Femto/Picoammeter, 0.01fA, Battery
•
B2985B Electrometer/High Resistance Meter, 0.01 fA, 1000V
•
B2987B Electrometer/High Resistance Meter, 0.01 fA, 1000V, Battery
This configuration guide contains a step-by-step process to help you configure your Femto/Picoammeter
and Electrometer and related accessories to meet your specific test requirements.
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Step 1. Select a B2980B Series model
First, you’ll need to decide on either a picoammeter or an electrometer based on your required
measurement parameters and either a battery model or not based on your requirement for realizing low
noise measurement. This will then determine which B2980B model is best for you. Please note that the
B2980B Series are not upgradable later on.
Measurement Parameters
Voltage
Source
Battery
Operation
Current
Voltage
Resistance
Charge
Femto/
Picoammeter
B2981B √
B2983B √ √
Electrometer
B2985B √ √ √ √ √
B2987B √ √ √ √ √ √
Additional information
0.01 fA to
20 mA
1 μV to
20 V
< 10 PΩ
1 fC to
2 μC
Up to
± 1,000 V
The following items are supplied as standard with each B2980B Series model:
Standard furnished items
Number of pieces
Description
Orderable parts
number
B2981B
B2983B
B2985B
B2987B
1
Quick startup poster/Quick
reference
NA
1ea
1ea
1ea
1ea
2
Power cord
NA
1ea
1ea
1ea
1ea
3
Earthing wire (2 m)
NA 1ea 1ea 4 USB cable
8121-1696
1ea
1ea
1ea
1ea
5
Ground connection cable, Banana
to Screw-lug
B2981-61715
1ea
1ea
1ea
1ea
6
Triax cable (1.5 m, 200 V)
16494A-001
1ea
1ea
1ea
1ea
7
Open cap for Triax connector
N1417A
1ea
1ea
2ea
2ea 8 Alligator clips (black and red)
U3606-60030
1ea
1ea
9
High voltage test leads (black and
red, 1000 V)
U8201-60001
1ea
1ea
10
Thermocouple for B2985/B2987
N1423A
1ea
1ea
11
Interlock connector head
NA
1ea
1ea
12
Humidity probe connector head
NA
1ea
1ea
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Step 2. Add optional productivity tools
There are several productivity tools that can help you startup your measurement quickly and maintain
measurement integrity for your challenging sensitive measurements.
Description
Product
number
Additional Information
Applicable model
B2981B
B2983B
B2985B
B2987B
Starter kit for
B2985/ B2987
N1410A
The following items are included:
N1415A Triax to alligator clip cable,
1ea
√
√
N1414A High resistance
measurement universal adapter,
1ea
Setup integrity
checker for
B2980 series,
fixed perpetual
license
N1420A
The Setup integrity checker
measures and records the
measurement setup’s noise level,
which enables you to isolate the
cause of noise related to test setup
elements including cables,
adapters, shields, chambers, etc.
√ √ √
√
Customer installable software
license key
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Step 3. Choose optional accessories
Step 3-1. Choose a rack mount kit (optional)
Description
Product
number
Additional Information
Applicable model
B2981B
B2983B
B2985B
B2987B
Rack
Mount Kit
1CM124A
Includes a rack mount flange and front
handle kit. Fits standard 19-inch rack
and occupies two units of rack space.
√ √ √
√
Step 3-2. Choose additional accessories for current measurements (optional)
You can add the following accessories based on your measurement requirements.
Recommended Connection
Simple Connection 1
Typical
connection
example
Current measurement connection,
Grounded
Current measurement connection,
Grounded
Recommended
accessories
16494A-001
Low leakage Triax
cable (200 V, 1.5 m,
Furnished)
N1415A
Triax to alligator cable
16494A-002/004
Low leakage Triax
cable (200 V,
3.0 m/4.0 m)
B2981-61715
Ground connection
cable, Banana to
Screw-lug (Furnished)
N1412A/B/C
Low leakage Triax
cable (500 V,
1.5 m/3 m/6 m)
N1416A/B
Triax bulkhead
connector
(200 V/500 V)
B2981-61715
Ground connection
cable, Banana to
Screw-lug
(Furnished)
1. The “Reco mm ended C onnection ” is pref erred ove r the “Ea sy Connecti on” when making se nsitive l ow -level measurements.
Shield
16494A, N1412A/B/C
Triax cable
N1416A/B
Triax bulkhead
connector
Banana-to-lug cable
(furnished)
Is
N1215A
Triax to alligator
Shield
Is
Banana-to-lug cable
(furnished)
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Step 3-3. Choose additional accessories for resistance measurements (optional)
You can add the following accessories based on your measurement requirements.
Also, you can add the optional N1414A High resistance measurement universal adapter which enables
you to simplify the cabling and monitor source voltage at high resistance measurements.
Recommended Connection
Simple Connection1
Typical
connection
example
Floating device measurement
Floating device measurement
Recommended
accessories
16494A-001
Low leakage Triax
cable (200 V, 1.5 m,
Furnished)
N1415A
Triax to alligator cable
16494A-002/004
Low leakage Triax
cable (200 V,
3.0 m/4.0 m)
U8201-60001
High voltage test lead
(Furnished)
B2981-61715
Ground connection
cable, Banana to
Screw-lug (Furnished)
N1412A/B/C
Low leakage Triax
cable (500 V,
1.5 m/3 m/6 m)
N1416A/B
Triax bulkhead
connector
(200 V/500 V)
U8201-60001
High voltage test
lead (Furnished)
N1414A
High resistance
measurement
universal adapter
(Optional)
B2981-61715
Ground connection
cable, Banana to
Screw-lug
(Furnished)
1. The “Reco mm ended C onnection ” is pref erred ove r the “Ea sy Connecti on” when making se nsitive l ow -level measurements.
Shield
U8201-60001
High voltage test lead (furnished)
N1416A/B
Triax bulkhead
connector
Rx
16494A,
N1412A/B/C
Triax cable
Banana-to-lug cable
(furnished)
Rx
Shield
U8201-60001
High voltage test lead (furnished)
N1415A
Triax to alligator
Banana-to-lug cable
(furnished)
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The B2985B/87B supports the Keysight’s accessories for high resistance measurement. The N1413A
High resistance meter fixture adapter is needed to use those accessories.
Description
Product
number
Additional Information
High resistance meter fixture
adapter
N1413A
Resistivity Cell for N1413 with
B2980 Series (50 mm Electrodes)
N1424A
The N1413A High resistance meter fixture
adapter is required to use these accessories.
Resistivity Cell for N1413 with
B2980 Series (26/50 mm Diameter
Electrodes)
N1424B
Resistivity Cell for N1413 with
B2980 Series (26/50/76 mm
Diameter Electrodes)
N1424C
Low Noise Test Leads for N1413
with B2980 series (1.5 m/3.0 m)
N1425A/B
Pin Probes for N1425
N1426A
Soldering Sockets for N1425
N1426B
Alligator Clips for N1425
N1426C
Low Noise Test Cables for N1413
with B2980 series (1.5 m/3.0 m)
N1427A/B
Component Test Fixture for N1413
with B2980 Series
N1428A
The obsoleted accessories such as the 16008B, 16117B/C, and 16339A can be used with the
B2985B/87B if you have them. The N1413A is also needed to use those accessories. The N1425A/B
Low Noise Test Leads for N1413 with B2980 series requires one of the N1426A/B/C to connect the
device under test.
N1413A High resistance
meter fixture adapter
To:
N1424A/B/C
N1425A/B
N1427A/B
N1428A
To: interlock connector
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Step 3-4. Choose additional accessories for voltage measurements (optional)
You can add the following accessories based on your measurement requirements
Recommended Connection
Simple Connection 1
Typical
connection
example
Guarded measurement connection
Guarded measurement connection
Recommended
accessories
16494A-001
Low leakage Triax
cable (200 V,
1.5 m, Furnished)
N1415A
Triax to alligator
cable
16494A-002/004
Low leakage Triax
cable (200 V,
3.0 m/4.0 m)
U8201-60001
High voltage test
lead (Furnished)
B2981-61715
Ground connection
cable, Banana to
Screw-lug
(Furnished)
N1412A/B/C
Low leakage Triax
cable (500 V,
1.5 m/3 m/6 m)
N1416A/B
Triax bulkhead
connector
(200 V/500 V)
U8201-60001
High voltage test
lead (Furnished)
B2981-61715
Ground connection
cable, Banana to
Screw-lug
(Furnished)
1. The “Reco mm ended C onnection ” is pref erred ove r the “Ea sy Connecti on” when making sensitive low-level measurements.
16494A,
N1412A/B/C
Triax cable
Shield
Guard shield
U8201-60001
High voltage
test lead (furnished)
N1416A/B
Triax bulkhead connector
Banana-to-lug cable
(furnished)
Vs
Vs
N1415A
Triax to alligator
Banana-to-lug cable
(furnished)
U8201-60001
High voltage
test lead (furnished)
Shield
Guard shield
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Step 3-5. Choose additional accessories for charge measurements (optional)
You can add the following accessories based on your measurement requirements.
Recommended Connection
Simple Connection 1
Typical
connection
example
Guarded measurement connection
Guarded measurement connection
Recommended
accessories
16494A-001
Low leakage Triax
cable (200 V,
1.5 m, Furnished)
N1415A
Triax to alligator
cable
16494A-002/004
Low leakage Triax
cable (200 V,
3.0 m/4.0 m)
B2981-61715
Ground connection
cable, Banana to
Screw-lug
(Furnished)
N1412A/B/C
Low leakage Triax
cable (500 V,
1.5 m/3 m/6 m)
N1416A/B
Triax bulkhead
connector
(200 V/500 V)
B2981-61715
Ground connection
cable, Banana to
Screw-lug
(Furnished)
1. The “Recomm ended C onnection ” is pref er red ove r the “Easy C onnecti on” when making se ns itive l ow -level measurements.
Shield
16494A,
N1412A/B/C
Triax cable
Banana-to-lug cable
(furnished)
Qs
N1416A/B
Triax bulkhead
connector
Shield
N1415A
Triax to alligator
Qs
Banana-to-lug cable
(furnished)
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Step 3-6. Choose additional accessories (optional)
You can add the following optional accessories to meet your system requirement.
Description
Product
number
Additional Information
Applicable Model
B2981B
B2983B
B2985B
B2987B
High value resistor box
for N1299A-301
evaluation kit
N1422A
√ √ √ √
Low leakage Triax
cable, 200 V, 1.5 m
16494A-001
The
B2981B/83B/85B/87B
is furnished with one
16494A-001 cable.
16494A triax cable
supports up to 200 V
and 1 A.
N1412A/B/C triax
cable supports up to
500 V and 1 A
√ √ √
√
Low leakage Triax
cable, 200 V, 3.0 m
16494A-002
√ √ √
√
Low leakage Triax
cable, 200 V, 0.8 m
16494A-003
√ √ √
√
Low leakage Triax
cable, 200 V, 0.4 m
16494A-004
√ √ √
√
Low leakage Triax
cable, 200 V, 4.0 m
16494A-005
√ √ √
√
Low leakage Triax
cable, 500 V, 1.5 m
N1412A
√ √ √
√
Low leakage Triax
cable, 500 V, 3.0 m
N1412B
√ √ √
√
Low leakage Triax
cable, 500 V, 6.0 m
N1412C
√ √ √
√
Coax cable, 1.5 m
16493B-001
16493B coax cable
supports up to 40 V
and 200 mA.
√ √ √
√
Coax cable, 3.0 m
16493B-002
√ √ √
√
BNC cable, 1.2 m
U2921A-100
√ √ √ √
Combo Test Lead Kit
U8201A
√ √ √ √
Triax bulkhead
connector 200 V
N1416A
√ √ √ √
Triax bulkhead
connector 500 V
N1416B
√ √ √ √
Open cap for triaxial
connector
N1417A
The B2981B/83B is
furnished with one
N1417A open cap
and the B2985B/87B
is furnished with two
N1417A open caps.
√ √ √
√
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Description
Product
number
Additional Information
Applicable Model
B2981B
B2983B
B2985B
B2987B
Triax (t) to BNC (m)
adapter
N1254A-102
For current
measurement,
Floating DUT/sample
√ √ √
√
Triax (t) to BNC (m)
adapter
N1254A-104
For current
measurement,
Grounded
DUT/sample
√ √ √
√
Triax (t) to BNC (m)
adapter
N1254A-105
For voltage
measurement
√
√
Triaxial (f) to Triaxial
(f) adapter,
feedthrough
1250-2618
√ √ √
√
Interlock cable, 4 pin
terminal plug to 6 pin
circular plug, 1.5 m
N1411A
The B2985B/87B is
furnished with one 4
pin plug interlock
connector head.
√
√
Interlock cable, 4 pin
terminal plug to 6 pin
circular plug, 3.0 m
N1411B
√
√
Lithium-ion battery
pack for B2983/B2987
N1418A
B2983B/87B is
furnished with one
N1418A battery.
√
√
Thermocouple for
B2985/B2987
N1423A
The B2985B/87B is
furnished with one
N1423A
thermocouple.
√
√
RS-232 cable kit for
Digital I/O connector
34398A
√ √ √ √
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Thi s info rmatio n is subjec t to change with out no tice. © Ke ysight Tec hnologies, 2021, Publis hed i n USA, Marc h 17, 2021, 312 1-1079.EN
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For more information on Keysight Technologies’ products, applications or services,
please contact your local Keysight office. The complete list is available at:
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Step 4. Choose calibration plan
Step 4-1. Choose calibration length (optional)
Keysight factory calibration is provided as standard and free of additional charges.
Description
Product number
Additional Information
Calibration + uncertainties +
guardbanding (not accredited)
B2981B-1A7
B2983B-1A7
B2985B-1A7
B2987B-1A7
Calibration certificate with measurement
results available only at time of purchase
ANSI Z540-1-1994 Calibration
B2981B-A6J
B2983B-A6J
B2985B-A6J
B2987B-A6J
Calibration certificate with measurement
results available only at time of purchase
Commercial Calibration Certificate
with Test Data
B2981B-UK6
B2983B-UK6
B2985B-UK6
B2987B-UK6
Calibration certificate with measurement
results available only at time of purchase
Calibration Assurance Plan - Return
to Service Center - 3 years
R-50C-011-3
Calibration Assurance Plan - Return
to Service Center - 5 years
R-50C-011-5
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