Keysight B2985A (Agilent) ELECTROMETER / HIGH RESISTANCE METER The Agilent B2985A Electrometer / High Resistance Meter is designed with unprecedented capabilites and features guaranteeing outstanding measurement performance. It offers minimum cur resolution for meeting all low-level cur measurement needs and its voltage sourcing feature supports resistance measurements. Its unique color LCD provides multiple options for viewoing data. State-of-the art front panel-capabilities allow you to capture transient behavior and perform quick statistical analyses without the need of a PC. Features and Specifications of the Keysight B2985A (Agilent) Electrometer / High Resistance Meter include:Features:

Graphical capabilities:

• Time domain view to capture transients
• Graphical viewing modes: Meter, Graph, Histogram, and Roll View
• Histogram view to perform quick data analysis
• Other X-Y plots (I-V, I-t, R-t, I-R, etc.)

Independent cur and voltage measurement

Temperature and humidity measurements

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

Applications:

• Material science (Biomaterials, ceramics, elastomers, films, dielectric materials, electrochemical, ferroelectric materials, graphene, metals, organic materials, nano-materials, polymers, semiconductors, etc.)
• Devices & elecronic 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.)

Time domain view to capture transients

Graphical viewing modes: Meter, Graph, Histogram, and Roll View

• Histogram view to perform quick data analysis

Other X-Y plots (I-V, I-t, R-t, I-R, etc.)

Histogram view to perform quick data analysis

Material science (Biomaterials, ceramics, elastomers, films, dielectric materials, electrochemical, ferroelectric materials, graphene, metals, organic materials, nano-materials, polymers, semiconductors, etc.)

Devices & elecronic 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.)

Specifications of the Keysight B2985A (Agilent) Electrometer / High Resistance Meter include:

Measurement resolution:  6½ digits

Cur measurement:  0.01 fA – 20 mA

• Minimum range:  2 pA

Resistance measurement:  up to 10 PΩ

Voltage measurement:  1 µV – 20 V

• Input resistance:  > 200 TΩ

Charge measurement:  1 fC – 2 µC

Voltage source:  up to ± 1,000 V

• Minimum resolution:  700 µV

Maximum reading rate:  20,000 rdg/s

< 20 µ V burden voltage in its lowest cur range

Voltage measurement: 

• Voltage range: 2 V
• Display resolution:  1 µV
• Accuracy ±(% + offset):  0.025 + 40 µV
• Voltage range: 20 V  
• Display resolution:  10 µV
• Accuracy ±(% + offset):  0.025 + 400 µV

Input bias cur:  < 20 fa 

Input impedance:  > 200 TΩ, parallel with < 20 pF (non-guarded) or < 2 pF (guarded) 

RMS noise:  1.4 µV for 2 V range, 10 s duration, shorted input 

Measurement control / navigation: 

• Ranging: Automatic or manual
• Aperture time (integration time):  10 µs to 100 PLC
• Offset cancelling:  Null, Zero correct
• Digital filter: Medium filter (2R + 1, R = 1 to 15), moving average (1 to 100, step 1)  
• Math:  Preset and user definable expressions
• Statistics:  Histogram View mode: mean, sigma, # of bins and # of samples
• Line frequency detection:  Auto detect: 50 Hz or 60 Hz 

Front panel operation:

• Front panel interface:  4.3″ TFT color display with keypads and rotary knob
• View mode: Meter view, Graph view, Histogram view and Roll view
• Hard keys:  Single Trigger and Run/Stop control, measurement navigation keys, Rotary Knob and Cursors, Ammeter Input and V Source Output control, Cancel/Local
• Soft keys:  Function, System and Input Assist keys
• Indicators: Channel (measurement) status, System status
• LEDs:  
• Power (color changes when charging)
• Input and Output (color changes when high voltage sourcing)

Input/Output specifications:  

• Meter input connector:  Three lug triaxial for ammeter on rear panel 
• Maximum input:
• Ammeter: 30 mA
• Voltmeter: 40 V
• Source output connector:  Two banana jacks on rear panel
• Maximum common mode voltage:  Meter common: 500 V peak: V Source 1,000 V peak
• Isolation (Meter common to chassis:  > 10 GΩ, < 500 pF 
• Analog output: 2 V for full range input, non-inverting in voltage and cur measurement modes, 1 kΩ output impedance
• Interlock:  2.5 mm pluggable terminal block, 4 pin
• External trigger:
• Trigger input:  BNC
• Logic:  Programmable edge triggered
• Min pulse width:  10 µs
• Trigger output:  BNC
• Logic:  Programmable edge triggered
• Min pulse width:  10 µs

Digital I/O:

• Connector type:  DSUB female 9 pins
• Input/output pins:  DIO 7 pins, +5V, GND
• Absolute  max input voltage:  5.25 V
• Absolute  min input voltage:  -0.25 V
• Max logic L input voltage:  -0.8 V, Pull-up to 5 V by 5 kΩ
• Min logic H input voltage:  2.0 V, Pull-up to 5 V by 5 kΩ
• Max source cur:  1 mA @ Vo = 0 V
• Max sink cur:  50 mA @ Vo = 5 V
• 5 V power supply pin:  Limited to 500 mA, resettable fuse protected

Minimum range:  2 pA

Input resistance:  > 200 TΩ

Minimum resolution:  700 µV

Voltage range: 2 V

• Display resolution:  1 µV
• Accuracy ±(% + offset):  0.025 + 40 µV

Voltage range: 20 V  

• Display resolution:  10 µV
• Accuracy ±(% + offset):  0.025 + 400 µV

Display resolution:  1 µV

Accuracy ±(% + offset):  0.025 + 40 µV

Display resolution:  10 µV

Accuracy ±(% + offset):  0.025 + 400 µV

Ranging: Automatic or manual

Aperture time (integration time):  10 µs to 100 PLC

Offset cancelling:  Null, Zero correct

Digital filter: Medium filter (2R + 1, R = 1 to 15), moving average (1 to 100, step 1)  

Math:  Preset and user definable expressions

Statistics:  Histogram View mode: mean, sigma, # of bins and # of samples

Line frequency detection:  Auto detect: 50 Hz or 60 Hz 

Front panel interface:  4.3″ TFT color display with keypads and rotary knob

View mode: Meter view, Graph view, Histogram view and Roll view

Hard keys:  Single Trigger and Run/Stop control, measurement navigation keys, Rotary Knob and Cursors, Ammeter Input and V Source Output control, Cancel/Local

Soft keys:  Function, System and Input Assist keys

Indicators: Channel (measurement) status, System status

LEDs:  

• Power (color changes when charging)
• Input and Output (color changes when high voltage sourcing)

Power (color changes when charging)

Input and Output (color changes when high voltage sourcing)

Meter input connector:  Three lug triaxial for ammeter on rear panel 

Maximum input:

• Ammeter: 30 mA
• Voltmeter: 40 V

Source output connector:  Two banana jacks on rear panel

Maximum common mode voltage:  Meter common: 500 V peak: V Source 1,000 V peak

Isolation (Meter common to chassis:  > 10 GΩ, < 500 pF 

Analog output: 2 V for full range input, non-inverting in voltage and cur measurement modes, 1 kΩ output impedance

Interlock:  2.5 mm pluggable terminal block, 4 pin

External trigger:

• Trigger input:  BNC
• Logic:  Programmable edge triggered
• Min pulse width:  10 µs
• Trigger output:  BNC
• Logic:  Programmable edge triggered
• Min pulse width:  10 µs

Ammeter: 30 mA

Voltmeter: 40 V

Trigger input:  BNC

• Logic:  Programmable edge triggered
• Min pulse width:  10 µs

Trigger output:  BNC

• Logic:  Programmable edge triggered
• Min pulse width:  10 µs

Logic:  Programmable edge triggered

Min pulse width:  10 µs

Logic:  Programmable edge triggered

Min pulse width:  10 µs

Connector type:  DSUB female 9 pins

Input/output pins:  DIO 7 pins, +5V, GND

Absolute  max input voltage:  5.25 V

Absolute  min input voltage:  -0.25 V

Max logic L input voltage:  -0.8 V, Pull-up to 5 V by 5 kΩ

Min logic H input voltage:  2.0 V, Pull-up to 5 V by 5 kΩ

Max source cur:  1 mA @ Vo = 0 V

Max sink cur:  50 mA @ Vo = 5 V

5 V power supply pin:  Limited to 500 mA, resettable fuse protected

    

• Keysight (Agilent) B2985A - Datasheet (1 Mo)