The Agilent B2985A Electrometer / High Resistance Meter is designed with unprecedented capabilites and features guaranteeing outstanding measurement performance. It offers minimum current resolution for meeting all low-level current 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:

Features:

●Graphical capabilities:

oTime domain view to capture transients

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

■Histogram view to perform quick data analysis

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

●Independent current 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:

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

oDevices & elecronic components (capacitors, resistors, diodes, sensors, transistors including TFT and CNT, optoelectronics, solar cells, etc.)

oElectronic/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

●Current measurement:  0.01 fA – 20 mA

oMinimum range:  2 pA

●Resistance measurement:  up to 10 PΩ

●Voltage measurement:  1 µV – 20 V

oInput resistance:  > 200 TΩ

●Charge measurement:  1 fC – 2 µC

●Voltage source:  up to ± 1,000 V

oMinimum resolution:  700 µV

●Maximum reading rate:  20,000 rdg/s

●< 20 µ V burden voltage in its lowest current range

●Voltage measurement: 

oVoltage range: 2 V

■Display resolution:  1 µV

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

oVoltage range: 20 V  

■Display resolution:  10 µV

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

●Input bias current:  < 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: 

oRanging: Automatic or manual

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

oOffset cancelling:  Null, Zero correct

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

oMath:  Preset and user definable expressions

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

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

●Front panel operation:

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

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

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

oSoft keys:  Function, System and Input Assist keys

oIndicators: Channel (measurement) status, System status

oLEDs:  

■Power (color changes when charging)

■Input and Output (color changes when high voltage sourcing)

●Input/Output specifications:  

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

oMaximum input:

■Ammeter: 30 mA

■Voltmeter: 40 V

oSource output connector:  Two banana jacks on rear panel

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

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

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

oInterlock:  2.5 mm pluggable terminal block, 4 pin

oExternal 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:

oConnector type:  DSUB female 9 pins

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

oAbsolute  max input voltage:  5.25 V

oAbsolute  min input voltage:  -0.25 V

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

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

oMax source current:  1 mA @ Vo = 0 V

oMax sink current:  50 mA @ Vo = 5 V

o5 V power supply pin:  Limited to 500 mA, resettable fuse protected