 Specially designed for electric-double layer capacitors (EDLCs) , battery, and solar cell research Source and measure up to 20V and 10A
 Versatile control software provides all necessary data analyzing tools with automated curve
fitting to evaluate capacitance, power, energy of EDLCs, and capacity, cycles life testing ofbatteries.
Constant current charge-discharge test
Cyclic voltammetry curve
Self discharge analysis etc…
 Can be used as a potentiostat or a galvanostat with 4 probes

Specifications
Measurement Range

Max. Voltage: 20 V
Max. Current: 10 A (pulse)
8 A (continuous)with 5½-digits measuring resolution

Measuring Technique

Digital Source/Measure Unit

InputsFront: 4 probes

A/D Converters

24 Bit (2 independent ADCs for V & I readings)
up to 30,000 SPS

User Interface and datacollection

Computer software is provided for control of
all functions and data logging. Measurement
data can be saved as a text file and directly
plotted on ®Microsoft Excel graph. (Windowsbased PC required)

Communication

Through a USB port

Power Requirement

100 – 240 VAC (50-60 Hz)

Dimensions, Weight

320 mm(W) x 450 mm(D) x 150 mm(H) ,10 kg

Built-in Software Features

Built-in Software Features

For EDLCs Analysis:

General capabilities:
 I-V tracing for solar cell
 Use as a potentiostat with 4 wires
 Use as a galvanostat
 4-probe resistance measurement
 Use as lead-acid, Li-ion, Li polymer battery charger up to 8A and 20 V
 All data and graphs can be directly saved as ®Microsoft Excel files
 All measurement parameters can be saved and reloaded when needed torepeat at the same experiment.

 Measurement of constant current charge-discharge test with given
voltage compliance.
 Plot cyclic voltammetry curve Curve fittings for ideal RC model and nonlinear real model R-CPE(Q , α).
 Calculation of energy vs. time plots
 Calculation of energy vs. power curve Self discharge analysis
 Cycle life testing
For Battery Analysis:
 Measurement of constant current charge-discharge curve with given
voltage compliance.
 Analysis of both charge and discharge data Self discharge analysis
 Cycle life testing Limit based analyses (voltage, current, temperature, ohmic value)

SPD Laboratory, Inc.

2-35-1 Johoku, Hamamatsu, 432-8011, JAPAN
Tel: +81-53-474-7901 Fax: +81-53-401-7080
Email: inq@spd-lab.com
Web: http://www.spdlab.com/English/VK-PA-25.html

Screenshot of constant current charge discharge control panel

Screenshot of self discharge testingScreenshot of solar cell I-V tracing tab

Screenshot of Galvanostat/Potentiostat tab

Screenshot of Cyclic Voltammetry tab

Screenshot of solar cell MPPT tab

Screenshot showing data saving options

Screenshot of “Analyzer Settings” tabVMK-8000 Detailed Electrical Specifications
Measuring Technique

Digital Source Meter with 4 probes connection to DUT.

Measuring Range

Voltage: -3 to +20 V

Specifications of A/D Converters

Resolution: 24 Bit
Utilize on-chip digital calibration to eliminate offset and gain errors.
ADC integration time can be selected from 16 different values from 400 ms to 33.3μs.

Built-in Voltage Reference Parameters

Output Voltage : 2.500 ± 0.001 V Output Voltage Drift : 3 ppm/°C (-40°C to +85°C)
Output Noise : 100 nV/Hz½

Current: ±8 A Continuous 10 A (pulse)

Voltage measuring ranges and reading (24-bit ADC) resolution and voltage setting (16-bit DAC) resolutions
Range± 250 mV± 500 mV

±1V±2V±4V±8V± 18 V± 20 VReading
Resolution

19 nV

37 nV

74 nV

149 nV298 nV596 nV

1.2 μV

2.4 μV

Setting
Resolution

9.5 μV

9.5 μV19.1 μV

38.1 μV

76.3 μV

153 μV305 μV

6010 μV

Current measuring ranges and reading (24-bit ADC) resolution and current setting (16-bit DAC) resolutions
Current Measuring Range

Current Reading Resolution(24-bit ADC)

± 15 μA

2 pA

1 nA

± 30 μA

5 pA

1 nA

± 60 μA

9 pA

1 nA± 125 μA

18 pA

1 nA

± 250 μA

37 pA

1 nA

± 500 μA

74 pA

19 nA

± 1 mA

148 pA

38 nA± 2 mA

295 pA

76 nA± 7 mA

887 pA

0.9 μA± 14 mA

1.8 nA

0.9 μA± 25 mA

3.5 nA

0.9 μA± 50 mA

7.1 nA

2 μA± 100 mA

14 nA

4 μA

± 250 mA

37 nA

10 μA

± 500 mA

74 nA

19 μA

±1A

148 nA38 μA±2A

282 nA

144 μA±4A564 nA

289 μA±8A

1 μA

578 μA± 18 A

2 μA

1.1 mA

SPD Laboratory, Inc.

Current Setting Resolution(16-bit DAC)

2-35-1 Johoku, Hamamatsu, 432-8011, JAPAN
Tel: +81-53-474-7901 Fax: +81-53-401-7080 Email: inq@spd-lab.com
Web: http://www.spdlab.com/English/VMK-8000.html