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Data Sheet

Programmable DC Electronic Loads

8500B Series

Technical data subject to change

www.bkprecision.com

The 8500B Series programmable DC electronic

loads improve upon all aspects of its predecessor

while maintaining dependability at a value price.

A set of comprehensive functions make these

loads a versatile tool for testing and evaluating

DC power supplies, DC-DC converters, batteries,

battery chargers, and photovoltaic arrays.

List mode, transient mode, automatic test mode,

and battery test mode offer a variety of test tools

for lab or production line applications.

Continuously switching and pulsing load

conditions put a dynamically changing load on

DC sources. Load behavior can be triggered

internally, externally, or remotely from the

included application software.

Contained in a compact benchtop form factor,

these loads operate in constant current (CC),

constant voltage (CV), constant resistance (CR),

or constant power (CW) mode. Internal memory

allows for 100 sets of user conﬁgurable

parameters such as voltage, current, slew rate and

width for quick system recall.

Special applications

• Performance veriﬁcation of photovoltaic

solar panels

• CR-LED mode to simulate loading behavior

and test LED drivers

• Fuel and solar cell tests

• Battery test and power supply evaluations

Features and beneﬁts (cont.)

n Adjustable slew rate in CC mode

n Flexible triggering options via front panel,

external input, timer, or bus

n Built-in battery test function, specify cut-off

voltage, capacity level, and time

n Test modes to validate the OCP/OPP protection

functions of a power supply

n OVP/OCP/OPP/OTP including local and remote

reverse voltage (LRV/RRV) protection

n Remote sense

n Short-circuit test

n Analog current control and monitoring

n Two thermostatically controlled fans

(linear-speed control to minimize noise)

n Integrated meter measures voltage, current, &

power

n Rack-mountable

Model 8542B 8500B 8502B 8510B 8514B

Power 150 W 300 W 300 W 600 W 1500 W

Rated Voltage 150 V 150 V 500 V 120 V 120 V

Rated Current 30 A 30 A 15 A 120 A 240 A

I/O Interface TTL (DB9) interface with USB adapter USB, RS232

Form Factor 2U half-rack 2U

Features and beneﬁts

n Maximum input power 1500 W

n CC/CV/CR/CW operating modes

n 16-bit voltage and current measurement system

providing up to 0.1 mV / 0.1 mA resolution

n Transient mode up to 10 kHz in CC mode

n List mode function for custom step sequences

n Supports both SCPI and backwards compatible

8500 series protocol

n Store and recall up to 100 instrument settings

USB RS232

8514B only

Summary of content (7 pages)

PAGE 1
Data Sheet Programmable DC Electronic Loads 8500B Series USB RS232 8514B only The 8500B Series programmable DC electronic loads improve upon all aspects of its predecessor while maintaining dependability at a value price. A set of comprehensive functions make these loads a versatile tool for testing and evaluating DC power supplies, DC-DC converters, batteries, battery chargers, and photovoltaic arrays.
PAGE 2
Programmable DC Electronic Loads 8500B Series u Models 8542B, 8500B, 8502B and 8510B Front panel Bright dual-line display The 8500B Series display shows both measured input values and set parameters simultaneously.
PAGE 3
Programmable DC Electronic Loads 8500B Series u Model 8514B Front panel Rack-mount ears included Bright dual-line display The 8500B Series display shows both measured input values and set parameters simultaneously.
PAGE 4
Programmable DC Electronic Loads 8500B Series Flexible operation Transient operation List mode Automatic test mode A A CV 3 V A level Trigger fail CR 2 Ω pass CC 1 A pass 0 1 2 3 4 5 6 7 B level 8 CW 0.5 W pass Steps t Transient operation to periodically switch between two load levels. A power supply’s regulation and transient characteristic can be evaluated by monitoring the supply’s output voltage under varying combinations of load levels, frequency, duty cycle, and slew rate.
PAGE 5
Programmable DC Electronic Loads 8500B Series Remote control and programming Battery test software External analog programming and monitoring interface Application software In addition to front panel and remote interface control, current values can also be programmed with an analog control signal. The electronic loads can be externally controlled from zero to full scale with a 0 to 10 V input signal. A BNC output is available on the rear for monitoring the current with a 0 to 10 V output signal.
PAGE 6
Programmable DC Electronic Loads 8500B Series Specifications Note: All specifications apply to the unit after a temperature stabilization time of 30 minutes over an ambient temperature range of 23 °C ± 5 °C.
PAGE 7
Programmable DC Electronic Loads 8500B Series Specifications (continued) Model 8542B 8500B 8502B 8510B 8514B Readback voltage Range Resolution Low 0 to 18 V 0 to 50 V 0 to 18 V High 0 to 150 V 0 to 500 V 0 to 120 V Low 0.1 mV 1 mV 0.1 mV High 1 mV 10 mV 1 mV Accuracy ±(0.05% + 0.05% FS) Readback current Range Resolution Low 0 to 3 A High 0 to 30 A 0 to 3 A 0 to 12 A 0 to 15 A 0 to 120 A 0 to 24 A 0 to 240 A Low 0.1 mA 1 mA High 1 mA 10 mA Accuracy ±(0.05% + 0.