Datasheet

Programmable DC Electronic Loads
8500B Series
4
www.bkprecision.com
Flexible operation
List mode lets you generate more complex
sequences of input changes with several different
levels. Save up to 7 groups of list files to internal
memory for recall and set parameters including
step counts (range 2 to 84), width time of a
single step (minimum 20 µs), step value, and
slope.
List mode Automatic test mode
Execute multiple test sequences in automatic
test mode. Up to 100 different sequences can be
linked to run steps of various operating modes
and load conditions.
Transient operation
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. These
combinations are all controllable in the
continuous, pulse, and toggled modes.
Low voltage operation
The 8500B Series can operate at low voltages for applications in fuel cell and solar cell testing.
pass
pass
pass
fail
CC 1 A
CW 0.5 W
CV 3 V
CR 2 Ω
1 s 0.5 s 1.5 s 2.5 s
Slew Rate
A level
B level
t
A
t
A
Steps
Trigger
0 1 2 3 4 5 6 7 8
Battery test function
Built-in battery test function to calculate the
Ah characteristic and capacity of a battery using
a fixed current load discharge. Specify stop
conditions for cut-off voltage, capacity level, and
time up to 27 hours.
Typical battery discharge curve
Volts
Hours
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0 0.5 1.0 1.5 2.0 2.5
Adjustable slew rate
In CC mode, users can control the rate or slope
of the change in current in a transient response
test. Set the slew rate as slow as 0.0001 A/µs or
as fast as 1 A/µs depending on the model and
selected current range.
t
A
Slew Rate
Typical minimum operating voltage at full scale current
8542B 8500B 8502B 8510B 8514B
2.5 V 1.4 V 3 V 2 V 2.5 V
V
I
240
30
15
0
1 2 3 4
Current (A)
Voltage (V)
8542B8500B
8510B
8502B
8514B
120