Keysight Technologies B2901A User manual

DEMO GUIDE
Making Current-Voltage
Measurement Using SMU
B2901A/02A/11A/12A Precision Source/Measure Unit

Required Instrument and Accessories
Keysight 11059A Kelvin Probe Set and LED Lamp are equipped as a demo kit with a demo unit
of the Keysight B2900A Series of SMU.
Keysight 11059A Kelvin Probe Set
LED Lamp
Keysight B2901A/02A/11A/12A
Precision Source/Measure Unit
The Keysight B2901A/02A/11A/12A
Precision Source/Measure Units are
compact and cost-effective bench-
top Source/Measure Units (SMUs)
with the capability to output and
measure both voltage and current.
The B2901A/02A/11A/12A enables
you to make a wide range of current
versus voltage (IV) measurements more
accurately and quickly than ever before. In
addition, the B2901A/02A/11A/12A comes
with an intuitive graphical user interface
(GUI) and PC-based application software
that make it easy for you to begin making
productive measurements immediately.
This demonstration guide shows how
easily basic voltage current measurement
can be made using the Keysight
B2901A/02A/11A/12A.
The demonstration includes not only a
single point measurement where current is
measured with sourcing constant voltage,
but also a sweep measurement where
currents are measured each voltage with
stepping the source voltage.
Introduction
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Measurement concept
– Sourcing voltage to turn the LED on.
– Limit value feature prevent the instrument from sourcing too much
even if Source value is increased.
– Stepping voltages from start voltage to stop voltage with making
current measurement at each voltage step.
– Voltage steps are sourced from an internal voltage source.
– Current measurements are made by an internal current meter.
– The complicated measurement as above can be configured and
made easily with Intuitive Graphical User Interface (GUI).
– Current-voltage curve can be seen easily by changing View mode.
Setup
1. Connect the yellow banana plug to Ch 1 Low Force Terminal.
2. Connect the red banana plug to Ch1 High Force Terminal.
3. Clip the LED cathode terminal with the black gold-plated tweezers.
4. Clip the LED anode terminal with the red gold-plated tweezers.
0.00
0.05
0.10
0.15
0.20
0.0 0.5 1.0 1.5 2.0 2.5 3.0
Current [A]
Voltage [V]
LED Current-Voltage Characteristics
High Force
Low Force
B2900A Series
VSource
IMeas
LED
-
Ch 1
A
4
1
2
Cathode
Anode
3
Red (11059A)
Yellow (11059A) Black (11059A)
Red (11059A)
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Objective
This demo shows how easily a
current-voltage measurement
can be made with the B2900A
Series through the Light Emitting
Diode (LED) characteristics
measurement.
Procedure overview
1. Change View mode to
Single View
2. Source voltage to turn on
the LED
3. Make measurement of the
LED current
4. Turn off the channel output
LAB 1: Turn on the LED and Measure LED Current
Demonstration
1. Change View mode to Single View
a. Press repeatedly until Single View
for Channel 1 is shown in the display.
2. Source voltage to turn on the LED
a. Press to edit Channel 1 Source value, and then enter 2 V to set
Source value to 2 V.
b. Press and set Channel 1 Limit value to 100 mA.
c. Press Ch1 to turn on Channel 1 Output relay.
(1) Press Limit (2) Enter 100 mA
(1) Press Source (2) Enter 2 V
You will see LED is turned on because
voltage is sourced by the channel
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d. Press and rotate until Source value achieves 3 V. You will
see the measurement parameters turn orange, which means they reach
Limit value.
e. Rotate until Source value achieves 2 V and then press to
set Source value to 2 V.
3. Make measurement of the LED current
a. Press to perform a single point measurement.
b. Press to repeat single point measurements periodically.
LAB 1: Turn on the LED and Measure LED Current (continued)
(1) Press Source and rotate
until Source value achieves 3 V
Measurement parameters
will turn orange
(1) Rotate
achieves 2 V
until Source value (2) Press
to 2 V
to set Source value
Measurement parameters are updated
whenever Trigger Button is pressed
Measurement parameters
are updated periodically
“Auto” indicator is turned on
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LAB 1: Turn on the LED and Measure LED Current (continued)
c. Press to stop making measurements periodically.
4. Turn off the channel output
a. Press to edit Channel 1 Source value, and then enter 0 V to set
Source value to 0 V.
b. Press Ch1 to turn off Channel 1 Output relay.
“Auto” indicator is
turned off
(1) Press Source (2) Enter 0 V
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Objective
This demo shows how easily
current-voltage characteristics
can be obtained with the B2900A
Series through the Light Emitting
Diode (LED) characteristics
measurement.
Procedure overview
1. Change View mode to Single
View
2. Configure the condition to
source and measure
3. Change View mode to Graph
View
4. Perform the measurement
5. View the measurement result
graph
6. Change the graph scale
7. View the list of the measure-
ment data
Lab 2: Make Current – Voltage (I – V) Sweep Measurement to get
LED I – V Characteristics
Demonstration
1. Change View mode to Single View
a. Press repeatedly until Single View for
Channel 1 is shown in the display.
2. Configure the condition to source and measure
a. Press , then press to set Channel 1 V/I Source Function
to V Source. (If can’t be found on the Assist keys, press to
change the keys.)
b. Press and set Channel 1 Limit value to 100 mA.
c. Press , then press to set Channel 1 Measurement
Parameter to Current.
(2) Press VOLTS (V)
(1) Press Mode
(1) Press Limit (2) Enter 100 mA
(1) Press Measure (2) Press AMPS (I)
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Lab 2: Make Current – Voltage (I – V) Sweep Measurement to get
LED I – V Characteristics
d. Press , and then press to show Sweep Sub-Panel.
e. Press , then press to turn on Single Linear Sweep Mode.
After turning on Single Linear Sweep Mode, you can see Source
Shape which shows the single linear sweep mode.
f. Rotate to select Channel 1 Sweep Parameters and set them up as
below. (Start: 0 V, Stop: 2 V, Points: 101, Step: 20 mV)
3. Change View mode to Graph View
a. Press repeatedly until Graph View is
shown in the display.
(1) Press More… (2) Press Show Sweep
(1) Press
and then press LINEAR SINGLE Source Shape
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4. Performing the measurement
a. Press Ch1 to turn on Channel 1 Output relay, and then press
to perform a sweep measurement. During the measurement, the status
information will show
5. View the measurement result graph
a. Press to adjust the scale of the graph after finishing the
measurement.
6. Change the graph scale
a. To change the graph scaling of Y-axis from LINEAR to LOG, rotate and
press to select Y-axis scaling.
b. To change the graph scale value of Y-axis, rotate and press to
modify Y-axis scale value.
Lab 2: Make Current – Voltage (I – V) Sweep Measurement to get
LED I – V Characteristics
(2) Press LOG(1) Rotate
then press
to select Y-axis scaling
(2) Enter the scale such as 1 nA(1) Rotate
value then press
to select Y- axis scale
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7. View the list of the measurement data
a. If you’d like to see the list of the measurement result, press,
then press to open Measure Result dialogue.
b. Rotate and press to select List Area. Then rotate to scroll
the data list.
Lab 2: Make Current – Voltage (I – V) Sweep Measurement to get
LED I – V Characteristics
(1) Press Result
(2) Press Measure
(1) Rotate and press
List Area
to select (2) Rotate
to scroll the list
or press Assist key
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This information is subject to change without notice. © Keysight Technologies, 2018 - 2020, Published in USA, January 6, 2020, 5991-4248EN
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Keysight B2900A Series Precision Instruments
The B2900A series lines up products for both
precision source and precision measurement.
www.keysight.com/find/b2900a