Keysight Technologies B2900A Series User manual

Keysight Technologies
Making Current-Voltage Measurement Using B2901A/02A/11A/12A - Demo Guide
B2900A Series Precision Source/Measure Unit
Measurement concept
– Source voltage to turn the LED on.
– Limit value feature prevent the instrument from
sourcing too much even if Source value is increased.
– Step 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
congured 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 Ch 1 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.
b. Press and set Channel 1 Limit value to 100 mA.
c. Press Ch1 to turn on Channel 1 Output relay.
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.
1. Turn on the LED and measure LED current
1-1. Change View mode to Single View
a. Press repeatedly until Single View
for Channel 1 is shown in the display.
1-2. 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.
Procedure overview
1. Turn on the Light Emitting Diode (LED) and measure LED
current
2. Make current-voltage (I-V) sweep measurement to get LED
I-V characteristics
Objective
This demo shows how easily current-voltage character-
istics can be obtained with the B2900A Series through
the LED characteristics measurement.
Required Instrument and Accessory
You will see LED is turned on
because voltage is sourced by
the channel
Keysight B2901A/02A/11A/12A
Precision Source/Measure Unit
LED lampKeysight 11059A
Kelvin Probe Set
Current [A]
Voltage [V]
LED Current-Voltage Characteristics
V Source
I Meas
-
B2900 Series
0.20
0.15
0.10
0.05
0.00
0.50.0 1.0 1.5 2.0 2.5 3.0
High force
Ch 1
Low force
LED
A
2
1
4
3
Red
(11059A)
Yellow
(11059A)
Black
(11059A)
Red
(11059A)
Cathode
Anode

1-3. Make measurement of the LED current
a. Press to perform a single point measurement.
b. Press to repeat single point measurements periodi-
cally.
c. Press to stop making measurements periodically.
1-4. 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.
2. Make current – voltage sweep measurement
2-1. Change View mode to Single View
a. Press repeatedly until
Single View for Channel 1 is
shown in the display.
2-2. Congure 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 Measure-
ment Parameter to Current.
2-3. Change View mode to Graph View
a. Press repeatedly until
Graph View is shown in the
display.
2-4. Perform 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 will be shown.
2-5. View the measurement result graph
a. Press to adjust the scale of the graph after nishing
the measurement.
This information is subject to change without notice.
© Keysight Technologies, 2014 - 2015
Published in USA, February 27, 2015
5991-3951EN
www.keysight.com
Keysight | Making Current–Voltage Measurement Using B2901A/02A/11A/12A - Demo Guide
Measurement parameters
are updated whenever
Trigger Button is pressed
Measurement parameters
are updated periodically
Source Shape
Sweep Sub-Panel
“Auto” indicator is turned on
“Auto” indicator is turned off
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)
2-6. 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.
2-7. View the list of the measurement data
a. 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.
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