Keysight Technologies B2900A Series Manuale utente

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

Source

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

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.

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.

For other unlisted countries:

www.keysight.com/nd/contactus

www.keysight.con/nd/precisionSMU

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