Keysight Technologies B2900A Series Manuale utente

Keysight Technologies

Making Time Domain Measurement with

Continuous Source Using SMU

B2900A Precision Source/Measure Unit

Demo Guide

02 | Keysight | Making Time Domain Measurement with Continuous Source Using SMU – Demo Guide

Introduction

The Keysight B2900A Series Precision Source/Measure Unit (SMU) is a compact and

cost-effective bench-top SMU with the capability to output and measure both voltage

and current. The B2900A Series SMU enables you to make a wide range of current

versus voltage (IV) measurements more accurately and quickly than ever before. In

addition, the B2900A Series SMU comes with an intuitive graphical user interface (GUI)

and free PC-based application software that make it easy for you to begin making

productive measurements immediately.

This demonstration guide shows how easily you can make a time domain measurement

with sourcing continuous current or voltage using the B2900A Series SMU.

Concept

Figure 1 illustrates the connection diagram used in the demo to make a time domain

measurement of voltage with sourcing current to an LED using the B2900A Series SMU.

Figure 1. Connection diagram

Required Instrument and Accessories

All of the accessories required to perform the demos described in this demonstration guide

are provided in a demo kit that is included with Keysight B2902A/12A demo units. The kit

includes items such as a Kelvin Probe Set, an LED.

Keysight B2902A/12A

Precision Source/Measure Unit

11059A Kelvin Probe Set

LED

A-

High Force

Low Force

B2901/02/11/12A

DUT

DUT : LED

Source Current : 10 mA

Voltage Limit : 2 V

Common

03 | Keysight | Making Time Domain Measurement with Continuous Source Using SMU – Demo Guide

Figure 2. Timing chart for the time domain measurement with continuous source

Figure 2 shows the timing chart for the time domain measurement with continuous source with

the front panel operation. In this case, the specied source value is sourced immediately after

turning on the channel by pressing . Then, when you press , the instrument will

make a time domain measurement. Sweep parameters will be used in the example in order to

source the continuous current. Besides, if it is necessary, you can specify any measurement

trigger delay time which is the wait time after each internal trigger and before making a

measurement. The measurement time consists of Measurement Speed and some overhead

time. Measurement Speed is the parameter specied by the user. Overhead time includes the

time to change the measurement range, etc.

Setup

1. Connect the yellow banana plug to the Ch 1 Low Force Terminal.

2. Connect the red banana plug to the 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.

Cathode

Anode

Red (11059A)

Yellow (11059A) Black (11059A)

Red (11059A)

Trigger

Output ON

Source

Value

Output

Off State

: Measurement

V or I

Time

TSD

TMD

Start/Stop

Value

TMD

TMTM

TMD

TPTPTPTP

: Trigger Period

: Measurement Time

TSD

TMD

: Source Trigger Delay Time

: Measurement Trigger

Delay Time

Internal Trigger

04 | Keysight | Making Time Domain Measurement with Continuous Source Using SMU – Demo Guide

LAB: Make Time Domain Measurement with Continuous Source Using SMU

Objective

This demo illustrates the function

to make a time domain

measurement of voltage with

sourcing current to an LED using a

Source/Measure Unit.

Procedure

1. Change View mode to Channel 1

Single View

2. Congure the condition for Time

Domain Measurement

3. Change View mode to Graph View

4. Perform the measurement

5. View the measurement result graph

6. View the list of measurement results

7. (Optional) Congure the

measurement speed

8. (Optional) Congure to use AUTO

measurement range operation

Demonstration

1. Change View mode to Channel 1 Single View

1) Press repeatedly until the Channel 1

Single View is displayed.

2. Congure the condition for Time Domain Measurement

Press to edit the Source function, and then select to set the Source

function to Current source.

2) Press to edit the Source value, and then enter 10 nA to set the Source value to

10 nA.

3) Press to edit the Limit value, and then enter 2 V to set the Limit value to 2 V.

4) Press to congure the Measurement parameter, and then select to set the

Measurement parameter to Voltage.

05 | Keysight | Making Time Domain Measurement with Continuous Source Using SMU – Demo Guide

Press to change the keys shown in Assist keys, and then press to show

Sweep Sub-Panel.

6) 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.

7) Rotate to select Channel 1 Sweep Parameters and set them up as below.

Start and Stop values should be the same, which dene the continuous source value.

(Start: 10 mA, Stop: 10 mA, Points: 1, Step: 0 A)

8) Press to show Trigger Sub-Panel.

8) Press to edit the Trigger type, and then select to set the Trigger type

to TIMER.

06 | Keysight | Making Time Domain Measurement with Continuous Source Using SMU – Demo Guide

10) Rotate to select Channel 1 Trigger Parameters and set them up as below.

Measurement Trigger Count denes the number of sampling and Measurement Trigger

Period denes the interval of sampling.

(Source Trigger Count: 1, Measurement Trigger Count: 101, Source Trigger Delay: 20 ms,

Measurement Trigger Delay Time: 500 us, Measurement Trigger Period: 1 ms)

Now you’ve congured a 1 ms measurement trigger period for a time domain measure-

ment. The measurement will be performed every 1 ms periodically. However, please

note that a FIXED voltage measurement range operation will be used to control the

trigger period, in other words the measurement interval, strictly. The measurement

range is selected by Limit value. In this example, a 2 V measurement range will be

used. If using AUTO measurement range operation is prior to controlling the trigger

period strictly, you may specify MANUAL trigger type with AUTO source and measure-

ment trigger source by the steps shown later.

3. Change View mode to Graph View

Press repeatedly until Graph View

is displayed.

Rotate and press to edit the Y-axis data type, and then select to set the Y-axis

data type to Voltage.

Rotate and press to edit the X-axis data type.

07 | Keysight | Making Time Domain Measurement with Continuous Source Using SMU – Demo Guide

4) Press , and then select to set the X-axis data type to Time.

4. Perform the measurement

1) Press to source the current specied by the Source value, and then press

to perform a measurement.

(The status information will show during the measurement.)

5. View the measurement result graph

1) Press to adjust the scale of the graph after nishing the measurement.

2) Rotate and press to edit the Y-axis scaling, and then enter 2 V to adjust the

graph scale.

Now you can see the measurement result on the GUI of the B2900A series SMU as

below.

08 | Keysight | Making Time Domain Measurement with Continuous Source Using SMU – Demo Guide

6. View the list of measurement results

The measurement results including the measurement time stamp can be referred by the

following steps.

1) If you aren’t on the top of the Function menu, press repeatedly to return to

the top level.

2) If you’d like to see the list of the measurement result, press , then press

to open Measure Result dialogue.

3) Rotate and press to select the Data Type eld.

4) Press to change the keys shown in Assist keys, and then press to

select Time as the Data type.

5) Rotate and press to select the Data eld. Then rotate to scroll the data

list.

On the top level of the Function menu

In the middle level of the Function menu

Any tree structure can’t be seen

Some tree structure can be seen

(1) Press Result

(2) Press Measure

09 | Keysight | Making Time Domain Measurement with Continuous Source Using SMU – Demo Guide

7. (Optional) Congure the measurement speed

In the default setting, the instrument selects the appropriate measurement speed and

range automatically to get the ne accuracy. However, you can also specify these pa-

rameters on the GUI of the B2900A series SMU to meet a variety of the requirement to

the measurement conditions.

For example, let’s try to change the measurement speed to SHORT to make a measure-

ment more quickly. If you select SHORT, the aperture time is set to 0.01 PLC. Here, PLC

stands for power line cycle and the specied number of power line cycles is used per a

measurement.

1) Press repeatedly until the Channel 1

Single View is displayed.

2) Press to edit the Measurement speed, and then select to set the

Measurement speed to SHORT. (If you can’t see in Assist keys, press

to change the keys shown in Assist keys.)

8. (Optional) Congure to use AUTO measurement range operation

If you’d like to use AUTO measurement range operation during the time domain measure-

ment, take the following steps.

1) Press repeatedly until the Channel 1

Single View is displayed.

2) Rotate and press to edit the Trigger type, and then select to set the

Trigger type to MANUAL.

10 | Keysight | Making Time Domain Measurement with Continuous Source Using SMU – Demo Guide

B2900 Precision Instrument Family

The B2900 family contains products that perform both precision sourcing and precision

measurement. www.keysight.com/nd/b2900a

3) Rotate to select Channel 1 Trigger Parameters and set them up as below.

(Source Trigger Source: AUTO, Measurement Trigger Source: AUTO)

4) Press to show Range Sub-Panel. (If you can’t see in Assist keys,

press to change the keys shown in Assist keys.)

5) Rotate and press to edit the Voltage minimum measurement range, and

then select to set it to 2Vfor example.

Conclusion

The Keysight B2900A Series Precision Source/Measure Unit (SMU) is a compact and cost-

effective bench-top SMU with the capability to output and measure both voltage and current.

Conguring the B2900A series SMU properly enables you not only to make a simple current

versus voltage (IV) measurement, but also to make a time domain measurement with sourcing

continuous current or voltage as if it were an oscilloscope.

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