Keysight B2900A Demo Manual

B2900A Precision Source/Measure Unit 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 use the Keysight B2900A Series SMU as a voltmeter. Required Instrument and Accessories All 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 banana cable, a 1.1 kΩ resistor, etc. Keysight B2902A/12A Precision Source/Measure Unit 11059A Kelvin Probe Set 1.1 kΩ Resistor U8201A Combo Test Lead Kit

Figure 1. Connection diagram and basic condition Concept Figure 1 illustrates the connection diagram used in the demo to use the Keysight B2900A Series SMU as a voltmeter. Since the low terminal of the channels in the B2900A Series SMU is grounded internally in the initial state, you need to configure it floating. In this demo, a 1.1 kΩ resistor combined with a current source is used as a DUT and mea- sure voltage across the resistor. The channel 2 of the B2902A/12A is used as a current source. However, you can also use your own current source for it Setup 1. Connect the yellow banana plug of the 11059A to the Ch1 Low Force Terminal. 2. Connect the red banana plug of the 11059A to the Ch1 High Force Terminal. 3. Connect the black banana cable of the U8201A to the Ch2 Low Force Terminal. 4. Connect the red banana cable of the U8201A to the Ch2 High Force Terminal. 5. Clip the end of the 1.1 kΩ resistor with the black alligator clip of the U8201A. 6. Clip the same end with the black gold-plated tweezers of the 11059A. 7. Clip the other end of the 1.1 kΩ resistor with the red alligator clip of the U8201A 8. Clip the same end of 1.1 kΩ resistor which the red alligator clip is clipped with the red gold-plated tweezers of the 11059A. A - - V Common High Force Low Force DUT High Low B2901/02/11/12A 1.1 kΩ Current Source DUT High Low A - R Channel 2 as Current Source Black (11059A) Red (11059A) U8201A Channel 1 DUT 1.1 kΩ Black Brown Brown Brown Brown Red (11059A) Yellow (11059A) A - - V Common High Force Low Force B2901/02/11/12A 1.1 kΩ Current Source DUT High Low A - R

LAB1: Use Source/Measure Unit as an Voltmeter Objective This demo illustrates the voltage measurement function as a voltmeter by sourcing almost 0 A current and measuring the voltage across the resis- tor biased by a current source using a Source/Measure Unit. Procedure 1. Configure the low terminal state to FLOATING 2. Measure voltage using the SMU (Channel 1) as a voltmeter 3. Enable the DUT 4. Confirm measured voltage 5. (Optional) Configuring the measurement speed 6. (Optional) Configuring the measurement range operation Demonstration In the default setting, the low terminal of the channels in the Keysight B2900A Series SMU is grounded internally. However, the low terminal can be disconnected from the ground and kept floating. Configur- ing the low terminal state to FLOATING, which enables you to connect the low terminal to any potential up to ±250 V, and measuring voltage with sourcing 0 A from the channel, which makes it possible to use the channel as a voltmeter. 1. Configure the low terminal state to FLOATING 1) If you aren’t on the top of the Function menu, press repeatedly to return to the top level. 2) Press , , and then press to open the Output Connection dialogue. 3) Press and select to specify the channel which the Low terminal state is configured for. 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 Config (2) Press Source (3) Press Connection

4) Press and select , and then press to configure the Low terminal state to FLOATING. If the low terminal state of the channel is set to FLOATING, you can see the status indicator on the GUI as below, although no indicator can be seen on being set to GROUNDED. 2. Measure voltage using the SMU (Channel 1) as a voltmeter 2-1. Change View mode to Ch1 Single View 1) Press repeatedly until the Channel 1 Single View is displayed 2-2. Configure the condition to source and measure 1) Press to edit the Source function, and then select to set the Source function to Current source. GROUNDED FLOATING

2) Rotate and press to edit the Current source range operation. Then Select to set the Current source range operation to FIXED. 3) Rotate and press to edit the Current source range, and then select to set it to 10 nA. (If you couldn’t find , select instead.) 4) Press to edit the Source value, and then enter 0.001 nA (1 pA) to set the Source value to 1 pA. 5) Press to edit the Limit value, and then enter 2 V to set the Limit value to 2 V for example. 6) Press to configure the Measurement parameter, and then select to set the Measurement parameter to Voltage.

2-3. Perform the measurement 1) Press for the channel 1 to switch on its output terminal. 2) Press to perform a measurement repeatedly. Now you can see the measurement result on the GUI of the B2902/12A as below. 3. Enable the DUT You can also use your own current source instead of the channel 2 of the B2902A/12A 3-1. Change View mode to Ch2 Single View. 1) Press repeatedly until the Channel 2 Single View is displayed. 3-2. Configure the condition of the current source (Channel 2) 1) 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 1 mA to set the Source value to 1 mA for example. 3) Press to edit the Limit value, and then enter 2 V to set the Limit value to 2 V for example.

4) Press for the channel 2 to switch on its output terminal and enable the DUT. 4. Confirm measured voltage 4-1. Change View mode to Ch1 Single View. 1) Press repeatedly until Channel 1 Single View is displayed. You can see about 1.1 V as measured value, since 1 mA is sourced to a 1.1 kΩ resistor. If you press for the channel 2 to switch it off, you can see only the offset voltage because the DUT is disabled. Theoretically speaking, the measured voltage should be 1.1 V since 1mA is sourced to a 1.1 kΩ resistor. However, it may be varied because the resistor has some error on its value actually. Current Source enabled Current Source disabled

5. (Optional) Configuring the measurement speed In the default setting, the instrument selects the appropriate measurement speed and range automatically to get the fine 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 NORMAL to make a mea- surement more carefully. If you select NORMAL, the aperture time is set to 1 PLC. Here, PLC stands for power line cycle and the specified number of power line cycles is used per a measurement. 1) Press to edit the Measurement speed, and then select to set the Measurement speed to NORMAL. (If you can’t see in Assist keys, press to change the keys shown in Assist keys.) 6. (Optional) Configuring the measurement range operation The parameters which configure the measurement range operation can be displayed in the Range Sub-panel in the Channel 1 Single View. In the default setting, the B2900A Series SMU performs the voltage measurement using a 200 mV voltage minimum mea- surement range with AUTO range operation. With AUTO range operation, the B2900A Series SMU selects the proper range for the measurement with the specified minimum measurement range so that you don’t need to take care about it. To know how to change the measurement range setting, try to configure to use the 2 V voltage minimum mea- surement range with AUTO range operation. 1) Rotate and press to edit the Voltage minimum measurement range, and then select to set it to 2 V. If you’d like to fix the measurement range, you can select FIXED range operation as below. 2) Rotate and press to edit the Voltage measurement range operation. Then Select to set the Voltage measurement range operation to FIXED

B2900 Precision Instrument Family The B2900 family contains products that perform both precision sourcing and precision measurement. www.keysight.com/find/b2900a 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. Although it has the capability to make a wide range of current versus volt- age (IV) measurements as its intrinsic function, the B2900A Series SMU can be used as a voltmeter easily.

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