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Frequently Asked Questions

How do I create a single pulse with SourceXpress?
Creating single pulses for your Arbitrary Waveform Generator in SourceXpress simply requires some consideration to your AWG’s sample rate, and a waveform file. Remember the time of any signal output by an AWG = the sample rate of the AWG / the number of …

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What are the differences between the TBS1000C and TBS1000B?
Enhancement: Longer record length for 20k compared to 2.5k on the B model scope 10 x 15 divisions graticule area compared to 8 x 10 on the B model scope Cursor support with on screen readouts in math FFT Improved noise level Vertical …

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What is the difference between the 2230 and 2230G?
The G designation in Keithley power supply model numbers indicates that the power supply has a built-in GPIB port. However, some models might include a GPIB port without having a G in their model number. Check the instrument datasheet for the most accurate …

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How to configure the Model 6220/6221 and 2182A for Delta Mode?
The Keithley Models 6220 and 6221 Current Sources are designed to work with the Model 2182A Nanovoltmeter to measure very low resistances. A good method of doing this is called the Delta Method as described in the Keithley Low Level Measurements Handbook …

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Why do I measure a different value between channel 1 and channel 2 on my 2182A?
When measuring the same voltage source, if you notice a difference in reported voltage between channel 1 and channel 2 of your nanovoltmeter, you might be seeing the effects of pumpout current. This effect is significant when measuring voltages <1V and the …

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SourceMeter or Source Measure Unit (SMU)?
A Source Measure Unit, shortened to SMU, is a particular class of instrument. Think of this phrase on the same level as oscilloscope or digital multimeter. They might also be known as source monitor units, source-measurement units, or other phrases that …

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TSG4100A - Output Level Accuracy (IQ modulation relative to CW) test procedure
Here is the revised Output level accuracy (IQ modulation relative to CW) test procedure for TSG4100A.  An updated revision for the specification and performance verification document 077-1078-00 Revision B.   

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How do you find the transconductance of a MOSFET?
Transconductance is a key test for validating the MOSFET performance in power electronics designs. It ensures that a MOSFET is functioning properly and helps engineers choose the best one when voltage gain is a key spec for their circuit designs. This, in …

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What is Spectrum Analyzer Software Used for?
Spectrum analyzer software allows a user to analyze the electrical signals created by a sensor or device. In some cases, spectrum analyzer software can refer to software that displays the spectral content of audio signals. However, in radio frequency (RF) …

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KickStart Power Supply FAQs
What power supplies are supported in the power supply app? The app supports the Keithley 2280S-32-6 and 22380S-60-3 Precision Measurement DC Power Supplies and the 2281S-20-6 as a power supply only; the Series 222x and 223x DC power …

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