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Electronic Measurement

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Are Keysight 4145B setup files compatible with the Keysight 4155A/B/C or Keysight 4156A/B/C?
Yes, but check your 4145B disk format. If it is a 1.44MB disk (two sensing holes), the 4155A/B/C or 4156A/B/C thinks it is the older 750KB format. When reading the setup files, a format error occurs. Place cellophane tape over the media density ho...

FAQ 2003-06-13

My Keysight 4155A/B/C or Keysight 4156A/B/C pulsed measurements are not the width I specified, why?
When you set an SMU to Vpulse or Ipulse mode, it assumes you are using FIXED ranging and SHORT integration time. With short pulse widths there is not enough time to AUTO range or make LONG integration measurements...

FAQ 2003-06-13

How do I connect the Keysight 4155A/B/C or Keysight 4156A/B/C to an analytical prober?
Your prober manufacturer should have customized interfaces already available for both manual probe positioners and low level probe cards.

FAQ 2003-06-13

Why do my Keysight 4156A/B IV sweeps saturate around 10mA?
You could be using the SMU SENSE lines instead of the SMU FORCE lines. Check your cable connections to the SMUs. With single triax cable connections it is easy to reverse the connections...

FAQ 2003-06-13

Which versions of the 4062 are supported systems?
Click the above link to view the status of the 4062 family.

FAQ 2003-06-13

How do I test Flash memory cells using the Keysight 4155A/B/C or Keysight 4156A/B/C?
For pulse characterizations during read and write modes, the Keysight 41501A/B with PGUs is recommended. For life testing of Flash cells to 1 million or more cycles, the Keysight 16440A SMU/PGU Selector is required...

FAQ 2003-06-13

What is SPECS?
SPECS (Semiconductor Process Evaluation Core Software) is a semiconductor parametric test shell that runs on the Keysight 4072A, 4072B, 4073A and 4073B Parametric Test Systems...

FAQ 2003-06-13

Do I need a wafer prober with a fully guarded chuck for use with my Keysight 4155A/B/C or Keysight 4156A/B/C?
It depends upon the type of measurements you plan to make on your wafer prober...

FAQ 2003-06-13

Is IC-MS a supported product?
IC-MS was discontinued on September 1, 1998. It is under support until August 31, 2003...

FAQ 2003-06-13

How can I use a power supply without pin A6 (e.g. Keysight E361XA) with the Keysight 4155A/B/C or Keysight 4156A/B/C?
All new Keysight E361XA power supplies will not have terminal A6. Click the link above to learn which connections to use.

FAQ 2003-06-13

Can I force currents or voltages beyond 1A or 200V using the Keysight 4155A/B/C and Keysight 4156A/B/C?
You can force currents or voltages beyond 1A or 200V by adding an external power supply. You only need a simple front panel setup file...

FAQ 2003-06-13

What is TAMS?
TAMS (Test And Measurement Systems) Incorporated (phone: 970-669-6553) is a third-party channel partner supplying support for test and measurement hardware and software products.

FAQ 2003-06-13

The Keysight 4156A/B/C noise level is over 100fA, what am I doing wrong?
Most likely, the current measurement range is limited to 1nA or higher. Make sure the range is set to AUTO...

FAQ 2003-06-13

Can I hookup Keysight 4155A/B/C and Keysight 4156A/B/C SMUs in series or parallel to double the output?
Yes, you can double the voltage to 200V or current to 200mA. See Module 2 of the Self-Paced Training Manual

FAQ 2003-06-13

What are the different Keysight 4155C and Keysight 4156C programming options?
The Keysight 4155C and Keysight 4156C include several different programming languages: ASP, System and User Mode, SCPI, and Keysight FLEX...

FAQ 2003-06-13

Why do the Keysight 4155 and 4156 source measurement units (SMUs) use triaxial cables?
The Keysight 4155A/B/C and Keysight 4156A/B/C are designed for low-current measurement...

FAQ 2003-06-13

What 4284A configuration do I need to make semiconductor CV measurements?
For semiconductor CV measurements, you must order option 001 (Power Amplifier/DC BIAS) and option 006 (2m/4m Cable Length Operation)...

FAQ 2003-06-13

How do I connect the Keysight 4155A/B/C or Keysight 4156A/B/C to coaxial probes?
Click the above link for details.

FAQ 2003-06-13

What hardware do I need to integrate low-level IV and CV measurements?
For making IV measurements, Keysight recommends either the Keysight 4155C or the 4156C Parameter Analyzer...

FAQ 2003-06-13

What is the minimum number of Source Monitor Units (SMUs) recommended for parametric test?
Since a MOSFET is a 4 terminal device (Source, Gate, Drain, and Bulk), the minimum number of SMUs recommended for parametric test is four...

FAQ 2003-06-13

How do I read the fault log of the Keysight 4155A/B/C or Keysight 4156A/B/C?
Press the "System" key on the front of the instrument. Press the "Calib/Diag" softkey at the bottom of the display. Press the "Green" key on the front of the instrument. Press the rightmost softkey at the bottom of the display.

FAQ 2003-06-13

How do I connect a networked printer to the Keysight 4155B or Keysight 4156B?
You need a server on which a Line Printer Daemon (LPD) is running (anywhere within the gateway)...

FAQ 2003-06-13

What are the differences between the Keysight 4155A/B/C and the Keysight 4156A/B/C?
Accuracy is increased from 3pA (Keysight 4155A/B/C) to 20fA (Keysight 4156A/B/C). The Keysight 4156A/B/C SMUs (Source Monitor Units) are designed with low noise inputs (+/- 3fA typical)...

FAQ 2003-06-13

Why does the Keysight 4156A/B/C default to Keysight 4155A/B/C accuracy at boot up?
The Keysight 4156A/B/C can trade off speed vs. accuracy. The Keysight 4156A/B/C boots up optimized for speed. It does this by limiting the lowest measurement range to 1nA (lowest Keysight 4155A/B/C current range)...

FAQ 2003-06-13

What is an SMU?
A Source Monitor Unit (SMU) is the fundamental resource for parametric measurement. The SMU typically has two (mutually exclusive) modes of operation: force voltage and measure current, or force current and measure voltage...

FAQ 2003-06-13

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