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Can I separately order the heat-resistant cable without ordering E4991U-007 Upgrade Kit?
No. The heat-resistant cable cannot be ordered separately from the E4991U-007 because it has been evaluated for the combination set of heat-resistant cable, test head extension cable, test fixture station and software included in the E4991A-007 or the E4991U-007.
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2008-05-27
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FAQ
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Can I set the E4991A LCD display off?
No, the E4991A cannot set the display off.
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2008-05-27
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FAQ
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Can I use any instrument driver supporting the E4991A?
No, instrument driver for the E4991A is currently unavailable.
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2008-05-27
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FAQ
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Can I use the 16092A with the 4395A/4396B/4287A/E4991A?
Yes, you can use the 16092A with the 4395A/4396B/4287A/E4991A.
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2009-01-14
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FAQ
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Does typical permittivity measurement accuracy includes all the uncertainties due to the E4991A with option E4991A-002, 16453A and MUT insertion conditions?
Yes. All the uncertainties are included in the typical measurement accuracy. The E4991A with Option E4991A-002 and the 16453A perform permittivity measurement according to the theory described in Appendix E of the E4991A operation manual. For the typical permittivity measurement accuracy of the E4991A with option E4991A-002, refer to specification in the E4991A operation manual.
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2008-05-27
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FAQ
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How can I estimate the sweep measurement time of the E4991A?
The following procedure can be used to simply estimate the sweep measurement time under the current measurement settings.
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2008-05-28
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FAQ
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How do I get Instrument Drivers for Agilent Test & Measurement Products?
From the CD shipped with the instrument or from the product technical support web page for the instrument.
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2009-05-01
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FAQ
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How often should we perform the verification procedure described in the Performance Tests section of the manual?
Every 12 months.
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2008-01-11
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FAQ
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How should I define or select the residual inductance values of Shorting Bars when performing Short compensation on the E4991A or the 4287A?
The residual inductance value of Shorting Bar has been traditionally defined as 0 Henries (impedance 0 Ω). Agilent has also been taking the traditional definition method. Nowadays, IEC 62024-1 Ed.2.0: 2008 "High frequency inductive components - Electrical characteristics and measuring methods - Part 1: Nanohenry range chip inductor" and compatible national standards DIN IEC 62024-1, BS EN 62024-1 and JIS C 62024-1 stipulate the dimensions of shorting devices and the Short Compensation method which uses the defined inductance values of the shorting devices. It is recommended that you take into considerations these authorized standards, especially when measuring low inductance DUTs.
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2008-05-27
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FAQ
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Is it possible to separate the test head from the E4991A and interconnect them with cables?
Yes. It is possible with option E4991A-010 or option E4991A-007 only. Option E4991A-010 probe station connection kit provides cable accessories to extend the test head and to integrate it into a probe station. Option E4991A-007 provides high temperature cable and test head extension cables required for measuring temperature characteristics of DUT by using temperature control chamber (oven). Please refer to Appendix B and C of the E4991A operation manual for the details.
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2008-05-27
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FAQ
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Is there a master listing of compatible printers for various network analyzers and impedance analyzers?
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2007-07-10
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FAQ
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On my Agilent Impedance Analyzer, I am realizing measurement results which appear questionable. Can you explain?
The measurement results can often be improved with a simple modification in the type of correction applied by the instrument.
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2007-08-28
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FAQ
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The key cap of the power switch tends to come unfastened. What measure can I take to meet the situation?
It is recommended to replace with 0371-3953.
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2008-06-30
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FAQ
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What are primary differences between the E4991A and 4291B?
The major difference is frequency range. E4991A can sweep up to 3GHz while the maximum frequency of the 4291B is 1.8GHz. The E4991A employs single test head covering entire measurement range while the 4291B had 2 types test heads for low impedance and high impedance measurements, respectively. Limit test function is also different. Please refer to Appendix H in the E4991A operation manual for detail.
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2008-05-27
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FAQ
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What are the frequency limitations on the various probes utilized with the Agilent 85070E Dielectric Probe Kit and why?
The 85070E Dielectric Probe options 020, 030 and 050 have maximum frequeny via the E4991A Impedance Analyzer of 3 GHz.
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2009-05-28
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FAQ
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What is required to use Remote UI for the E4991A?
You need to prepare the following items: the E4991A, a PC, the E4991A VBA software (E4991A_vba.msi) included in the furnished CD-ROM and, LAN environment.
For details, please refer to chapter 10 "Using LAN" of the E4991A operation manual.
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2008-05-27
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FAQ
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What is the output impedance for the various Agilent Impedance Analyzers?
The table below lists the output impedance for the various Agilent Impedance Analyzers.
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2006-08-15
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FAQ
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What is the output impedance of the E4991A?
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2008-09-11
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FAQ
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What is the recommended procedure for measuring the impedance tangent delta?
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2005-04-19
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FAQ
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What resources does Agilent recommend to help facilitate learning proper impedance measurement techniques?
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2008-01-14
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FAQ
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What should I do when the "RF overload" message is displayed on the E4991A?
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2008-09-11
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FAQ
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When performing materials measurements using the Agilent E4991A and 16453A fixture I obtain unstable measurement results above 1.0 GHz. Why?
The Agilent E4991A is specified to 3.0 GHz. However, for material measurements, the Agilent 16453A test fixture is specified to 1.0 GHz.
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2006-07-31
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FAQ
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Where can I find manuals for discontinued and obsolete Hewlett-Packard and Agilent test equipment?
Most Agilent products have PDF manuals that can be found on product pages. Other vendors also supply old manuals.
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2009-11-04
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FAQ
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While measuring capacitors with my Agilent impedance analyzer, I am realizing negative values for Q and D. Can you advise?
For low loss devices (high Q, low D) it is not uncommon to realize negative readings on an LCR meter / Impedance analyzer. Note that the negative reading is physically impossible (for passive components) and the following explanation is provided.
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2007-09-14
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FAQ
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Why doesn't the E4991A have Load compensation function?
Performing Load compensation in addition to Open/Short compensation is equivalent to performing Open/Short/ Load calibration at DUT contacts of test fixture (by using the working standard devices). Since the Open/Short/Load calibration at DUT contacts can completely substitute for the Open/Short/Load compensation, the E4991A does not have the Load compensation function.
Use the Open/Short/Load calibration function instead of the Open/Short/Load compensation when the Load compensation is required.
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2008-05-27
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FAQ
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