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What is 802.11af, and does Keysight have a solution for testing 802.11af devices?
Learn more about Keysight's 802.11af solutions…

FAQ 2014-02-28

Where can I find information or example programs using the API for Signal Studio?
The Signal Studio for pulse building help file has information and example programs under the API control chapter.

FAQ 2013-05-16

How much time/frequency error is introduced by the Custom Profile or Custom I/Q resampling?
After using the formula to calculate the number of resampled data points, work backwards to determine the error.

FAQ 2012-12-28

Why can’t I view a help file downloaded from the Keysight website?
After downloading the file to your PC, open it from the location it was saved and a security warning appears. To view the help system, clear the checkmark from the "Always ask before opening this file" check box.

FAQ 2012-12-28

Do corrections work with frequency and amplitude offsets?
Yes, however, the amplitude flatness accuracy is set by the spectrum analyzer flatness accuracy across the signal bandwidth...

FAQ 2012-12-28

What happens to nested patterns and off-time packets in pulse mode?
Nested patterns are flattened. This means that a single trigger will not play the entire pattern. It merely steps into the pattern and plays the first pulse. The next trigger plays the next pulse, etc. Off-time packets are ignored in pulse mode.

FAQ 2012-12-28

How many measurements do I need to make and how long is the predistortion data good?
The number of measurements needed depends on the number of parameters that are changed. The calibration (measurement data) could be valid for two days or longer.

FAQ 2012-12-28

How can I de-embed a test fixture using the 86100C/D Digital Communications Analyzer?
N1010A software with InfiniiSIM-DCA option provides the capability to de-embed and embed fixtures, cables, probes, and other circuit elements.

FAQ 2012-09-25

Does 89600 VSA software (89601) support the Bluetooth® Difference Error Vector Magnitude (DEVM) test?
The 89601 Option AYA does not provide DEVM results for Bluetooth basic measurement. Keysight recommends using N9081A Bluetooth measurement application.

FAQ 2012-03-27

How do the 89400 and 89600 families of vector signal analyzers (VSA) perform carrier-locking on a digitally-modulated signal?
First, the center frequency must be set to the carrier frequency within ±3% of the symbol rate...

FAQ 2012-02-25

Is 4-port calibration using the 2-port ECal module supported on ENA Option TDR?
No.

FAQ 2012-02-02

On mixer measurement with the ENA and external signal source, should I connect frequency references of the ENA and external signal source?
Yes.

FAQ 2011-10-16

Is there an outline to achieving a simplified mixer conversion loss measurement on the ENA?
Option 008, Frequency offset, is required for mixer measurements utilizing these analyzers.

FAQ 2011-10-16

Can the ENA make mixer measurements?
Yes. With option 008 (Frequency-Offset Mode), you can measure frequency-converting devices, such as mixers.

FAQ 2011-10-16

In ACLR eNB limit, LTE 3MHz bandwidth adjacent channel carrier filter BW is the same as channel BW. Is this true?
No. The bandwidth of filter should be transmission bandwidth configuration BWconfig, not channel BW.

FAQ 2011-07-25

Does the Keysight solution support the 4x4 MIMO tests for LTE TDD?
Yes, the N7625B can make downlink MIMO configurations (up to 4x4) with static fading including spatial multiplexing with CDD (cyclic delay diversity) and transmit diversity.

FAQ 2009-11-13

Does the ESG or MXG with N7625B Signal Studio support the UE receiver tests?
Yes, the E4438C (ESG) or N5182A (MXG) with the N7625B LTE TDD signal studio can generate both LTE TDD downlink and uplink signals. So it can be used for receiver components (such as power amplifiers and transmitter, receiver, or transceiver RFICs)...

FAQ 2009-11-13

Does the N7625B support multi-user PRACH generation?
Yes. Keysight’s products support both multi-user PRACH generation. In the N7625B, besides “Basic LTE TDD” and “Advanced LTE TDD carriers”, there is another carrier type named “PRACH LTE TDD”. You can setup either single user PRACH or multi-user PR...

FAQ 2009-11-13

What kind of Baseband filter for P-SS?
The LTE standard does not specify what transmitter filter to use. For the transmitter in ADS, we use ideal low pass filter or RRC filter; for signal studio, we use ideal low pass filter to filter baseband signal, no specific filtering on P-SS. In ...

FAQ 2009-11-13

Can measurements be made on the saved waveforms?

FAQ 2008-08-03

Is it possible to save multiple TDR traces and display them as waveforms on the oscilloscope for comparison to my current measurement?
It is possible to save multiple TDR traces as an internal format for future reference...

FAQ 2008-08-03

Is it possible to save a previous TDR measurement waveform and load as a comparison for my current TDR measurement?
It is possible to save a previous TDR measurement waveform and load it onto the oscilloscope as a comparison to the current measurement.

FAQ 2008-08-03