Phase noise mode for Agilent MXA N9020A

Hi All, I am looking for a Labview program of Phase noise mode of Agilent N9020A, because on the driver no configure for this mode. Could someone help and point me how to have it. Thank you Steve

Hi Ray, Thanks very much for your help. On our SA it has an option for phase noise and set up the step by step are: Hit MODE Select PHASE NOISE Then hit MEAS Select LOG PLOT Then hit SPAN to setup the Start offset Freq and Stop Offset Freq Then hit MARKER FUNCTION to set RMS NOISE to DEGREE and BAND ADJUST for set the Freq Left and Right Then hit Marker to set MARKERTABLE ON. This will measure a DEGREE
Thank you
Steve

Similar Messages

What are the phase noise specifications for the 10 MHz internal reference in the PXI-5661?

Im looking for the phase noise specification on the 10 MHz internal reference for the PXI-5661.

Hello Bob,
As you may have noticed, and the likely reason for this post is that that spec is not readily available for the PXI-5600. You will however notice that the overall phase noise of the system is noted and my suspicion is that even though the 10Mhz reference helps improve the overall phase measurement, it won't necessarily dictate the measurement. I can ask R&D for this spec but they will likely inquire the need for this specification. Do you intend to use an external source instead of the built in reference?
Regards,
Glenn M
Application Engineer
Regards,
Glenn

Have anyone used R&S FSEA30 with Labview for Phase Noise Measurement?

Hi,
I just accquired a Rohde & Schwarz FSEA30 spectrum analyser. I wonder if anyone here can share their experience in using Labview 8.21 Professional to perform Phase Noise Measurement. I believe Labview 8.21 is far more flexible and powerful than R&S' discontinued FS-K4 Phase Noise Measurement software, which is still being offered at US$3,000 (refurbished).
Any links to necessary info and software would be most welcomed.
Thanks
Patrick
Message Edited by PatrickKan on 01-17-2007 03:21 AM

Hi Patrick,
I've used LV to carry out Phase Noise measurements on both R&S and Agilent Spectrum Analyzers ( using LV6.0 to LV7.1). I have used LV8.2 for other purposes.. I tend to prefer R&S over Agilent, especially when programming LV code. In both cases I've used LV drivers or simply sending instrument commands via GPIB. The FSEA30 is a very nice SA.
The advantage of the FS-K4 software is that it does the calculations for you, thus greatly reducing implementation time. And for a company, it may very well be worth the investment, especially at US$3K.
Sharing software (vi's in this case) is / will be difficult, since the developped sw is owned by the company for whom it was developped. For instance, I no longer work for the co where this was done for the R&S. Recently, I implemented a routine for an Agilent SA. It had a built-in option to carry out the measurements, so the implementation was merely setting up the SA, go into Phase Noise mode (MOV PH commands, PH_F, PH_MEAS, etc) and that was it. I seem to recall something similar for the R&S, which was a few years ago.. but I think it also had an option to do the PN measurements.. (I will now have to visit R&S website to refresh my memory).
All & all, using LV8.2 & R&S SA is a perfect combination. Their LV drivers are quite useful and simple to use. I like how they are listed on the block diagram of the tree.vi.
RayR

Agilent E5500 Phase noise test system.

I have an E5500 Phase noise test system. It has it's own HP Vectra PC and
phase noise application. It looks like the PC has the instruments as Active
X resources. I need to automate some of the phase noise tests in with
existing labview code if I can. Has anyone ever had a "chat" between labview
and this test system via Active X before?What traps or worries are there? Or
do I tread new ground. Alternatively I would have to translate my laview
code into HP Vee. Or is there a Visa path ? Any expert advise appreciated.
Leo

Hi Hunter,
What was the design of the hardware filter that effectively reduced the noise, and how do you have your SW butterworth filter configured? One of the drawbacks of using a software-defined filter is that it does NOT provide anti-aliasing. That is, if you have noise components at a higher frequency than Nyquist (in your case only 500 Hz), then this noise would be aliased back down into your signal of interest.
*You could characterize the noise a bit better by sampling on a single channel of the 6225 at a much higher rate, then look at the data in the Frequency domain by taking an FFT in LabVIEW. Make sure to acquire enough points to have adequate resolution when you take your FFT (see The Fundamentals of FFT-Based Signal Analysis and Measurement in LabVIEW and LabWindows/CVI).
So, increasing your Nyquist frequency (by increasing your sample rate) could give some benefit depending on the characteristics of the noise you are seeing (you would have a higher alias-free bandwidth which you would be able to filter in software). If there is noise present at certain frequencies higher than your nyquist frequency, we should be able to choose a sample rate that will alias this noise to a frequency that we can still filter out in software.
Also, if your twisted-pair wiring is not connected differentially I suggest doing so if you have enough channels available on the 6225 (you can connect up to 40 differential pairs). For more information about connecting your signals you can check out the Field Wiring and Noise Considerations article.
Best Regards,
John
John Passiak

I am getting noise clusters in differential mode for ground refeenced source

I am using DAQ board PCI-MIO-16E-1 and 2090 BNC as termination accessory. I want to aquire data from a ground referenced source.I am getting a lots of shot noise which is having a peiodic envope of 55 Hz frequency .These clusters are never removed in all the three modes but the strange thing is that i am having better results in RSE mode than in differential mode for the same source.This looks like a conflicting obervation from what is recomended.What may be the source for these peiodic noise clusters which are unavoidable.
One clue is that we get the same signal if we acquire data between our source ground and earth and same is the case for our computer.This noise is not removed ev
en if we short grounds of PC and our ground reference source.
Attaced is the file having the picture of noise i get.
Attachments:
noise_pic.bmp ‏231 KB

Hello;
Noise is a difficult issue to advise about.
There are some things you can try, but the result will depend on different factors, such as, environment, lenght of cables, equipment on vicinity, etc.
Anyways, you can try to hook up a BIAS resistor in between the ch- and AIGND on your BNC device. That resistor will bleed out the common voltage current and help on noise balancing. Another thing you can try is to hook up a simple RC low pass filter at the analog input. That might help to get rid of that noise.
I'm also attaching an App Note that talks about Noise and some ways to get around it.
Hope this helps.
Filipe A.
Applications Engineer
National Instruments
Attachments:
Field_Wiring_and_Noise_Considerations.zip ‏196 KB

LabVIEW drivers for Agilent Noise Source 346B and Signal Generator E8257C-520

Could anyone please tell me where to find LabVIEW drivers for Agilent Noise Source 346B and Agilent Signal Generator E8257C-520. I did not find them on NI's web site. Thank you!

To my knowledge, the Agilent 346B Noise Source is not a programmatically controllable instrument and therefore we can't create an instrument driver. I suppose it is possible to be controlled through an instrument (like the PSG) but I don't see any documentation on this.
As for the E8257C, we are insterested in providing a LabVIEW driver for this instrument series. Let me know if you are interested in assisting our development effort by loaning us the instrument.
Jason Hobbs
Instrument Drivers

How to measure static phase noise by N4440A spectrum analyzer

Hi, i am new in the RF measurement, and i have to measure the static phase noise, stray and pulse modulation of a DUT, please explain me how to use the spectrum analyzer (N4440A) for this purpose. It will be very helpful for me if you explain the steps for the measurement. Thanks and best Regards

Hi Ikram!
This is Peter Erskine in Applications Engineering. I was not able to find any information on a N4440A Spectrum Analyzer. However, I was able to find information on a E4440A spectrum analyzer. This is a spectrum analyzer developed by Agilent, and you can find the user manual here.
If you are looking to use this spectrum analyzer in LabVIEW, National Instruments has the E4440A instrument driver page that will help you out. If you have any additional questions about how to use LabVIEW with this analyzer, please let me know. I will be more than happy to answer any questions you may have.
However, if you are looking to get help on the spectrum analyzer itself (without the use of LabVIEW), I would suggest contacting Agilent's technical support either by phone or on their forums for additional information.
Have a great day!
Peter E
Applications Engineer
National Instruments

When using MT ni5660 phase noise.vi readings at 10KHz and 100KHz offset are both -88dBc/Hz.

Hi
I am trying to measure phase noise at 10KHz and 100KHz offset using MT ni5660 phase noise vi as shipped with modulation toolkit. Both results at offsets are -88dBc/Hz, I am expecting -62dBc/Hz at 10KHz offset and -85dBc/Hz at 100Khz offset as measured on hp8560A spectrum analyser. I am using pxi 5600 downconverter and pxi 5620 digitizer with labVIEW 2012. I have only been using PXI for a little while so am not to familiar with it. Any ideas as too what i am doing wrong or have not set up correctly.

Hi Hands
Thanks for your post. Do you get this only when you have 10KHz or 100KHz? I'm curious to know what this device displays at other frequency ranges if possible?
Many thanks
Dan.H
National Instruments
UKAE

Does anyone still deals with HP3048A Phase Noise Measurement System?

Hello,
I am currently on a project dealing with phase noise measurement. The instrument available is HP3048A(Phase Noise Measurement System)
However, I have this problem that is to extract the program codes used to control various equipment: HP11848A (Phase Noise Interface), HP3561A(Dynamic Signal Analyzer)using LabView 6.1 because I do not have the program codes to control them. The interface used: GPIB
I have the program used by HP3048A to control the instrument but the language is BASIC and the codes used does not seems to work well in Labview 6.1
For example: "RST" when input via using HP3048A can preset the instrument 3561A but does not work for LabView6.1
Can anyone out there help me?
Regards,
Daniel

Hello,
Using VISA while specifying your GPIB resource, you should be writing whatever string you send, and your instrument should receive it. This should be completely independent of the language used. I know that *RST is a rather common command, and semicolons often delimit multiple commands sent at once. Can you try *RST and *RST; just to see if they work? Can you verify the precise command(s) in the user manual? Does any other command work using VISA?
Just a few things to try as we figure out what's going on!
Repost if you're still having trouble communicating!
Best Regards,
JLS
Best,
JLS
Sixclear

Looking for Labview driver for Agilent 4294A (HP)

Help!
I've been browsing the driver database looking for the Labview GPIB driver
for Agilent(formerly HP) 4294A Gain-Phase Analyzer.
Does anyone know where I can get it?

Hello all,
NI is interested in developing LabVIEW and CVI drivers for the Agilent 4294A. I have been trying to obtain one of these units on loan from Agilent for the past couple of years with no success. If anyone can spare their 4294A for the duration of driver development or can influence Agilent to loan a 4294A, NI will write certified CVI and LabVIEW drivers for it.
Jason Hobbs
Instrument Drivers

How to do carrier phase measurement of any RF signal and Phase Noise measurement of any RF signal?

Hello,
Can any one give some idea to do carrier phase measurement and Phase Noise measurement of any RF signal?
Regards,
Vijay

Vijay,
A great example for measuring RF phase noise can be found in the LabVIEW Example Finder. The name of the VI is "MT RFSA Phase Noise.vi" This example performs phase noise density measurements on I-Q data acquired using RFSA. You may also want to take a look at Performing Modulation Measurements on Real-World IQ Data With Carrier Frequency Drift to see if phase measurement could be implemented: http://sine.ni.com/apps/we/niepd_web_display.display_epd4?p_guid=EEAFD63A09CD3B79E0340003BA7CCD71&p_node=200054&p_source=External
What type of RF signal would you be analyzing? Are you trying to measure phase shift of a carrier frequency that is varying with time?
Shea C
Applications
NI

Instrument driver for agilent 8960 to run CDMA tests

Hi, just wonder if there is an instrument driver for agilent 8960 to run CDMA tests? I know 8960 has E1963 and E1968 driver, but 1963 is designed for W-CDMA and 1968 is for GSM/GPRS/EGPRS. So is there a driver designed for CDMA mode? Thanks a lot!
Solved!
Go to Solution.

Unfortunately, it does not appear that there currently is one. When I search the Instrument Driver Network I only find the two drivers that you pointed out.
Brandon Treece
Applications Engineer
National Instruments

Phase noise or jitter analysis

Hello,
Does anybody know how to perform an analysis on a captured analog signal (such as acquired by a data acquisition card) that results either in a measurement of phase noise or phase jitter.
Regards,
Ben Gilbert

Hi Ben,
There's not a VI that readily output what you are looking for, however, there are analysis VIs we can make use to achieve it. Exactly what kind of analysis are you trying to do for phase jitter? Absolute jitter, period jitter, or cycle to cycle jitter? What about phase noise? Do you have a reference signal? Please specify what your set up is, what you have to work with and what you are trying to achieve. Thanks!
Yi Y.
Applications Engineer
National Instruments
http://www.ni.com/support

5660 - How does spen determine phase noise?

I am writing a driver to make the 5660 function as a spectrum analyzer. In one of the manuals I found this statement:
span specifies the expected bandwidth of the RF input signal. You can specify a span value between 0 and 20 MHz. Span values affect phase noise and down converter tuning step size, as shown below:
span setting phase noise tuning step size
<= 10 MHz best 5 MHz
> 10 MHz good 1 MHz
Default Value: 20 MHz
Note: The NI 5600 RF down converter module hardware always down converts a 20 MHz bandwidth. Software span settings are used to determine optimal phase noise/tuning step size combinations.
I am wondering how this happens and if I should write my driver to take spans less then 10 MHz. Is the phase noise better with smaller spans? e.g. to get a span of 64 MHz is it better t take 7- 10 MHz spans or 8 - *MHz spans?
Terrill

Why are you rewriting the multi-span example? NI-RFSA 1.5 installs a new set of LabVIEW driver VIs for the PXI-5660. They add multi-span capabilities automatically such that requesting a 100 MHz span, for example, results in 5 20 MHz chunks being acquired and concatenated automatically. In addition, programming the PXI-5660 is far easier with these VIs in general.
The VIs are installed into the Instrument I/O->Instrument Drivers sub-palette in LabVIEW.
As for the HW, yes - requesting a smaller span of frequencies (<= 10 MHz) causes the PXI-5600 to tune in larger increments (5 MHz). This is not a function of software, as the software is written as a function of the HW. If you want to force best phase noise, go into the code for the ni5660 Configure for Spectrum (NI-RFSA 1.5), look for the code inside the FALSE case of the case structure (which is for multi-span), look for the niTuner Set Freq VI and wire an array of spans whose length is equal to the length of the frequency array and whose elements are all values <= 10 MHz.
This is not recommended and any problems incurred as a result of changing the default behavior of the instrument will not be supported.
You can install NI-RFSA 1.5 from here:
http://digital.ni.com/softlib.nsf/websearch/C1A9A160FA5AD89B86256ED8005E0761?opendocument&node=132060_US

P67A-GD55 board stuck in "CPU is in 1 phase power mode" loop.

New build: mobo: as stated, CPU: i5-2500k, Cooler: Cooler Master TX3, PSU: OCZ700SXSP, RAM: 4x2GB PNY DDR3-1600, GPU: EVGA GT440, HDD: WD500AAKX, DVD: LGGH22NS50. System assembled without a hitch in Cooler Master Centurion 534+ ATX case.
Moment of truth: Switch PSU on. System launched into loop of CPU 1 phase power mode = on for fraction of second, off for 1-2 sec. The indicator is led 1 of 6 lighting briefly with each cycle. The FP power led lights up and the fans all spin during the brief on periods. Started disconnecting peripherals and power connections, removing ram and at each test there was no change. Got down to just PSU and mobo with still no change. Pulled CPU power connector leaving just mobo 24 pin and still no change. Reseated CPU and switched coolers somewhere in the middle of that.
What have I missed that will get this system to boot?

Last update to this thread, just to say problem completely solved with the replacement mobo from MSI. This one booted up the way it should and my new system is purring and running quite cool under all default settings. Have just two 120 mm case fans, one intake and one exhaust, plus TX3 cooler on the i2500k. MSI software says CPU is running about 29 degees and NZXT sentry 2 fan controller says bottom of heatsink is 23-24, with all temps min the case < 25 and no warm air exhaust. Must be the relatively mousy GPU (EVGA GT440) not cooking everything in the neighborhood.
I didn't build this for gaming, just for running a very large number of browser, Excel, Windows Explorer et al windows at the same time without hanging. It's doing that now under W7 Pro 64bit. to MSI for backing up their warranty and from me when I use the new rig.

Phase noise mode for Agilent MXA N9020A

Similar Messages

Maybe you are looking for