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Search found 84 matches

by w2aew
April 4th, 2019, 1:26 pm
Forum: General Discussion
Topic: sample interval
Replies: 1
Views: 252

Re: sample interval

The sample interval will be a function of two things: The horizontal scale setting (time/div), and the Record Length that you have configured. By default, the Record length is 10,000 samples. If you need a smaller sample interval at a given time/div setting, you would go into the Acquire menu and in...
by w2aew
January 17th, 2019, 1:53 pm
Forum: AWG5000/7000/70000 Series
Topic: AWG70002A Maximum Output Frequency
Replies: 2
Views: 1638

Re: AWG70002A Maximum Output Frequency

Using the Basic Waveform Plug-In, you can create a 6.4GHz sinewave. This gives you an oversample rate of 2.5x, which is the minimum recommended for RF applications. The other RF plug-ins can also be used to create more complex RF waveforms with carrier frequencies up to 6.4GHz.
by w2aew
December 30th, 2018, 5:49 pm
Forum: Older and Obsolete Spectrum Analyzers
Topic: Tek 3066
Replies: 3
Views: 1795

Re: Tek 3066

Ok. I can’t make any promises. The 3066/86 pre-dates my time with Tektronix by more than a decade.
by w2aew
December 27th, 2018, 7:10 pm
Forum: Older and Obsolete Spectrum Analyzers
Topic: Tek 3066
Replies: 3
Views: 1795

Re: Tek 3066

I'm not sure if these will help you - but take a look. Here are the images from the disks for the 3086 (same as the 3066 but includes wideband IF and IQ inputs).

https://fortive.box.com/s/lqzhtaimh74gp ... 4gfgrveto8
by w2aew
December 12th, 2018, 7:19 am
Forum: RSA Programming
Topic: Setting the Acquisition Sampling Freqency
Replies: 4
Views: 2536

Re: Setting the Acquisition Sampling Freqency

The hardware in the instrument controls the IQ sample rate as a function of the acquisition BW. There is a table indicating the available acquisition BW settings and the associated IQ sample rates (as well as the recording depth and timing resolution) at each setting. It is on page 33 of the datashe...
by w2aew
December 11th, 2018, 3:59 pm
Forum: RSA Programming
Topic: Setting the Acquisition Sampling Freqency
Replies: 4
Views: 2536

Re: Setting the Acquisition Sampling Freqency

The Acquisition Sampling Frequency is intimately tied to the Acquisition Bandwidth. It is not a function of RBW or acquisition length. There are specific, discrete values of Acq BW and Sample Rate. In other words, you can't set a specific user-defined value. It will always round "up" the the nearest...
by w2aew
December 3rd, 2018, 7:19 am
Forum: General Discussion
Topic: Press 'Single' button on oscilloscope programmatically
Replies: 2
Views: 2234

Re: Press 'Single' button on oscilloscope programmatically

First issue an ACQUIRE: STOPAFTER SEQUENCE
This will setup the Single acquisition.

Then, ACQUIRE:STATE ON will put the scope in Run mode, waiting for the trigger event.

Once the scope triggers, it will be stopped.

To re-arm the Single mode, issue ACQUIRE:STATE ON again...
by w2aew
November 20th, 2018, 10:48 am
Forum: Non- Windows Based Oscilloscopes
Topic: MDO 3102 input capacitance
Replies: 1
Views: 1627

Re: MDO 3102 input capacitance

The front panel on mine indicates 13pF for the 1Mohm input termination.
by w2aew
August 30th, 2018, 1:38 pm
Forum: RSA300/RSA500/RSA600 Series
Topic: rsa306 - Error 302 when setting rbw to 8
Replies: 4
Views: 4535

Re: rsa306 - Error 302 when setting rbw to 8

SignalVu-PC allows you to set RBW down to 1Hz when the Span is <=1MHz.
by w2aew
August 14th, 2018, 1:13 pm
Forum: RSA300/RSA500/RSA600 Series
Topic: rsa306 - Error 302 when setting rbw to 8
Replies: 4
Views: 4535

Re: rsa306 - Error 302 when setting rbw to 8

From the API manual (page 88), users can use SPECTRUM_GetLimits to get the limit of the spectrum settings. The limit table shows the minimum rbw can be set using API is 10 Hz.
by w2aew
July 18th, 2018, 11:29 am
Forum: RSA300/RSA500/RSA600 Series
Topic: Measuring Low 2nd Harmonic Tone without a Filter
Replies: 3
Views: 4772

Re: Measuring Low 2nd Harmonic Tone without a Filter

The RSA306B doesn't give you any user control over the front-end gain stages like the higher performance products do. The front-end gain settings, amplifier selection, etc. is purely under control of the Reference Level setting. The only resort you have with the RSA306B is to increase the Reference ...
by w2aew
July 16th, 2018, 6:27 am
Forum: RSA Programming
Topic: Warm Up period and capturing data
Replies: 3
Views: 4962

Re: Warm Up period and capturing data

I agree with you, and I've previously made that request. I'm not sure if there is a temperature sensor in the unit that can be read for this purpose.
by w2aew
July 3rd, 2018, 4:03 pm
Forum: RSA300/RSA500/RSA600 Series
Topic: Measuring Low 2nd Harmonic Tone without a Filter
Replies: 3
Views: 4772

Re: Measuring Low 2nd Harmonic Tone without a Filter

The RSA30B includes a broadband preamplifier before the pre-selection filters. This preamp is enabled automatically at low reference level settings. It is likely that when you're trying to measure the low level 4.4GHz signal in the presence of the 2.2GHz fundamental, you've got the reference level s...
by w2aew
June 25th, 2018, 10:35 am
Forum: RSA Programming
Topic: Warm Up period and capturing data
Replies: 3
Views: 4962

Re: Warm Up period and capturing data

Glad to help! Keep in mind that we have a number of resources (tutorial videos, etc.) that are available to help get you up and running.
by w2aew
June 25th, 2018, 9:49 am
Forum: RSA Programming
Topic: Warm Up period and capturing data
Replies: 3
Views: 4962

Re: Warm Up period and capturing data

Hello Brian, The "warm up" period is a simple 30 minute timer within SignalVu-PC. If you happen to close and re-open SignalVu-PC, the timer restarts, even if the RSA306B remains plugged in. The RSA306B features a 40MHz realtime bandwidth. Whenever the span (or acquisition BW) is set to 40MHz or less...
by w2aew
June 23rd, 2018, 8:39 pm
Forum: General Discussion
Topic: wide blurry trace tek 2445 scope
Replies: 2
Views: 4957

Re: wide blurry trace tek 2445 scope

My first thought is that the power supply for the x-axis amplifier / driver has a bad filter capacitor and thus has a lot of ripple on it.
by w2aew
May 3rd, 2018, 2:13 pm
Forum: RSA300/RSA500/RSA600 Series
Topic: New RSA603A gives faulty EVM measurements
Replies: 8
Views: 11559

Re: New RSA603A gives faulty EVM measurements

To close this thread - the issue turned out to be with the use of the Adaptive Equalizer. The EQ was enabled and trained before the Alignment was run. Then, after the Alignment was performed, the EQ filter coefficients were no longer applicable, thus the signal was being distorted. The lessons are: ...
by w2aew
April 27th, 2018, 8:05 am
Forum: RSA Programming
Topic: .TIQ file format
Replies: 1
Views: 4287

Re: .TIQ file format

The TIQ format is not published, but there are certainly ways of dealing with it. The first part of the file is a ASCII/XML header which contains setup information for the instrument used for the acquisition, followed by a binary block of IQ data. Your local application engineer can provide you with...
by w2aew
April 9th, 2018, 5:13 am
Forum: RSA300/RSA500/RSA600 Series
Topic: New RSA603A gives faulty EVM measurements
Replies: 8
Views: 11559

Re: New RSA603A gives faulty EVM measurements

Very interesting - it sounds like the internal alignment data in your unit is corrupt. I haven't seen that happen before, but that looks like the likely cause for the problem you're seeing.
by w2aew
April 4th, 2018, 4:58 pm
Forum: RSA300/RSA500/RSA600 Series
Topic: New RSA603A gives faulty EVM measurements
Replies: 8
Views: 11559

Re: New RSA603A gives faulty EVM measurements

I've been running my RSA607A for a few hours under the same conditions and haven't seen this issue pop up. Might I suggest adding the DPX display - if the RSA hardware is producing bad RF data to the PC, it should show up in the DPX display. This might help to narrow down whether the problem is in t...

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