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89610A I/Q channels synced measurements using external clock

Question asked by adnanashraf on Feb 14, 2012
Latest reply on Feb 17, 2012 by tabbott

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Hello,

I am using Agilent 89600S VSA in two-channel 89610A configuration. I want to capture (and record) I and Q channels simultaneously with an externally applied 10 MHz ADC sample clock.

Now, what I understood is that the VSA software does not allow the ADC sample clock to be applied externally. The 'Agilent E1438 Soft Front Panel' allows the external sample clock option but it communicates with only one ADC. Even, if two 'Agilent E1438 Soft Front Panel' softwares are used for both ADCs, then sync measurements cannot be done.

Please suggest, what to do.

Thanks and Regards,

Adnan

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tabbott

Feb 14, 2012 2:35 PM

Hi -

It is correct that the VSA software does not allow you to use an external sample clock with this hardware system. The software will resample the data based on the frequency span you have selected within the software as shown on this help text page. http://wireless.agilent.com/wireless/he ... ctions.htm
This will allow you to obtain data at any sample rate you desire.

Regards -

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adnanashraf Feb 15, 2012 11:57 PM

Ok.

Can you please tell that Ext Trigger BNC input pin on Agilent E1438C module in 89610A VSA with serial number US43490526 can be given a TTL signal or only ECL signal? I've read the documents and found some conflicting statements e.g.,

In http://cp.literature.agilent.com/litweb/pdf/5968-8233E.pdf, it is written TTL trigger is currently only available on the E1438D. Whereas in http://www.home.agilent.com/upload/cmc_upload/All/E1438C-D_Users_Guide.pdf, it is written AGE1438_EXTERNAL_TTL is supported on all E1438B, C and D modules, but it is not supported on early E1438A modules. A module with a serial number lower than US41140000 will result in the error AGE1438_TTL_TRIGGER_NOT_SUPPORTED.

Regards,

Adnan

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tabbott

Feb 17, 2012 8:38 AM

Hi Adnan -

Yes this module can be used with TTL and ECL trigger signals.

Details are available on these help pages.
http://wireless.agilent.com/wireless/he ... pe_ext.htm
http://wireless.agilent.com/wireless/he ... extttl.htm

Regards -

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3 Replies

tabbott Feb 14, 2012 2:35 PM
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Correct Answer
Hi -

It is correct that the VSA software does not allow you to use an external sample clock with this hardware system. The software will resample the data based on the frequency span you have selected within the software as shown on this help text page. http://wireless.agilent.com/wireless/he ... ctions.htm
This will allow you to obtain data at any sample rate you desire.

Regards -
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adnanashraf Feb 15, 2012 11:57 PM
Mark Correct
Correct Answer
Ok.

Can you please tell that Ext Trigger BNC input pin on Agilent E1438C module in 89610A VSA with serial number US43490526 can be given a TTL signal or only ECL signal? I've read the documents and found some conflicting statements e.g.,

In http://cp.literature.agilent.com/litweb/pdf/5968-8233E.pdf, it is written TTL trigger is currently only available on the E1438D. Whereas in http://www.home.agilent.com/upload/cmc_upload/All/E1438C-D_Users_Guide.pdf, it is written AGE1438_EXTERNAL_TTL is supported on all E1438B, C and D modules, but it is not supported on early E1438A modules. A module with a serial number lower than US41140000 will result in the error AGE1438_TTL_TRIGGER_NOT_SUPPORTED.

Regards,

Adnan
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tabbott Feb 17, 2012 8:38 AM
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Correct Answer
Hi Adnan -

Yes this module can be used with TTL and ECL trigger signals.

Details are available on these help pages.
http://wireless.agilent.com/wireless/he ... pe_ext.htm
http://wireless.agilent.com/wireless/he ... extttl.htm

Regards -
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89610A I/Q channels synced measurements using external clock

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