Hi, This N9030A PXA Signal Analyzer has analog zero span out?
I mean in zero-span mode, the spectrum analyzer works as a "frequency-selective oscilloscope, with the bandwidth determined by the Resolution Bandwidth (RBW) setting. Only frequencies well within RBW/2 of the center frequency will be observed" Measuring in time domain using spectrum analyzer So, could I do more than just "oberseved" the signal in those frequencies?, can this signal be represented in real-time through an analog output when zero-span mode is enabled?
The X-Series analysers have an output on the rear panel labelled Analog Out. This is the demodulated and detected envelope from the Digital I.F. assembly.
As previously mentioned, this output is bandwidth-limited by whatever resolution Bandwidth is selected. Also, because this is a post-detection envelope signal, the phase information has been lost, so it will not be an exact equivalent of what you would get on a time-domain device, like an oscilloscope. See page 20 of AN 150 here for more explanation: [http://literature.cdn.keysight.com/litweb/pdf/5952-0292.pdf?id=1000000159:epsg:apn].
In a unit with standard configuration, this output is Digital Audio. Option *YAV* adds Screen Video, Logarithmic Video and Linear Video outputs from this same connector (BNC female).
More detail in the X-Series Programming Spectrum Analyser Mode Programming Guide, page 307: [http://literature.cdn.keysight.com/litweb/pdf/N9060-90027.pdf?id=879209].
These outputs are selectable from the front panel: *Key Path: Input/Output, Output Config, Analog Out*
or remotely via SCPI commands: *:OUTPut:ANALog OFF|SVIDeo|LOGVideo|LINVideo|DAUDio*
If you are looking to recover modulation signals wider than the default resolution bandwidths, then consider the Auxilliary IF output options *CR3* (2nd I.F. output), *CRP* (Arbitrary I.F. output, 10 MHz to 75 MHz) or *ALV* (Log Video output). These add a rear panel SMA female connector output, the output being selectable from the front panel, or remote SCPI commands.
This output is the 322.5 MHz I.F. output from the RF front-end, before it is detected and filtered by the AIF and DIF boards. The maximum effective bandwidth will vary depending on the Analysis Bandwidth options that may be fitted:
B25 = 10 MHz to 25 MHz (standard)
B40 = 10 MHz to 40 MHz
B85 = 40 MHz to 85 MHz
B1A = 85 MHz to 125 MHz
B1X = 85 MHz to 160 MHz
More upgrade detail can be found here: [http://www.keysight.com/main/editorial.jspx?cc=GB&lc=eng&ckey=825159&nid=-33932.731473.02&id=825159&cmpid=zzfindmxa_upgrades]
I hope this helps. Regards, Simon Coleby.
Edited by: simon_coleby on Oct 15, 2015 7:51 AM
Edited by: simon_coleby on Oct 15, 2015 7:52 AM
Edited by: simon_coleby on Oct 15, 2015 7:53 AM