How to adjust adjacent channel bandwidth to 30 kHz and leave primary at 1.23 MHz

[Slaughter]

I would also like to level trigger on the RF input of my NI PXI-5660

[Brent_R]

Take a look at the shipping example called "RFSA Adjacent Channel Power Application Example.vi". If you dig down several levels in the VI heirarchy, you will find "SML Adjacent Channel Power.vi". This is where the actual channel powers are calculated for the center, upper, and lower channel. You will see the simple arithmetic that calculates the frequency bands for each channel. Using this technique and the "SMT Power In Band.vi", you can calculate channel powers for any channels you want with any bandwidth.

Regards,

Brent R.
Applications Engineer
National Instruments

[Andy_Hinde]

Hello,
The ACP measurement VI in Spectral Measurements Toolkit uses the same bandwidth for the primary channel and 2 adjacent channels. If you want different bandwidths for these, it is a very simple matter of using three power in band measurement VIs with their own center frequencies (primary, two adjacent) and bandwidths.

Analog triggering on the 5620 will be available in the next release of NI-Scope. If you would like the software now in pre-release format, please contact me at andy.hinde@ni.com.