What is P25 and C4FM+ and do your Spectrum Analyzers do this standard?

What is P25 and C4FM+ and do your Spectrum Analyzers do this standard?

P25 is also known as Project 25, or APCO 25. C4FM is a modulation style used for Phase 1 of P25.

P25 testing is available on a number of Tektronix instruments:

• Real time Spectrum Analyzers with option 26 support compliance testing for P25.
• Off-line analysis is available with SignalVu-PC-SVE (and option SV26) running on a PC, laptop or tablet.
• Tektronix MDO4000B can also be used to acquire the signal, and the measurements are then performed on SignalVu-PC-SVE
• SignalVu (option SVE ) coupled with option SV26 also add P25 measurements on Tektronix windows oscilloscopes