The P25 Analyzer option provides a method to verify the operation of APCO Project 25 (P25) and Linear Simulcast Modulation (LSM) tower, mobile, and portable radio transmitters. Option 521 includes the ability to display constellations, spectrum, histogram, and eye diagram graphs. In addition, a summary graph displays numeric values of received power, frequency error, modulation fidelity (Mod Fid), bit error rate (BER), symbol deviation, Network Access Code (NAC), symbol rate error of the input signal and control channel Signal-to-Interference-plus Noise Ratio (SINR). BER comparisons can be made to the Standard Tone or the Standard Transmitter Test (O.153) pattern, regular voice traffic using a proprietary algorithm, or a Message Error Rate (MER) can be computed using the control channel messages CRC checking. In addition, estimated BER on the control channel uses a proprietary algorithm.
The LMR Master will analyze input signal strengths from +33 dBm (2.0 watts) down to levels approaching the sensitivity of P25 radios, with the ability to automatically adjust the input sensitivity based on input levels.