a) Connect the equipment as illustrated.b) Set the test receiver to measure peak positive deviation. Set the audio bandwidth for ≤0.25 Hz to ≥15,000 Hz. Turn the de-emphasis function off.c) Adjust the transmitter per the manufacturer's procedure for full rated system deviation with the subaudible signaling enabled.d) Apply standard test modulation.e) Set the test receiver to measure rms deviation. Set the audio bandwidth for 300 Hz to 3000 Hz. Set the 750 microsecond de-emphasis function to on.f) Adjust distortion meter one for the CTCSS modulation frequency if testing a CTCSS system or to 67.2 Hz for a CDCSS system.g) Record the voltage reading from distortion meter two as REFTOTAL .h) Remove the modulation input signal (the audio input terminals shall remain terminated with the dummy microphone circuit specified by the manufacturer)and record the voltage level from distortion meter two as REFNOISE .