GSP-830 User Manual 144 DEMODULATOR The optional FM/AM Demodulator (Opt.07) is a factory installed item which recovers AM or FM modulated baseband signal. The demodulated signal can be output from the rear panel 3.5mm mini-phone jack. Activate demodulation Panel operation 1. Press the Option key. Option 2. Press F2 (Demod). Demod...F 2 3. Select Frequency Modulation or Amplitude Modulation by pressing F1 (FM On) or F2 (AM On). FMOn OffF 1AMOn OffF 2 Activate phone output Panel operation 1. Press F2 (Demod). Demod...F 2 2. Press F3 (SPK On). The rear panel phone output becomes active. SPKOn OffF 3 Specification • 3.5mm stereo headphone jack wired for mono • Maximum 0.5W output into 8Ω load • Frequency range: 30Hz to 50kHz Note Either FM or AM must be turned on before activating the phone output.