... indicator - Composite video output - Software upgrade via RS-232 serial port, STB to STB - Forcible PAL/ NTSC conversion - Standby with low ... Audio Output Level0±6dBu Channel decoding Channel WaveformQPSK FEC1/2, 2/3, 3/4, 5/6,7/8 Automatic ... ,11CH. RCA Output4RCA(cvbs,audio_l,audio_r,RFoutput)RS232 Serial PortSIP2.0_4P, outside RS232 converter board for upgrade softwareRCU CategoryIR(Carrier 38KHz) ...