... version, on-line user etc.VideoVideo Input4/8/16 channel, BNC, 1.0Vp-p, 75?, looping(optional)Video Output2 channel ... TV output, BNC, 1.0Vp- p, 75?, 1 VGA output, matrix ... display zoneAudioAudio Input4 channel, BNC, 200-2800mV, 30KΩBidirectional Talk Input1 channel, BNC, 200-2800mV, 30KΩAudio Output1 channel, BNC, 200-3000mv, 5KΩAudio CompressionG. ...