NJR-T04HD / NJR-R04HD User’s Guide7510.6.5 Test toneSince test tone can be output only to specific speakers, you can check the positions and connections of thespeakers. You can also set test tone level and frequency.Setting forNJR-T04HD: N/ANJR-R04HD: Test tone ON / OFF can be set only for each HDMI output connector individually.Setting valueTest tone ON / OFF:OFF [Default]ONTest tone level:-20 dBFS [Default]±0 dBFSFrequency HIGH:400 Hz1 kHz [Default]Frequency LOW:30 Hz80 Hz [Default]Test tone ON / OFF and frequency for each audio channel:OFFLOWHIGH[Default]: CH1:HIGH, CH2:HIGH, CH3:LOW, CH4:HIGH,CH5:HIGH, CH6:HIGH, CH7:HIGH, CH8:HIGHCommunication command@SAT Setting test tone output@GAT Getting test tone output@SAC Setting test tone level / frequency@GAC Getting test tone level / frequencyNJR-T04HD / NJR-R04HD