To select a character (A to Z, a to z, 0 to 9, space, ... c (MACRO 3) Press SOURCE/RECEIVER repeatedly to select ... m (*3) m (*3) m (*3) m (*4). Digital audio.
https://europe.yamaha.com/files/download/other_assets/1/329611/RX-A3030_RX-A2030_om_UCRABGLF_En.pdf