Xxx is input gain level. Xxx = 000,001,002. 11. Get output gain level setc11g00 retc31g3xxx xxx is input gain level. Xxx = 000,001,002. 12 get panel lock state setc01l0 retc11l2x x is panel lock state. 0: lock 1: un-lock. 13 rs232 control code no support. Retcx! X is no support command..