NEC NP-P554W RS232 codes- Projectors - Page 26
Setting Value Upper ranking 8 bits
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DATA03 : 00H (direct settings) 01H (increment/decrement) DATA04 : lower data (8bit) DATA05 : upper data (8bit) ex.1) volume direct setting (value = 20) DATA01 : 05H (Volume) DATA02 : 00H ("Volume" only) DATA03 : 00H (direct setting) DATA04 : 14H (lower data : 20 = 0014) DATA05 : 00H (upper data : 20 = 0014) ex.2) brightness increment (value = +1) DATA01 : 00H (Brightness) DATA02 : FFH (except "Volume") DATA03 : 01H (increment/decrement) DATA04 : 01H (lower data : +1 = 0001) DATA05 : 00H (upper data : +1 = 0001) ex.3) contrast decrement (value = -1) DATA01 : 01H (Contrast) DATA02 : FFH (except "Volume") DATA03 : 01H (increment/decrement) DATA04 : FFH (lower data : -1 = FFFF) DATA05 : FFH (upper data : -1 = FFFF) 030-2. VOLUME ADJUST Function: This command sets the volume. Command: 03H 10H 00H 00H 05H DATA01 .. DATA05 CKS (*3) Data Portion Contents DATA01 05H fixed DATA02 Setting items 00H : Volume 01H : Bass 02H : Treble 03H : Balance DATA03 Setting mode 00H : Absolute value specification 01H : Relative value specification DATA04 DATA05 Setting Value (Lower ranking 8 bits) Setting Value (Upper ranking 8 bits) Response: At the time of a success 23H 10H 01H xxH 02H DATA01 DATA02 CKS (*1) (*2) (*3) Data Portion Contents