NEC VT695 Control Commands page 19

DATA05 : 00H (upper data : +1 = 0001<Hex>)
ex.3) contrast decrement (value = -1)
DATA01 : 01H (Contrast)
DATA02 : FFH (except "Volume")
DATA03 : 01H (increment/decrement)
DATA04 : FFH (lower data : -1 = FFFF<Hex>)
DATA05 : FFH (upper data : -1 = FFFF<Hex>)
030-2. VOLUME ADJUST
**********************************************************************
Function:
This command sets the volume.
Command:
03H 10H 00H 00H 05H DATA01 .. DATA05 CKS
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 Setting Value (Lower ranking 8 bits)
DATA05 Setting Value (Upper ranking 8 bits)
Response: At the time of a success
23H 10H 01H xxH 02H DATA01 DATA02 CKS
(*1) (*2)
Data Portion Contents
-------------------------------------------------------------------
DATA01 .. 02 Results
0000H : Normal
0000H Other : Error
Response: At the time of a failure
A3H 10H 01H xxH 02H DATA01 DATA02 CKS
(*1) (*2)
Command example:
* Setting Volume to "10"
03H 10H 00H 00H 05H 05H 00H 00H 0AH 00H 27H
030-12. IMAGE MODE ADJUST
**********************************************************************
(*3)
(*3)
(*4) (*3)