NEC LCD Monitor Manual page 57

EXT1: Extension1
'0'-'0'(30h,30h): (On this monitor, it is always '00')
EXT2: Extension 2
'0'-'0'(30h,30h): (On this monitor, it is always '00')
EXT3: Extension 3
'0'-'0'(30h,30h): (On this monitor, it is always '00')
EXT4: Extension 4
'0'-'0'(30h,30h): (On this monitor, it is always '00')
EXT5: Extension 5
'0'-'0'(30h,30h): (On this monitor, it is always '00')
EXT6: Extension 6
'0'-'0'(30h,30h): (On this monitor, it is always '00')
EXT7: Extension 7
'0'-'0'(30h,30h): (On this monitor, it is always '00')
ETX (03h): End of Message
Check code
BCC: Block Check Code
Refer to the section 4.5 "Check code" for a BCC calculation.
Delimiter
CR (0Dh): End of packet
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