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5.5.2 Get Timing Report and Timing reply.
The controller requests the monitor to report the displayed image timing.
Send "07"(30h, 37h) as Get Timing Report command.
Complete "Get Timing Report" command packet as follows;
ASCII: 01h-30h-41h-30h-41h-30h-34h-02h-30h-37h-03h-CHK-0Dh
SOH-'0'-'A'-'0'-'A'-'0'-'4'-STX-'0'-'7'-ETX-CHK- CR
The monitor replies status as the following format;
SS: Timing status byte
Bit 7 = 1: Sync Frequency is out of range.
Bit 6 = 1: Unstable count
Bit 5-2 Reserved (Don't care)
Bit 1
1:Positive Horizontal sync polarity.
0:Negative Horizontal sync polarity.
Bit 0
1:Positive Vertical sync polarity.
0:Negative Vertical sync polarity.
H Freq: Horizontal Frequency in unit 0.01kHz
V Freq: Vertical Frequency in unit 0.01Hz
Ex.) When H Freq is '1''2''A''9' (31h, 32h, 41h, 39h), it means 47.77kHz.
Command code
STX
'0'
'7'
ETX
Command
SS
H Freq.
V Freq.
STX
'4'
'E'
Hi
Lo
MSB
LSB
MSB
LSB
ETX
Содержание V423
Страница 12: ...12 72 4 4 Delimiter Packet delimiter code ASCII CR 0Dh Header Message Check code Delimiter...
Страница 37: ...37 72 CR 0Dh End of packet...
Страница 39: ...39 72 Delimiter CR 0Dh End of packet...
Страница 41: ...41 72 Delimiter CR 0Dh End of packet...
Страница 43: ...43 72 CR 0Dh End of packet...
Страница 48: ...48 72 Delimiter CR 0Dh End of packet...
Страница 59: ...59 72 Delimiter CR 0Dh End of packet...