NEC Mt830 Lcd Projector Users Manual

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PC Control Command Reference
Command Codes
No. Function Code Data Description
01 Video 03H No Same as remote
02 RGB1 04H No Same as remote
03 RGB2 05H No Same as remote
04 S-VIDEO C6H No Same as remote
05 PC CARD 27H No Same as remote (available only when the Viewer board is installed)
06 Power  On 08H No Same as remote (See NOTE on page 104.)
07 Power  Off 14H No Same as remote
08 Picture  Mute 47H No Same as remote
09 Onscreen  Mute 11H No
10 Power  Zoom  W  09H No Same as remote
11 Power  Zoom  T 0AH No Same as remote
12 Power  Focus  + 0BH No Same as remote
13 Power  Focus  Ð 0CH No Same as remote
14 Reset 43H No (Resets immediately after returning ACK)
15 Freeze 4CH No Same as remote
16 Slide + 4BH No Same as remote (available only whenPC CARD is selected)
17 Slide - 20H No Same as remote (available only whenPC CARD is selected)
18 Front Floor 33H No
19 Front Ceiling 34H No
20 Rear Floor 35H No
21 Rear Ceiling 36H No
22 Auto Start  On 19H No
23 Auto Start  Off 1AH No
24 Image mode Select 1EH Yes 0 to 2 at Video, 3 to 5 at the others
25
Power  Management  On15H No
26
Power  Management  Off16H No
SPECIFICATIONS
99
100 
						

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Command Codes (continued)
No. Function Code Data Description
27 Brightness 60H Yes 0 to 63
28 Contrast 62H Yes 0 to 63
29 Color 64H Yes 0 to 63
30 Tint 66H Yes -32 to +31(E0 to 1F)
31 Sharpness 68H Yes 0 to 3
32 Audio Volume 6AH Yes 0 to 63
33 Picture Adj 70H Yes*
768 to 1279 (2 byte code)
34 Fine Picture 6EH Yes 0 to 31
35 H Position 72H Yes -64 to +63 (C0 to 3F)
36 V Position 74H Yes -32 to +31 (E0 to 1F)
37 Lamp Reset 3FH No
38 Language Select 3DH Yes 00:English, 01:German, 02:French, 03:Italian, 04:Spanish, 05:Swedish
SPECIFICATIONS
101
102 39 White Balance
  Sub Brightness R 75 Yes 0 to 7FH
G 76 Yes 0 to 7FH
B 77 Yes 0 to 7FH
  Sub Contrast R 78 Yes 0 to 7FH
G 79 Yes 0 to 7FH
B 7A Yes 0 to 7FH
40 Pointer Select 7F Yes 0 to 7
41 Video System 61 Yes 0 to 2 (available only when VIDEO is selected)
These commands are subject to change without notice.
*(Low-order data) (High-order data) CSUM
CSUM = Checksum is a low-order digit of the sum from the Code to the immediately preceding data. 
						

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44 Err 04: Parameter Error ( parameter data abnormal)
1 2 54 36
7 8
To RxD of PC©PC Control Connector (DIN-8P)
Cable Connection
Communication Protocol
Baud rate: 9600 bps
Data length: 8 bits
Parity: No parity
Stop bit: One bit
X on/off: None
CommunicationsFull duplex
procedure:
If the CPU of the LCD projector has received the data correctly, it returns an ACK(C5H). If the received data is not correct, the CPU returns a
NAK(CAH), then the following status:
Receiving success: C5
Receiving failure: CA Err
Err 01: Command Error (command not supported)
Err 02: Checksum Error
Err 03: Busy (command not acceptable)
NOTE:  If failing in powering-on, the CPU returns the following NAKs:
CA Err 1
Err 1 8X (Apply the corresponding bit.)
Bit 0: Either filter panel or lamp cover is not attached correctly
Bit 1: Fan stoppage
Bit 2: Overheated
Bit 3: Lamp lighting failure
To TxD of PC§To GND of PC©
SPECIFICATIONS
103
104