Hitachi Cp X256 Projector Technical Manual


Projector
CP-X256/CP-X265
User's Manual – Operating Guide
Technical
Example of computer signal
Resolution (H x V)H. frequency (kHz)V. frequency (Hz)RatingSignal mode
720 x 40037.985.0VESATEXT
640 x 4803.559.9VESAVGA (60Hz)
640 x 48037.972.8VESAVGA (72Hz)
640 x 48037.575.0VESAVGA (75Hz)
640 x 48043.385.0VESAVGA (85Hz)
800 x 60035.256.3VESASVGA (56Hz)
800 x 60037.960.3VESASVGA (60Hz)
800 x 60048.72.2VESASVGA (72Hz)
800 x 60046.975.0VESASVGA (75Hz)
800 x 60053.785.VESASVGA (85Hz)...

2

Example of  computer signal
Initial set signals
The  following  signals  are  used  for  the  initial  settings.  The  signal  timing  of  some 
computer  models  may  be  different.  In  such  case,  adjust  the  items  V  POSITION 
and H POSITION in the IMAGE menu. 
 Back porch (B) Front porch (D)  Back porch (b) Front porch (d)
	
Display	interval 	(C)	
Display	interval 	(c)
Data  Data
H. Sync.  V. Sync.
                  Sync (A)   Sync (a)
Computer/Signal
Horizontal signal timing...

3

Connection to the ports
ARGB IN1, BRGB IN2, CRGB OUT
 D-sub 5pin mini shrink jack
•  Video  signal:  RGB  separate, Analog,  0.7Vp-p, 
75Ω terminated (positive)
• H/V. sync. Signal: TTL level (positive/negative)
• Composite sync. Signal: TTL level
   At RGB signal           
PinSignal
Video Red
2Video Green
3Video Blue
4(No connection)
5Ground
6Ground Red
7Ground Green
8Ground Blue
9(No connection)
0
Ground
(No connection)
2
A: SDA (DDC data), B/C : (No connection)...

4

Connection to the ports
432
HVIDEO
RCA jack
• System: NTSC, PAL, SECAM, PAL-M, PAL-N, NTSC4.43
• 1.0±0.1Vp-p, 75Ω terminator
GS-VIDEO
Mini DIN 4pin jack
PinSignal
Color signal 0.286Vp-p (NTSC, burst), 75Ω terminator
Color signal 0.300Vp-p (PAL/SECAM, burst) 75Ω terminator
2Brightness signal, 1.0Vp-p, 75Ω terminator
3Ground
4Ground
COMPONENT VIDEO DY, ECB/PB, FCR/PR
RCA jack x3
• System: 525i(480i), 525p(480p), 625i(576i), 750p(720p), 25i(080i)
PortSignal
YComponent video Y,...

5

Connection to the ports
LAN
Y R
L
AUDIO IN3
AUDIO IN1AUDIO OUT
USB
RGB OUT
AUDIO IN2
VIDEO
S-VIDEO
CB/PB
CR/PRCONTROL
RGB IN2RGB IN1
K
IAUDIO IN-1 (Ø3.5 stereo mini jack), JAUDIO IN-2,KLAUDIO 3 L/R (RCA jack)
• 200mVrms(max.) 35kΩ termination
MAUDIO OUT (Ø3.5 stereo mini jack)
• 200mVrms(max.) 1kΩ output impedance
NUSB
USB B type jack
OCONTROL
D-sub 9pin plug
• About the details of RS-232C communication, please refer to the followin\
g page.
PinSignalPinSignalPinSignal
(No connection)4(No...

6

Connection to the ports
LAN
Y R
L
AUDIO IN3
AUDIO IN1AUDIO OUT
USB
RGB OUT
AUDIO IN2
VIDEO
S-VIDEO
CB/PB
CR/PRCONTROL
RGB IN2RGB IN1
K
PLAN
RJ-45 jack
P
PinSignalPinSignalPinSignal
TX+4-7-
2TX-5-8-
3RX+6RX-
8765432 

7

RS-232C Communication (continued)
RS-232C Communication
67892345     67892345 
 CONTROL port  RS-232C cable (Cross)  RS-232C port 
  of the projector   of the computer
 - () () CD 
  RD (2) (2) RD 
  TD (3) (3) TD 
  - (4) (4) DTR 
  GND (5) (5) GND 
  - (6) (6) DSR 
  RTS (7) (7) RTS 
  CTS (8) (8) DTS 
  - (9) (9) RI
 
Connecting the cable
. Turn off the projector and the computer. 
2. C o n n e c t   t h e   C O N T R O L  p o r t   o f   t h e   p r o j e c t o r   w i t...

8

Requesting projector status (Get command)
( ) Send the request code Header + Command data (‘02H’+‘00H’+ type (2 bytes)+
‘00H’ +‘00H’) from the computer to the projector.
(2) The projector returns the response code ‘ DH’+ data (2 bytes) to the computer.
Changing the projector settings (Set command)
() Send the setting code Header + Command data (‘0H’+‘00H’+ type (2 bytes) + 
setting code (2 bytes)) from the computer to the projector. 
(2) The projector changes the setting based on...

9

RS-232C Communication (continued)
Names	Operation	TypeHeader Command	DataCRCActionType
Setting	Code
PowerSet Turn	off BE		EF0306		00 2A		D3 01		00 00		60 00		00
Turn	on BE		EF
0306		00 BA		D2 01		00 00		60 01		00
Get BE		EF0306		00 19		D3 02		0000		60 00		00
(Example	return)
	
	 00		00	 01		00	 02		00	
	 (Off)	 (On)	 (Cool	down)
Input	Source
Set RGB	IN	1 BE		EF0306		00 FE		D2 01		0000		20 00		00
RGB	IN	2 BE		EF
0306		00 3E		D0 01		0000		20 04		00
VIDEO BE		EF0306		00 6E		D3 01		0000		20 01		00...

0

Names	Operation	TypeHeader Command	DataCRCActionType
Setting	Code
User	Gamma	PatternSetOff BE		EF0306		00 FB		FA 01		0080		30 00		00
9	step	gray	scale BE		EF
0306		00 6B		FB 01		0080		30 01		00
15	steps	gray	scale BE		EF
0306		00 9B		FB 01		0080		30 02		00
Ramp BE		EF0306		00 0B		FA 01		0080		30 03		00
Get BE		EF0306		00 C8		FA 02		0080		30 00		00
User	Gamma	Point	1
Get BE		EF0306		00 08		FE 02		0090		30 00		00
Increment BE		EF0306		00 6E		FE 04		0090		30 00		00
Decrement BE		EF0306		00 BF		FF...