Hitachi CP-CX251N User manual

1
Projector
CP-CX251N
User's Manual (detailed)
Operating Guide – Technical
Supported signals for COMPUTER IN
Resolution (H x V) Signal mode H. frequency
(kHz)
V. frequency
(Hz)
Rating
720 x 400 TEXT 37.9 85 VESA
640 x 480 VGA (60Hz) 31.5 59.9 VESA
VGA (72Hz) 37.9 72.8 VESA
VGA (75Hz) 37.5 75 VESA
VGA (85Hz) 43.3 85 VESA
800 x 600 SVGA (56Hz) 35.2 56.3 VESA
SVGA (60Hz) 37.9 60.3 VESA
SVGA (72Hz) 48.1 72.2 VESA
SVGA (75Hz) 46.9 75 VESA
SVGA (85Hz) 53.7 85.1 VESA
832 x 624 Mac 16” mode 49.7 74.5
1024 x 768 XGA (60Hz) 48.4 60 VESA
XGA (70Hz) 56.5 70.1 VESA
XGA (75Hz) 60 75 VESA
XGA (85Hz) 68.7 85 VESA
1152 x 864 1152 x 864 (75Hz) 67.5 75 VESA
1280 x 768 W-XGA (60Hz) 47.7 60 VESA
1280 x 800 1280 x 800 (60Hz) 49.7 60 VESA
1280 x 1024 SXGA (60Hz) 64 60 VESA
SXGA (75Hz) 80 75 VESA
SXGA (85Hz) 91.1 85 VESA
1366 x 768 WXGA (60Hz) 47.7 59.8 VESA
1440 x 900 WXGA+ (60Hz) 55.9 59.9 VESA
1600 x 900 WXGA++ (60Hz) 60 60 VESA
1400 x 1050 SXGA+ (60Hz) 65.2 60 VESA
1600 x 1200 UXGA (60Hz) 75 60 VESA
1920 x 1080 Full HD (60Hz) 67.5 60 VESA
NOTE
• Be sure to check jack type, signal level, timing and resolution before connecting this
projector to a PC.
• Some PCs may have multiple display screen modes. Use of some of these modes will not be possible with
this projector.
• Depending on the input signal, full-size display may not be possible in some cases. Refer to the number of
display pixels above.
• The signal will be converted to the projector’s panel resolution before being displayed. The best display
performance will be achieved if the resolutions of the input signal and projector panel are identical.
• Automatic adjustment may not function correctly with some input signals.
• The image may not be displayed correctly when the input sync signal is a composite sync or a sync on G.
•
The illustrations in this manual are for illustrative purposes. They may differ slightly from your projector.

2
Supported signals for HDMI
Resolution (H x V) Signal mode H. frequency
(kHz)
V. frequency
(Hz)
Rating
720 x 400 TEXT 37.9 85 VESA
640 x 480 VGA (60Hz) 31.5 59.9 VESA
VGA (72Hz) 37.9 72.8 VESA
VGA (75Hz) 37.5 75 VESA
VGA (85Hz) 43.3 85 VESA
800 x 600 SVGA (56Hz) 35.2 56.3 VESA
SVGA (60Hz) 37.9 60.3 VESA
SVGA (72Hz) 48.1 72.2 VESA
SVGA (75Hz) 46.9 75 VESA
SVGA (85Hz) 53.7 85.1 VESA
832 x 624 Mac 16” mode 49.7 74.5
1024 x 768 XGA (60Hz) 48.4 60 VESA
XGA (70Hz) 56.5 70.1 VESA
XGA (75Hz) 60 75 VESA
XGA (85Hz) 68.7 85 VESA
1152 x 864 1152 x 864 (75Hz) 67.5 75 VESA
1280 x 768 W-XGA (60Hz) 47.7 60 VESA
1280 x 800 1280 x 800 (60Hz) 49.7 60 VESA
1280 x 1024 SXGA (60Hz) 64 60 VESA
SXGA (75Hz) 80 75 VESA
SXGA (85Hz) 91.1 85 VESA
1366 x 768 WXGA (60Hz) 47.7 59.8 VESA
1440 x 900 WXGA+ (60Hz) 55.9 59.9 VESA
1600 x 900 WXGA++ (60Hz) 60 60 VESA
1400 x 1050 SXGA+ (60Hz) 65.2 60 VESA
1680 x 1050 WSXGA+ (60Hz) 65.3 60 VESA
1600 x 1200 UXGA (60Hz) 75 60 VESA
720(1440) x 480i 480i 15.7 60 CEA
720(1440) x 576i 576i 15.6 50 CEA
720 x 480p 480p 31.5 60 CEA
720 x 576p 576p 31.3 50 CEA
1280 x 720p 720p (50Hz) 37.5 50 CEA
720p (60Hz) 45 60 CEA
1920 x 1080i 1080i (50Hz) 28.1 50 CEA
1080i (60Hz) 33.8 60 CEA
1920 x 1080p 1080p (50Hz) 56.3 50 CEA
1080p (60Hz) 67.5 60 CEA
Supported signals

3
Connection to the ports
Connection to the ports
NOTICE ►
Use the cables with straight plugs, not L-shaped ones, as the input
ports of the projector are recessed.
►Only the signal that is input from the COMPUTER IN1 can be output
from the MONITOR OUT port.
BA
ACOMPUTER IN1, BCOMPUTER IN2 /MONITOR OUT
D-sub 15pin mini shrink jack
(1) for PC signal
• Video signal: RGB separate, Analog, 0.7Vp-p, 75Ω terminated (positive)
• H/V. sync. Signal: TTL level (positive/negative)
• Composite sync. Signal: TTL level
Pin Signal Pin Signal
1Video Red 10 Ground
2 Video Green 11 (No connection)
3Video Blue 12 A
: SDA (DDC data)
B
: (No connection)
4 (No connection)
5 Ground 13 H. sync / Composite sync.
6 Ground Red 14 V. sync.
7 Ground Green 15 A
: SCL (DDC clock)
B
: (No connection)
8Ground Blue
9 (No connection) - -


 
(2) for Component signal
• Y: Component video Y with composite sync, 1.0±0.1 Vp-p, 75 Ω terminator
• Cr/Pr: Component video Cr/Pr, 0.7±0.1 Vp-p, 75 Ω terminator
• Cb/Pb: Component video Cb/Pb, 0.7±0.1 Vp-p, 75 Ω terminator
System: 480i@60,480p@60,576i@50,576p@50,720p@50/60,1080i@50/60,1080p@50/60
Pin Signal Pin Signal
1Cr/Pr 9 (No connection)
2Y10 Ground
3Cb/Pb 11 (No connection)
4 (No connection) 12 (No connection)
5 Ground 13 (No connection)
6 Ground Cr/Pr 14 (No connection)
7 Ground Y15 (No connection)
8 Ground Cb/Pb - -

4
Connection to the ports (continued)
CS-VIDEO
Mini DIN 4pin jack
• System: NTSC, PAL, SECAM, PAL-M, PAL-N, NTSC4.43, PAL(60Hz)
Pin Signal
1Color 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
3 Ground
4 Ground
43
2
1
DVIDEO
RCA jack
• System: NTSC, PAL, SECAM, PAL-M, PAL-N, NTSC4.43, PAL(60Hz)
• 1.0±0.1Vp-p, 75Ω terminator
C
D

5
Connection to the ports (continued)
AUDIO IN
F
R,
G
L
RCA jack x2
• 47kΩ terminator
EHDMI
• Type :Digital audio/video connector
• Audio signal : Linear PCM (Sampling rate; 32/44.1/48 kHz)
Pin Signal Pin Signal Pin Signal
1 T.M.D.S. Data2 + 8 T.M.D.S. Data0 Shield 15 SCL
2T.M.D.S. Data2 Shield 9 T.M.D.S. Data0 - 16 SDA
3 T.M.D.S. Data2 - 10 T.M.D.S. Clock + 17 DDC/CEC Ground
4 T.M.D.S. Data1 + 11 T.M.D.S. Clock Shield
18 +5V Power
5T.M.D.S. Data1 Shield 12 T.M.D.S. Clock - 19 Hot Plug Detect
6 T.M.D.S. Data1 - 13 CEC
7 T.M.D.S. Data0 + 14 Reserved(N.C. on device)
10 12 14 16 182468
911131517191357
F
E
G
\
H
I
AUDIO OUT
H
R, IL
RCA jack x2
• 1kΩ output impedance

6
Connection to the ports (continued)
J
USB TYPE B
USB B type jack
Pin Signal
1 +5V
2 - Data
3+ Data
4Ground
43
21
K
CONTROL
D-sub 9pin plug
• About the details of RS-232C communication,
please refer to the section "RS-232C Communication".
Pin Signal Pin Signal Pin Signal
1 (No connection) 4 (No connection) 7 RTS
2 RD 5 Ground 8 CTS
3 TD 6 (No connection) 9 (No connection)
9
5 4 3 2 1
6
7
8
J
K
L
LAN
RJ-45 jack 87654
3
21
Pin Signal Pin Signal Pin Signal
1 TX+ 4 - 7 -
2 TX- 5 - 8 -
3RX+ 6 RX-
L

7
Connection to the ports (continued)
To input component video signal to COMPUTER IN ports
ex.
To input component video signal to the COMPUTER IN1 or IN2 port of the projector,
use a RCA to D-sub cable or adapter.
For the pin description of the required cable or adapter, refer to the descriptions about
COMPUTER IN1 and IN2 port (&3).
Y CB/PBCR/PR
COMPONENT VIDEO OUT
RCA plugs
D-sub plug
VCR/DVD/Blu-ray
Disc player
RCA connectors

8
RS-232C Communication
RS-232C Communication
When the projector connects to the computer by RS-232C communication,
the projector can be controlled with RS-232C commands from the computer.
For details of RS-232C commands, refer to RS-232C Communication / Network
command table (&17).
Connection
1. Turn off the projector and the computer.
2. Connect the projector's CONTROL port and the computer's RS-232C port
with a RS-232C cable (cross). Use the cable that ful lls the speci cation
shown in  gure.
3. Turn the computer on, and after the computer has started up turn the projector
on.
4. Set the COMMUNICATION TYPE to OFF (&OPTION menu - SERVICE -
COMMUNICATION in the User's Manual - Operating Guide).
(cross)
RS-232C Cable
RS-232C CONTROL
CD (1) (1) -
RD(2) (2) RD
TD (3) (3) TD
DTR (4) (4)
-
GND (5) (5) GND
DSR (6) (6)
-
RTS (7) (7) RTS
DTS (8) (8) CTS
RI (9) (9)
-
CONTROL port
of the projector
RS-232C port
of the computer
9
5 4 3 2 1
6
7
8



1
2
43
8
9
5
7 6

9
RS-232C Communication (continued)
Communication settings
1. Protocol
19200bps,8N1
2. Command format ("h" shows hexadecimal)
Byte Number 0 1 2 3 4 5 6 7 8 9 10 11 12
Command
Action
Header Data
Header
code
Packet
Data
size
CRC
ag Action Type Setting code
LHLHLHLHLHLH
<SET> Change setting to
desired value [(cL)(cH)]
by [(bL)(bH)].
BEh EFh 03h 06h 00h
(aL) (aH) 01h 00h (bL) (bH) (cL) (cH)
<GET> Read projector
internal setup value [(bL)
(bH)] .
(aL) (aH) 02h 00h (bL) (bH) 00h 00h
<INCREMENT>
Increment setup value
[(bL)(bH)] by 1.
(aL) (aH) 04h 00h (bL) (bH) 00h 00h
<DECREMENT>
Decrement setup value
[(bL)(bH)] by 1.
(aL) (aH) 05h 00h (bL) (bH) 00h 00h
<EXECUTE> Run
a command [(bL)(bH)].
(aL) (aH) 06h 00h (bL) (bH) 00h 00h
[Header code] [Packet] [Data size]
Set [BEh, EFh, 03h, 06h, 00h] to byte number 0
~ 4.
[CRC ag]
For byte number 5, 6, refer to RS-232C Communication / Network command
table (&17).
[Action]
Set functional code to byte number 7, 8.
<SET> = [01h, 00h], <GET> = [02h, 00h], <INCREMENT> = [04h, 00h]
<DECREMENT> = [05h, 00h], <EXECUTE> = [06h, 00h]
Refer to the Communication command table (&above).
[Type] [Setting code]
For byte number 9 ～ 12 , refer to RS-232C Communication / Network command
table (&17).

10
RS-232C Communication (continued)
3. Response code / Error code ("h" shows hexadecimal)
(1) ACK reply: 06h
When the projector receives the Set, Increment, Decrement or Execute
command correctly, the projector changes the setting data for the specied
item by [Type], and it returns the code.
(2) NAK reply: 15h
When the projector cannot understand the received command, the projector
returns the error code.
In such a case, check the sending code and send the same command again.
(3) Error reply: 1Ch + 0000h
When the projector cannot execute the received command for any reasons,
the projector returns the error code.
In such a case, check the sending code and the setting status of the projector.
(4) Data reply: 1Dh + xxxxh
When the projector receives the GET command correctly, the projector returns
the responce code and 2 bytes of data.
NOTE •
For connecting the projector to your devices, please read the manual
for each devices, and connect them correctly with suitable cables.
• Operation cannot be guaranteed when the projector receives an undened
command or data.
• Provide an interval of at least 40ms between the response code and any other
code.
• The projector outputs test data when the power supply is switched ON, and
when the lamp is lit. Ignore this data.
• Commands are not accepted during warm-up.
• When the data length is greater than indicated by the data length code,
the projector ignore the excess data code. Conversely when the data length is
shorter than indicated by the data length code, the projector returns the error
code to the computer.