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Projector
8755J/8919H/8920H
User's Manual (detailed)
Operating Guide – Technical
Example of PC signal
Resolution (H x V) H. frequency (kHz) V. frequency (Hz)
720 x 400
640 x 480
640 x 480
640 x 480
640 x 480
800 x 600
800 x 600
800 x 600
800 x 600
800 x 600
832 x 624
1024 x 768
1024 x 768
1024 x 768
1024 x 768
1152 x 864
1280 x 768
1280 x 800
1280 x 960
1280 x 1024
1280 x 1024
1280 x 1024
1400 x 1050
1600 x 1200
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.
• Although the projector can display signals with resolution up to UXGA
(1600x1200), 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.
37.9
31.5
37.9
37.5
43.3
35.2
37.9
48.1
46.9
53.7
49.7
48.4
56.5
60.0
68.7
67.5
47.7
49.7
60.0
64.0
80.0
91.1
65.2
75.0
Rating
85.0
VESA
59.9
VESA
72.8
VESA
75.0
VESA
85.0
VESA
56.3
VESA
60.3
VESA
72.2
VESA
75.0
VESA
85.1
VESA
74.5
60.0
VESA
70.1
VESA
75.0
VESA
85.0
VESA
75.0
VESA
60.0
VESA
60.0
VESA
60.0
VESA
60.0
VESA
75.0
VESA
85.0
VESA
60.0
VESA
60.0
VESA
Signal mode
TEXT
VGA (60Hz)
VGA (72Hz)
VGA (75Hz)
VGA (85Hz)
SVGA (56Hz)
SVGA (60Hz)
SVGA (72Hz)
SVGA (75Hz)
SVGA (85Hz)
Mac 16" mode
XGA (60Hz)
XGA (70Hz)
XGA (75Hz)
XGA (85Hz)
1152 x 864 (75Hz)
W-XGA (60Hz)
1280 x 800 (60Hz)
1280 x 960 (60Hz)
SXGA (60Hz)
SXGA (75Hz)
SXGA (85Hz)
SXGA+ (60Hz)
UXGA (60Hz)
1
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Summary of Contents for Hitachi 8755J
- Page 1 Projector 8755J/8919H/8920H User's Manual (detailed) Operating Guide – Technical Example of PC signal Resolution (H x V) H. frequency (kHz) V. frequency (Hz) Rating Signal mode 37.9 85.0 VESA TEXT 720 x 400 640 x 480 31.5 59.9 VESA VGA (60Hz) 640 x 480 37.9...
- Page 2 Initial set signals Initial set signals The following signals are used for the initial settings. The signal timing of some PC models may be different. In such case, adjust the items V POSITION and H POSITION in IMAGE menu. Back porch (B) Front porch (D) Back porch (b) Front porch (d)
- Page 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. COMPUTER IN1, COMPUTER IN2, MONITOR OUT D-sub 15pin mini shrink jack • Video signal: RGB separate, Analog, 0.7Vp-p, 75Ω...
- Page 4 Connection to the ports (continued) COMPONENT Cb/Pb Cr/Pr RCA jack x3 • System: 480i@60, 480p@60, 576i@50, 720p@50/60, 1080i@50/60 Port Signal Component video Y, 1.0±0.1Vp-p, 75Ω terminator with composite sync Cb/Pb Component video Cb/Pb, 0.7±0.1Vp-p, 75Ω terminator Cr/Pr Component video Cr/Pr, 0.7±0.1Vp-p, 75Ω terminator S-VIDEO Mini DIN 4pin jack Signal...
- Page 5 Connection to the ports (continued) AUDIO IN1, AUDIO IN2 Ø3.5 stereo mini jack • 200 mVrms 47kΩ terminator AUDIO IN3 RCA jack x2 • 200 mVrms 47kΩ terminator AUDIO OUT RCA jack x2 • 200 mVrms 1kΩ output impedance To input SCART RGB signal; ex.: SCART connector (jack)
- Page 6 Connection to the ports (continued) USB B type jack Signal - Data + Data Ground CONTROL D-sub 9pin plug • About the details of RS-232C communication, please refer to the following page. Signal Signal Signal (No connection) (No connection) Ground (No connection) (No connection)
- Page 7 RS-232C Communication RS-232C Communication CONTROL port RS-232C cable (cross) RS-232C port of the projector of the computer - (1) (1) 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)
- Page 8 RS-232C Communication (continued) Requesting projector status (Get command) (1) Send the following request code from the PC to the projector. Header + Command data (‘02H’ + ‘00H’ + type (2 bytes) + ‘00H’ + ‘00H’) (2) The projector returns the response code ‘1DH’ + data (2 bytes) to the PC. Changing the projector settings (Set command) (1) Send the following setting code from the PC to the projector.
- Page 9 RS-232C Communication command table RS-232C Communication command table Command Data Names Operation Type Header Action Type Setting Code Power Turn off BE EF 06 00 2A D3 01 00 00 60 00 00 Turn on BE EF 06 00 BA D2 01 00 00 60 01 00...
- Page 10 RS-232C Communication command table (continued) Command Data Names Operation Type Header Action Type Setting Code GAMMA 1 DEFAULT BE EF 06 00 07 E9 01 00 A1 30 20 00 1 CUSTOM BE EF 06 00 07 FD 01 00 A1 30 10 00 2 DEFAULT...
- Page 11 RS-232C Communication command table (continued) Command Data Names Operation Type Header Action Type Setting Code User Gamma Point 8 BE EF 06 00 7C FF 02 00 97 30 00 00 Increment BE EF 06 00 1A FF 04 00 97 30 00 00 Decrement...
- Page 12 RS-232C Communication command table (continued) Command Data Names Operation Type Header Action Type Setting Code COLOR BE EF 06 00 B5 72 02 00 02 22 00 00 Increment BE EF 06 00 D3 72 04 00 02 22 00 00 Decrement BE EF 06 00...
- Page 13 RS-232C Communication command table (continued) Command Data Names Operation Type Header Action Type Setting Code H SIZE BE EF 06 00 B5 82 02 00 02 21 00 00 Increment BE EF 06 00 D3 82 04 00 02 21 00 00 Decrement BE EF...
- Page 14 RS-232C Communication command table (continued) Command Data Names Operation Type Header Action Type Setting Code FRAME LOCK – BE EF 06 00 3B C2 01 00 50 30 00 00 COMPUTER1 BE EF 06 00 AB C3 01 00 50 30 01 00 BE EF 06 00...
- Page 15 RS-232C Communication command table (continued) Command Data Names Operation Type Header Action Type Setting Code VOLUME - BE EF 06 00 FD CD 02 00 64 20 00 00 COMPUTER2 Increment BE EF 06 00 9B CD 04 00 64 20 00 00 Decrement BE EF...
- Page 16 RS-232C Communication command table (continued) Command Data Names Operation Type Header Action Type Setting Code AUDIO OUT STANDBY Set AUDIO IN1 BE EF 06 00 7A DF 01 00 3F 20 01 00 AUDIO IN2 BE EF 06 00 8A DF 01 00 3F 20 02 00...
- Page 17 RS-232C Communication command table (continued) Command Data Names Operation Type Header Action Type Setting Code BLANK MyScreen BE EF 06 00 FB CA 01 00 00 30 20 00 ORIGINAL BE EF 06 00 FB E2 01 00 00 30 40 00 BLUE BE EF...
- Page 18 RS-232C Communication command table (continued) Command Data Names Operation Type Header Action Type Setting Code AUTO OFF BE EF 06 00 08 86 02 00 10 31 00 00 Increment BE EF 06 00 6E 86 04 00 10 31 00 00 Decrement BE EF...