Hitachi CP-X935E Procedure of getting the Projector status, Example of command error

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Connection to the control signal terminal (continued)

The procedure of getting the Projector status

(1)Computer sends the command '20H'+'yyH' to Projector. (2)Projector reply the command '1xH'+'yyH'+data bytes.

The procedure of setting the Projector status

(1)Computer sends the command '3xH'+'yyH'+data bytes. (2)Projector changes it’s status.

(3)Projector reply the command '1xH'+'yyH'+data bytes which indicate status.

Caution

∙ (3) data bytes is not always same as (1) data bytes. If projector cannot realize the status of (1)

data bytes, projector set the proper status and reply this new setting data bytes or projector

 

 

reply the error reply '0xH'+'yyH'+data bytes same as (1).

∙When only power control (POWER COMMAND) is performed, it takes about 2~140 seconds between sending set code and receiving answering code.

The procedure of default setting the Projector status

(1)Computer sends the command '40H'+'yyH' (2)Projector changes it's status to default setting.

(3)Projector reply the command '1xH'+'yyH'+data bytes which indicate default.

The example of command error

When projector cannot accept command from PC, error code '00H'+'yyH' is sent back.

(in a case when command code '2xH', '3xH' or '4xH'+'yyH'+data is sent from PC to projector)

The example of data error

When projector cannot accept command from PC, error code with data '00H'+'yyH'+data is sent back as it is. (in a case when command code '2xH', '3xH' or '4xH'+'yyH'+data is sent from PC to projector)

When data is longer than required data code length, projector ignores excess data code.

When data is shorter than required data code length, projector sends back error code shown above.

The example of framing error

Projector sends error code '70H'+'70H' up to 10 times at intervals of 1 second until any answer is received.

The interval of command bytes and data bytes

After command code '2xH', '3xH' or '4xH' is sent from PC, if command or data is not sent within 500ms, projector sends back error command '70H'+70H'. If no answer is sent within 1 second from that time, framing error is assumed.

Caution

∙ The interval of command bytes and data bytes must be over 1mS and under 500mS. If it is

under 1mS, it may be treat as framing error.

 

∙After projector has sent back answer code, when next command is to be sent from PC, allow for an interval of 40ms or more between answer code and other code.

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Contents Outline FeaturesContents Operating GuideFor the Customers in U.K Before use Video signal cablesPower cord Instructions to UsersDo not use power supplies other Than that specified Do not look directly at the lens when Lamp is litDo not install this unit in an unstable place If any abnormality occursHandle the power cord carefully Be careful in handling the power cordCleaning Do not step on this unit or do not put a Heavy object on itDo not place this unit where it gets hot When you are not going to use For a long timeClean inside the unit at least once two years VolumeContents of shipping box Names and functions of each partRGB/VIDEO Remote control transmitter Disk PADNames and functions of each part Laser ApertureHow to use foot adjusters InstallationExample of the projector and screen installation To project the picture ∙ The on indicator will light up orangeBasic operations For 3 secondsStandby mode To turn off the powerIndicator lights up orange PLUG&PLAYFreeze Function Magnifying FunctionMemory function Adjustments and functionsTo return to the initial setting ∙ On-screen menus are displayed on the screenManual Operation SET UPHow to use the SET UP menu Input Auto-adjustmentDuring AUTO-adjustment Auto Confirm ScreenBlank ImageOPT RevealConnection to the video signal terminals Connection to the RGB signal terminalText Example of computer signalResolution Standard Display Dots KHz Computer/signal Vertical Timing lines Initial set signalsComputer/signal Horizontal Timing µs Horizontal Timing µsConnection to the control signal terminal Control signal terminal Serial mouse PS/2 mouse ADB Mac mouse Communication Control command tableControl command table RS232C cable ReferenceVideo System Auto AdjustControl data table Color BalanceProcedure of default setting the Projector status Procedure of getting the Projector statusProcedure of setting the Projector status Example of command errorAC Inlet Computer Note type Example of system setupConnecting various equipment ComputerDesk typeCleaning the air filter Air filterLamp How to replace lampRemove the lamp cover Option lamp Lamp unit CP-X935W/E DT00201Message ActionMessage table Blink in the following casesAudio Dimension diagramVideo Batteries LR6
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