HP ep7100 manual Connecting to a room controller, Serial connections

Page 48

Installing permanently

Connecting to a room controller

If your projector has a serial port, you can connect the projector to a room controller using a serial (RS-232) cable. After you program the room controller using the following commands, you can use the room controller to operate the projector and other components of your home theater.

Serial connections

The serial port on the projector uses a standard serial (RS-232) cable:

■Pin 2: data sent to the projector (RxD)

■Pin 3: data sent from the projector (TxD)

■Pin 5: ground

The room controller must use the following serial (RS-232) settings:

■9600 baud

■1 start bit + 8 data bits (D0=LSB, D7=MSB) + 1 stop bit

■No parity

■Full duplex communication channels (no flow control)

■No handshaking

Examples of room controller commands

In the following examples, “<CR>” and “<LF>” represent a carriage return and line feed, respectively.

Commands are sent to the projector as "requests" which consist of an asterisk (*) prefix, the command name, any needed parameter, and a carriage return <CR> as

aterminator:

*command = parameter <CR>

Requests can contain only ASCII alphanumeric characters. Blanks (spaces) are allowed, except within keywords and numbers. Line feeds <LF> are ignored.

48	User’s Guide

Image 48

Contents HP ep7100 Series Home Cinema Digital Projector First Edition July Contents Showing video Index Contents Setting up Safety precautionsWhat’s in the box? Identifying the contents of the box Identifying common features Projector at a glanceIdentifying major components Projector buttons and lights Identifying the projector buttons and lightsBack panel Identifying back panel componentsRemote control Accessories Identifying features of the remote controlSetting up the projector Planning your layoutSetting up Image size diagonal Image size width Distance lens to screen Connecting power Connecting a video source Connecting a component-video source Connecting an S-video source Connecting a composite-video source Connecting a DVI source Connecting a Scart source Connecting a sound system Connecting several video sources Connecting a computer Turning the projector on and off Turning the projector onTurning the projector off Moving the projectorMaking basic adjustments Selecting a sourceAiming the projector Adjusting the focus and zoom Changing the picture mode Press menu and go to Picture Customize picture modeAdjusting the shape of the picture Adjusting a slanted picture Adjusting the volumeShowing video Showing the video sourceHiding or showing the picture Showing a computer screenShowing video Adjusting the projector Adjusting the picture and soundAdjusting the picture Adjusting the soundUsing the on-screen menu Adjusting the projector setupChanging settings using the on-screen menu Input menu Picture menuInput menu Picture menuSource or each viewing environment. You can also Setup menu Sound menuHelp menu Adjusting the projector Cleaning the projector lens Maintaining the projectorGetting the projector status Replacing the lamp module Replacing the lamp module requires special consideration Replacing the battery in the remote control Maintaining the projector Installing permanently Installing the projectorInstalling on a table Installing on the ceilingConnecting to a room controller Examples of room controller commandsSerial connections Request *BRT=65CR Room controller commands NotificationCspc Hide Lhrs Shdn Menu Installing permanently Fixing problems Troubleshooting suggestionsIf the red temperature light is on or blinking If both red warning lights are blinkingStart-up problems Picture problemsIf the image is out of focus If an upside-down or reversed image is displayedIf the image is too small or too large If the image has slanted sidesIf the image is stretched If the projected colors seem slightly wrongIf the projected colors seem completely wrong Sound problems If a computer display is projected with low resolutionIf the image disappears from the computer screen If no sound is coming out of the projectorInterruption problems Remote control problemsTesting the projector Press menu and go to Help DiagnosticsFixing problems Support and warranty SupportContacting HP support Americas Limited warranty HP digital projector limited warranty statementExtent of limited warranty Obtaining HP repairLimitations of warranty Limitations of liabilityLocal law Support and warranty Specifications Projector specificationsReference Operating Video mode compatibility Compatibility Resolution Refresh rates Hz AnalogSafety information LED safetyMercury safety Regulatory informationCanada Japan KoreaConnections to peripheral devices International Declaration of conformity Reference Index Index Index Index Page 5990-3663