LV-8235 UST - Professional projector CANON - Free user manual and instructions

Product type	Professional ultra-short throw projector
Brand	Canon
Model	LV-8235 UST
Display technology	LCD (estimated)
Native resolution	WXGA (1280x800) (estimated)
Brightness	3000 lumens (estimated)
Contrast ratio	2000:1 (estimated)
Keystone correction	Vertical (via remote commands)
Video inputs	HDMI, VGA (Computer 1 & 2), S-Video, Composite
Audio input	Not specified (likely 3.5 mm jack)
Control port	RS-232C (D-Sub 9-pin)
Lamp life	Approx. 3000 hours (estimated)
Power consumption	Approx. 300 W (estimated)
Power supply	Mains 100-240 V AC, 50/60 Hz
Dimensions (W x D x H)	Approx. 300 x 300 x 100 mm (estimated)
Weight	Approx. 5 kg (estimated)
Main functions	Remote power on/off, input selection, volume control, digital zoom, keystone correction, image modes, standby, power management, presentation timer
Maintenance and cleaning	Clean the air filter and lens regularly with a soft cloth. Replace the lamp after the indicated lifetime.
Safety	Do not obstruct ventilation openings. Avoid extreme temperatures and humidity. Disconnect before any maintenance.
Spare parts and repairability	Replacement lamp available. For any repairs, contact an authorized technician.
General information	Projector designed for professional use, controlled via RS-232C. The manual details remote control commands.

Frequently Asked Questions - LV-8235 UST CANON

How to turn on the projector remotely via RS-232?

Send the command C00 followed by a carriage return (CR). The projector responds with ACK if the command is accepted.

How to quickly turn off the projector?

Use the command C01 (Quick Power OFF). This command turns off immediately without confirmation.

How to read the lamp operating hours?

Send the command CR3. The projector returns a 5-digit number indicating cumulative hours (e.g., '00410' for 410 hours).

What are the available video inputs?

The projector has: HDMI, Computer 1 (VGA/SCART/Component), Computer 2, Video (Composite) and S-Video.

How to select the HDMI input?

Send the command C04. The projector switches to the HDMI input.

How to adjust brightness?

Use the commands C20 (increase) and C21 (decrease). Each command changes brightness by one step.

How to enable audio mute?

To mute audio, send C0B. To unmute, send C0C.

How to freeze the image?

Use command C43 to freeze the image (FREEZE ON) and C44 to cancel (FREEZE OFF).

How to correct keystone distortion?

Send C8E to reduce the top of the image (top keystone) and C8F to reduce the bottom (bottom keystone).

How to read the current projector status?

The command CR0 returns a code indicating the status: e.g., '00' for on, '80' for standby, '20' for cooling.

USER MANUAL LV-8235 UST CANON

MULTIMEDIA PROJECTOR

LV-8235 UST

BASIC SERIAL

COMMAND SPECIFICATIONS

Revision 1

Table of Contents

1. Overview.... 1
2. Serial Interface Specifications .... 2

2.1. Transfer Specifications ...... 2
2.2. Connection 2

1. Notes for Communication .... 3
2. Functional Execution Command Table .... 4

3. Status Read Command Table ...... 6

4. Functional Execution Command .... 7

6.1. Format....7
6.2. Command Pipelining ....7
6.3. Transfer Example 7
6.4. Operation Requirements 8
6.5. POWER ON Command....9
6.6. POWER OFF Command (Quick Power OFF) 9
6.7. POWER OFF Command 9
6.8. HDMI Command....9
6.9. Computer 1 Command....9
6.10. Computer 2 Command....10
6.11. Video Command....10
6.12. VOLUME + Command....10
6.13. VOLUME – Command.... 10
6.14. AUDIO MUTE ON Command....10
6.15. AUDIO MUTE OFF Command 11
6.16. VIDEO MUTE ON Command 11
6.17. VIDEO MUTE OFF Command 11
6.18. Screen Normal size Command.... 11
6.19. Screen Full size Command 11
6.20. Image Standard Command.... 11
6.21. Image Real Command 12
6.22. Image Cinema Command 12
6.23. Image1 Command....12
6.24. Image2 Command....12
6.25. Image3 Command....12
6.26. Image4 Command....12
6.27. Image Dynamic Command....12
6.28. MENU ON Command....13
6.29. MENU OFF Command 13
6.30. DISPLAY CLEAR Command 13
6.31. BRIGHTNESS + Command 13
6.32. BRIGHTNESS – Command....13
6.33. IMAGE (Toggle) Command 14
6.34. Direct on Setting Command 14
6.35. Direct on Cancel Command 14
6.36. Power Management Ready Command 14
6.37. Power Management OFF Command....14
6.38. Power Management Shut down Command....14
6.39. D.ZOOM + Command 15
6.40. D.ZOOM – Command 15

6.41. S-Video Command 15
6.42. POINTER RIGHT Command....15
6.43. POINTER LEFT Command 15
6.44. POINTER UP Command....15
6.45. POINTER DOWN Command....16
6.46. ENTER Command....16
6.47. FREEZE ON Command 16
6.48. FREEZE OFF Command 16
6.49. ZOOM- Command....16
6.50. ZOOM+ Command....16
6.51. Computer 1 Analog RGB Command ....17
6.52. Computer 1 RGB (SCART) Command....17
6.53. Computer 1 Component Command....17
6.54. AUTO PC ADJ. Command 17
6.55. PRESENTATION TIMER Command 17
6.56. KEYSTONE ↑Command....17
6.57. KEYSTONE ↓Command....18

7. Status Read Command.... 19

7.1. Format....19
7.2. Transfer Example 19
7.3. Operation Requirements ...... 19
7.4. Status Read Command 20
7.5. Input Mode Read Command 22
7.6. Lamp Time Read Command....22
7.7. Setting Read Command 22
7.8. Temp Read Command 22
7.9. Lamp Mode Read Command 23

Overview

1.1. These specifications define projector control commands for LV-8235 UST.
1.2. The projector control commands are used to remotely control a projector through RS-232C from a computer.

Serial Interface Specifications

2.1. Transfer Specifications

Item	Specifications
Synchronous system	Asynchronous
Transmission Speed	9600 / 19200
Data Length	8 bit
Parity	N/A
Stop Bit	1
Flow Control	N/A

1) Transmission speed: initial setting value is 19200.
2) Transmission speed can be changed in service mode.

2.2. Connection

Dedicated serial cable must be used for connection to a computer and a projector.

Notes for Communication

1. The projector control command is defined as one command/one line that starts with "C" and ends with carriage return (0x0D).
2. There are two types of Commands: Functional Execution Commands and Status Read Commands.

Example of Functional Execution Command: "C05" [CR]

Example of Status Read Command: "CR0" [CR]

1. When it takes more than one second to receive one command, it does not operate.

The information of buffer is cleared when it takes more than one second to receive carriage return (0x0D) after the projector receives the first data "C".

1. For Command pipelining, wait for the interval of 100ms after receiving a response.

graph LR
    A["PC → Projector"] --> B["C"]
    B --> C["0"]
    C --> D["7"]
    D --> E["CR"]
    E --> F["Response"]
    F --> G["ACK"]
    G --> H["CR"]
    H --> I["Next Command"]
    style A fill:#f9f,stroke:#333
    style I fill:#bbf,stroke:#333
    note right of F "More than 100ms"
    note right of G "5s"
    note left of F "A few ms"
    note right of G "5s"
    note right of H "5s"
    note right of I "Next Command"

4.1. When a command is issued before receiving a response, the function is not executed properly.
4.2. Except for when there is no Response for more than 5 seconds.

1. It takes about 5 seconds for internal initialization after plugging in AC power. During this time, it cannot process commands. Do not issue any command.
2. The number of characters of response to Status Read Commands depends on commands. Please see [7. Status Read Commands].
3. Characters for commands must be Capital (A - Z).

Functional Execution Command Table

Command	Item	Command	Item
C00	POWER ON	C20	BRIGHTNESS +
C01	POWER OFF(Quick Power OFF)	C21	BRIGHTNESS -
C02	POWER OFF	C22	———
C03	———	C23	———
C04	HDMI	C24	———
C05	Computer 1	C25	———
C06	Computer 2	C26	———
C07	Video	C27	IMAGE (Toggle)
C08	———	C28	Direct on Enable
C09	VOLUME +	C29	Direct on Disable
C0A	VOLUME -	C2A	Power Management Ready
C0B	AUDIO MUTE ON	C2B	Power Management OFF
C0C	AUDIO MUTE OFF	C2C	———
C0D	VIDEO MUTE ON	C2D	———
C0E	VIDEO MUTE OFF	C2E	Power Management Shut down
C0F	Screen Normal size (4 3)	C2F	———
C10	Screen Full size	C30	D.ZOOM +
C11	Image Standard	C31	D.ZOOM -
C12	Image Real	C32	———
C13	Image Cinema	C33	———
C14	Image 1	C34	S-video
C15	Image 2	C35	———
C16	Image 3	C36	———
C17	Image 4	C37	———
C18	———	C38	———
C19	Image Dynamic	C39	———
C1A	———	C3A	POINTER RIGHT
C1B	———	C3B	POINTER LEFT
C1C	MENU ON	C3C	POINTER UP
C1D	MENU OFF	C3D	POINTER DOWN
C1E	DISPLAY CLEAR	C3E	———
C1F	———	C3F	ENTER

——— means no function.

—— means no function.

Status Read Command Table

Command	Item	Memo
CR0	Status Read
CR1	Input Mode Read
CR2	———
CR3	(Corresponding) Lamp Time Read
CR4	Setting Read
CR5	———
CR6	Temp Read
CR7	Lamp Mode Read

—— means no function.

Functional Execution Command

6.1. Format

6.1.1 PC issues a command in format as below.

"C" COMMAND [CR]

Command: two characters (See Basic Functional Execution Command Table)

A projector changes received data to decode and returns a result after being ready to receive next command.

[ACK][CR] (0x06 0x0D) When received Functional Execution Commands.

6.1.2 “?” [CR] When the received data cannot be decoded.

6.2. Command Pipelining

When some functions need the command pipelining, the performance is the same as that of the remote control;

6.2.1. System: issues any command every 100 ms.
6.2.2. When receiving the appropriate command, the function is executed for 120 ms from the moment.
6.2.3. When receiving the same command continuously within 120 ms, the function is executed for another 120 ms from the moment.
6.2.4. When there is no incoming command after 120 ms, the execution of pipelining is stopped.
6.2.5. When the projector receives other incoming commands within 120ms, the execution of pipelining is stopped.

6.3. Transfer Example

Switch the projector to video mode with Basic Command.

graph LR
    A["PC → Projector"] --> B["C"]
    B --> C["0"]
    C --> D["7"]
    D --> E["CR"]
    E --> F["Processing (A few ms 5s)"]
    F --> G["ACK CR"]

6.4. Operation Requirements

1) When the projector's status is any of below, Functional Execution Commands are limited.

Projector Status	Available Functional Execution Commands
In standby status	C00 POWER ON
Countdown in process	C00 POWER ON → Countdown is terminatedC01 POWER OFFC02 POWER OFF → Countdown is terminated
Cooling Down in process	NONE (No Execution)
Cooling Down due to Abnormal Temperature	NONE (No Execution)
Abnormal Temperature Status	NONE (No Execution)
Abnormal Power Status	NONE (No Execution)
Power Save / Cooling Down in process	NONE (No Execution)
Power Save Status	C00 POWER ONC01 POWER OFF
Auto input On1/On2 setting	Although transmit Input source commands, Auto input does no operate.

Note) When the status is as above, even if the projector receives other commands, it returns [ACK] [CR].

2) Functional Execution Commands are invalid when Eco mode is selected in Standby mode of Setting menu and projector is in standby.

6.5. POWER ON Command

Command	“C00” [CR]
Detail	Power ONWhen already Power is ON, nothing is done.When sending this command during processing Countdown, Countdown is terminated.
Response	Acceptable	[ACK] [CR]
	Unacceptable	“ ”[CR]

6.6. POWER OFF Command (Quick Power OFF)

Command	“C01” [CR]
Detail	Power OFF (Standby)When Power is OFF with POWER button of the projector and the remote control, “Power OFF?” is displayed. However, as soon as this command is sent, Quick Power OFF is executed.
Response	Acceptable	[ACK] [CR]
	Unacceptable	“ ”[CR]

6.7. POWER OFF Command

Command	“C02” [CR]
Detail	Power OFF (Standby).The command operates the same Power OFF function as POWER button of the projector and the remote control.Once this command is sent, “Power OFF?” is displayed. If this command is sent again while it is displayed, Power OFF is executed.When sending this command during Countdown, Countdown is terminated.
Response	Acceptable	[ACK] [CR]
	Unacceptable	“ ”[CR]

6.8. HDMI Command

Command	“C04” [CR]
Detail	Select HDMI InputAlthough projector returns “OK”, Auto input is not executed with this command while Auto input is set to On1/On2.
Response	Acceptable	[ACK] [CR]
	Unacceptable	“ ”[CR]

6.9. Computer 1 Command

Command	“C05” [CR]
Detail	Select Computer 1 InputAlthough projector returns “OK”, Auto input is not executed with this command while Auto input is set to On1/On2.
Response	Acceptable	[ACK] [CR]
	Unacceptable	“ ”[CR]

6.10. Computer 2 Command

Command	“C06” [CR]
Detail	Select Computer2 InputAlthough projector returns “OK”, Auto input is not executed with this command while Auto input is set to On1/On2.Note) When “Monitor out” is selected in Terminal menu, projector returns “OK” and displays “Monitor out” on the screen by receiving this command.
Response	Acceptable	[ACK] [CR]
	Unacceptable	“ ”[CR]

6.11. Video Command

Command	“C07” [CR]
Detail	Select Video InputAlthough projector returns “OK”, Auto input is not executed with this command while Auto input is set to On1/On2.
Response	Acceptable	[ACK] [CR]
	Unacceptable	“ ”[CR]

6.12. VOLUME + Command

Command	“C09” [CR]
Detail	Volume Up.This command operates the same way as “VOLUME+” button of the projector and the remote control.
Response	Acceptable	[ACK] [CR]
	Unacceptable	“ ”[CR]

6.13. VOLUME – Command

Command	“C0A” [CR]
Detail	Volume DownThis command operates the same way as “VOLUME-” button of the projector and the remote control.
Response	Acceptable	[ACK] [CR]
	Unacceptable	“ ”[CR]

6.14. AUDIO MUTE ON Command

Command	“C0B” [CR]
Detail	Sound Mute ON.This command works the same as “MUTE” button of the remote control for Mute ON, but does not work for Mute OFF.
Response	Acceptable	[ACK] [CR]
	Unacceptable	“ ”[CR]

6.15. AUDIO MUTE OFF Command

Command	“C0C” [CR]
Detail	Sound Mute OFF.This command works the same as “MUTE” button of the remote control for Mute OFF, but does not work for Mute ON.
Response	Acceptable	[ACK] [CR]
	Unacceptable	“ ”[CR]

6.16. VIDEO MUTE ON Command

Command	“C0D”[CR]
Detail	Video Mute ON.This command works the same as “BLANK” button of the remote control for Blank ON, but does not work for Blank OFF.
Response	Acceptable	[ACK] [CR]
	Unacceptable	“ ”[CR]

6.17. VIDEO MUTE OFF Command

Command	“C0E” [CR]
Detail	Video Mute OFF.This command works the same as “BLANK” button of remote control for Blank, but does not work for Blank.
Response	Acceptable	[ACK] [CR]
	Unacceptable	“ ”[CR]

6.18. Screen Normal size Command

Command	“C0F” [CR]
Detail	Set Aspect mode to Normal.This command is invalid while D.Zoom is in operation.
Response	Acceptable	[ACK] [CR]
	Unacceptable	“ ”[CR]

6.19. Screen Full size Command

Command	“C10” [CR]
Detail	Set Aspect mode to Full.This command is valid though D.Zoom is in operation.
Response	Acceptable	[ACK] [CR]
	Unacceptable	“ ”[CR]

6.20. Image Standard Command

Command	“C11” [CR]
Detail	Set image to Standard mode.
Response	Acceptable	[ACK] [CR]
	Unacceptable	“ ”[CR]

6.21. Image Real Command

Command	“C12” [CR]
Detail	Set image to High contrast mode.
Response	Acceptable	[ACK] [CR]
	Unacceptable	“ ”[CR]

6.22. Image Cinema Command

Command	“C13” [CR]
Detail	Set image to Cinema mode.
Response	Acceptable	[ACK] [CR]
	Unacceptable	“ ”[CR]

6.23. Image1 Command

Command	“C14” [CR]
Detail	Set image to User 1 mode.
Response	Acceptable	[ACK] [CR]
	Unacceptable	“ ”[CR]

6.24. Image2 Command

Command	“C15” [CR]
Detail	Set image to User 2 mode.
Response	Acceptable	[ACK] [CR]
	Unacceptable	“ ”[CR]

6.25. Image3 Command

Command	“C16” [CR]
Detail	Set image to User 3 mode.
Response	Acceptable	[ACK] [CR]
	Unacceptable	“ ”[CR]

6.26. Image4 Command

Command	“C17” [CR]
Detail	Set image to User 4 mode.
Response	Acceptable	[ACK] [CR]
	Unacceptable	“ ”[CR]

6.27. Image Dynamic Command

Command	“C19” [CR]
Detail	Set image to Presentation mode.
Response	Acceptable	[ACK] [CR]
	Unacceptable	“ ”[CR]

6.28. MENU ON Command

Command	“C1C” [CR]
Detail	Display On-Screen Display Menu.
Response	Acceptable	[ACK] [CR]
	Unacceptable	“ ”[CR]

6.29. MENU OFF Command

Command	“C1D” [CR]
Detail	Hide On-Screen Display Menu.
Response	Acceptable	[ACK] [CR]
	Unacceptable	“ ”[CR]

6.30. DISPLAY CLEAR Command

Command	“C1E” [CR]
Detail	Hide On-Screen Display.Hide On-Screen Display unconditionally.
Response	Acceptable	[ACK] [CR]
	Unacceptable	“ ”[CR]

6.31. BRIGHTNESS + Command

Command	“C20” [CR]
Detail	Brightness of User Control +1.
Response	Acceptable	[ACK] [CR]
	Unacceptable	“ ”[CR]

6.32. BRIGHTNESS – Command

Command	“C21” [CR]
Detail	Brightness of User Control –1.
Response	Acceptable	[ACK] [CR]
	Unacceptable	“ ”[CR]

6.33. IMAGE (Toggle) Command

Command	“C27”[CR]
Detail	Switch Image Setting status.This command works the same as “IMAGE” button of the remote control.
Response	Acceptable	[ACK] [CR]
	Unacceptable	“ ”[CR]

6.34. Direct on Setting Command

Command	“C28” [CR]
Detail	Enable Direct power on.This status is stored in EEPROM and retained regardless of Power OFF/ON.
Response	Acceptable	[ACK] [CR]
	Unacceptable	“ ”[CR]

6.35. Direct on Cancel Command

Command	“C29” [CR]
Detail	Disable Direct power on.This status is stored in EEPROM and retained regardless of Power OFF/ON.
Response	Acceptable	[ACK] [CR]
	Unacceptable	“ ”[CR]

6.36. Power Management Ready Command

Command	“C2A” [CR]
Detail	Set Power Management mode to Standby mode.This status is stored in EEPROM and retained regardless of Power ON/OFF.
Response	Acceptable	[ACK] [CR]
	Unacceptable	“ ”[CR]

6.37. Power Management OFF Command

Command	“C2B” [CR]
Detail	Set Power Management mode to OFF mode.This status is stored in EEPROM and retained regardless of Power ON/OFF.
Response	Acceptable	[ACK] [CR]
	Unacceptable	“ ”[CR]

6.38. Power Management Shut down Command

Command	“C2E” [CR]
Detail	Set Power Management mode to Exit mode.This status is stored in EEPROM and retained regardless of Power OFF/ON.
Response	Acceptable	[ACK] [CR]
	Unacceptable	“ ”[CR]

6.39. D.ZOOM + Command

Command	“C30” [CR]
Detail	Enter Digital Zoom mode and expand image size.This command works the same as “D.ZOOM ▲” button of the remote control.
Response	Acceptable	[ACK] [CR]
	Unacceptable	“ ”[CR]

6.40. D.ZOOM - Command

Command	“C31” [CR]
Detail	Enter Digital Zoom mode and reduce image size.This command works the same as “D.ZOOM ▼” button of the remote control.
Response	Acceptable	[ACK] [CR]
	Unacceptable	“ ”[CR]

6.41. S-Video Command

Command	“C34” [CR]
Detail	Select S-Video input.Although projector returns “OK”, Auto input is not executed with this command while Auto input is set to On1/On2.
Response	Acceptable	[ACK] [CR]
	Unacceptable	“ ”[CR]

6.42. POINTER RIGHT Command

Command	“C3A” [CR]
Detail	Move the Pointer of On-Screen Display Menu to the right.This command works differently from the pointer “>” of the projector and the remote control, and has no function of Volume +.
Response	Acceptable	[ACK] [CR]
	Unacceptable	“ ”[CR]

6.43. POINTER LEFT Command

Command	“C3B” [CR]
Detail	Move the Pointer of On-Screen Display Menu to the left.This command works differently from the pointer “<” of the projector and the remote control, and has no function of Volume -.
Response	Acceptable	[ACK] [CR]
	Unacceptable	“ ”[CR]

6.44. POINTER UP Command

Command	“C3C” [CR]
Detail	Move up the Pointer of On-Screen Display Menu.This command works the same as the pointer “▲” of the projector and the remote control.
Response	Acceptable	[ACK] [CR]
	Unacceptable	“ ”[CR]

6.45. POINTER DOWN Command

Command	“C3D” [CR]
Detail	Move down the Pointer of On-Screen Display Menu.This command works the same as the pointer “▼” of the projector and the remote control.
Response	Acceptable	[ACK] [CR]
	Unacceptable	“ ”[CR]

6.46. ENTER Command

Command	“C3F” [CR]
Detail	This command works the same as “OK” button of the projector and the remote control.
Response	Acceptable	[ACK] [CR]
	Unacceptable	“ ”[CR]

6.47. FREEZE ON Command

Command	“C43” [CR]
Detail	Freeze on-screen image.This command works the same as “FREEZE” button of the remote control for Freeze ON, but does not work for Freeze OFF.
Response	Acceptable	[ACK] [CR]
	Unacceptable	“ ”[CR]

6.48. FREEZE OFF Command

Command	“C44” [CR]
Detail	Cancel Freeze mode.This command works the same as “FREEZE” button of the remote control for Freeze OFF, but does not work for Freeze ON.
Response	Acceptable	[ACK] [CR]
	Unacceptable	“ ”[CR]

6.49. ZOOM- Command

Command	“C46” [CR]
Detail	Reduce the image.This command works the same as “ZOOM-” button of the projector top panelNote) Zoom function is available only when On Screen Display is not shown.
Response	Acceptable	[ACK] [CR]
	Unacceptable	“ ”[CR]

6.50. ZOOM+ Command

Command	“C47” [CR]
Detail	Expand the image.This command works the same as “ZOOM+” button of the projector top panelNote) Zoom function is available only when On Screen Display is not shown.
Response	Acceptable	[ACK] [CR]
	Unacceptable	“ ”[CR]

6.51. Computer 1 Analog RGB Command

Command	“C50” [CR]
Detail	Select ANALOG PC in Computer 1 input.Although projector returns “OK”, Auto input is not executed with this command while Auto input is set to On1/On2.
Response	Acceptable	[ACK] [CR]
	Unacceptable	“ ”[CR]

6.52. Computer 1 RGB (SCART) Command

Command	“C51”[CR]
Detail	Select Scart input in Computer1.Although projector returns “OK”, Auto input is not executed with this command while Auto input is set to On1/On2.
Response	Acceptable	[ACK] [CR]
	Unacceptable	“ ”[CR]

6.53. Computer 1 Component Command

Command	“C54”[CR]
Detail	Select Component input in Computer1.Although projector returns “OK”, Auto input is not executed with this command while Auto input is set to On1/On2.
Response	Acceptable	[ACK] [CR]
	Unacceptable	“ ”[CR]

6.54. AUTO PC ADJ. Command

Command	“C89” [CR]
Detail	Execute Auto PC function.This command works the same as “AUTO PC” button of the remote control.Sending the command during Auto PC operation stops the operation. This is the same operation as “AUTO PC” button of the remote control.
Response	Acceptable	[ACK] [CR]
	Unacceptable	“ ”[CR]

6.55. PRESENTATION TIMER Command

Command	“C8A” [CR]
Detail	Execute Presentation Timer.This command works the same as “P-TIMER” button of the remote control.
Response	Acceptable	[ACK] [CR]
	Unacceptable	“ ”[CR]

6.56. KEYSTONE ↑Command

Command	“C8E” [CR]
Detail	Correct keystone distortion by reducing upper part of image.
Response	Acceptable	[ACK] [CR]
	Unacceptable	“ ”[CR]

6.57. KEYSTONE ↓Command

Command	“C8F” [CR]
Detail	Correct keystone distortion by reducing down part of image.
Response	Acceptable	[ACK] [CR]
	Unacceptable	“ ”[CR]

Status Read Command

7.1.Format

7.1.1. PC issues commands in format as below;

"CR" Command [CR]

Command 1 character(See Basic Status Read Command Table)

7.1.2. When a projector receives the appropriate command, it returns a character line as the required data.

Required Data [CR]

Required Data A character line(See Basic Status Read Command Table)

7.1.3. When the received data cannot be decoded, the projector returns “?” [CR].

7.2.Transfer Example

Get input mode for projector with basic commands

graph LR
    A["PC → Projector"] --> B["C"]
    B --> C["R"]
    C --> D["1"]
    D --> E["CR"]
    E --> F["1"]
    F --> G["CR"]
    G --> H["Processing (A few ms 1s)"]
    H --> I["Response"]

(Shows Computer 1 is selected)

7.3. Operation Requirements

Status read Commands are invalid when Eco mode is selected in Standby mode of Setting menu and projector is in standby.

7.4. Status Read Command

Command	“CR0” [CR]
Detail	Get the projector's operating status
Response	Acceptable	“%1” [CR]
	%1	"00" = Power ON"80" = Standby"40" = Countdown in process"20" = Cooling Down in process"10" = Power Failure"28" = Cooling Down in process due to Temperature Anomaly"88" = Coming back after Temperature Anomaly"24" = Power Save/Cooling Down in process"04" = Power Save"21" = Cooling Down is in process after Power off due to lamp failure"81" = Standby after Cooling Down due to lamp failure
	Unacceptable	“?” [CR]

[Details of Response]

"00" [CR]

Status: Power ON

Normal image is on the screen.

"80" [CR]

Status: Standby

When the status is Standby, Status Read Commands are always acceptable, but Functional Execution Commands are not acceptable except POWER ON Command.

"40" [CR]

Status: Countdown in process

When “Display” in Setting Menu is ON and POWER ON is executed, it starts Countdown.

When “Display” in Setting Menu is OFF, processing Countdown is not executed and the status quickly moves to Power ON.

"20" [CR]

Status: Cooling Down in process

When the status is Power ON, and POWER OFF Command ("C01" [CR]) is executed, it moves to Cooling Down status.

This status automatically moves to Standby after lamp turns off and the fan spin finishes after about 90 seconds. The fan spin time depends on a model.

This function is used to cool down the lamps and other optical parts and is quite important for projector's reliability.

During this time, Functional Execution Commands are invalid.

"10" [CR]

Status: Power Failure

When the power supply voltage inside the projector reaches abnormal status, the projector is automatically turned off. The projector returns “10” [CR], which shows it

moves to Power OFF status due to power failure. Fan also stops unlike Cooling Down status.

"28" [CR]

Status: Cooling Down in process due to Temperature Anomaly

When the inside temperature is out of the operating temperature, it automatically starts

Cooling Down. Response for this status is "28" [CR].

Even if the temperature decreases during this process, Cooling Down is executed.

"88" [CR]

Status: Coming back after temperature anomaly

When the status moves to Standby after Cooling Down due to temperature anomaly, it returns "88" [CR].

This shows that the status turns to Standby because of abnormal temperature.

This status maintains until next operation is done. When Power On is executed, the information of temperature anomaly is canceled and normal operation is executed.

"24" [CR]

Status: Processing Power Save / Cooling Down

Power management function in Setting menu works and the status goes to Power Save / Cooling Down.

During this time, Functional Execution Commands are invalid (not executed).

This status moves to Power Save at set hours after the operation of Cooling Down.

graph LR
    A["Status No signal"] --> B["Response "00""]
    B --> C["5 minutes with no signal"]
    C --> D["Power Save / Cooling Down"]
    D --> E["24"]
    E --> F["After about 90 sec."]
    F --> G["04"]

"04" [CR]

Status: Power Save

This shows that it moves to Power Save status by Power management function in Setting menu.

"21" [CR]

Status: Cooling Down in process after turned off due to lamp failure

When a projector is turned off because of lamp failure, it automatically starts Cooling

Down operation, in which the projector returns "21" [CR].

"81" [CR]

Status: Standby after Cooling Down due to lamp failure.

This value is returned when Cooling Down operation due to lamp failure has been completed and the status has been moved to Standby. The status is kept until the next operation starts.

7.5.Input Mode Read Command

Command	“CR1” [CR]
Detail	Get the selected Input No.
Response	Acceptable	“%1” [CR]
	%1	“1” = Computer 1 is selected“2” = Computer 2 is selected“3” = HDMI is selected“4” = Video is selected“5” = S-video is selected
	Unacceptable	“?” [CR]

7.6. Lamp Time Read Command

Command	“CR3” [CR]
Detail	Get the total lamp running hours (Not actual lamp used hour, but Eco mode corresponding value).
Response	Acceptable	“%1” [CR]
	%1	Shows the time period with 5 digits numbers.Example “00410”[CR] shows 410 hours
	Unacceptable	“?” [CR]

7.7. Setting Read Command

Command	“CR4” [CR]
Detail	Get screen setting status such as Ceiling / Rear.
Response	Acceptable	“%1” [CR]
	%1	“11”[CR] = Normal Screen Setting“10”[CR] = Picture is top/bottom reversed.(Status: Rear Ceiling ON)“01”[CR] = Picture is left/right reversed. (Status: Rear ON)“00”[CR] = Picture is top/bottom and left/right reversed.(Status: Ceiling ON)
	Unacceptable	“?” [CR]

7.8.Temp Read Command

Command	“CR6” [CR]
Detail	Get the temperature data inside the projector.With some temperature sensors installed in the projector, it is possible to get all the temperature at once.
Response	Acceptable	“%1_%2_%3” [CR]
	%1%2%3	%1 Temperature of sensor 1%2 Temperature of sensor 2%3 Temperature of sensor 3Temperature data is shown as “00.0”.When the temperature goes down to -, the first character becomes “-” instead of a space, like “-05.5” [CR].When no temperature data can be returned due to hardware problems, the first character becomes “E” like”E00.0” [CR].When several temperature sensors are equipped, Responses are returned continuously.“_31.5 _35.2 _33.4”[CR]The first data is sensor 1, then one space, and the data of sensor 2 follows.
	Unacceptable	“ ”[CR]

7.9. Lamp Mode Read Command

Command	“CR7” [CR]
Detail	Get lamp mode status.For 1 lamp projector, get if it is lighting or not.
Response	Acceptable	“%1” [CR]
	%1	“00” [CR]=Light is out.“01” [CR]=Light is on.
	Unacceptable	“ ”[CR]