Canon LV-7490 Brochure

LV-7490    Basic Serial Command Specifications   

                                                                                     

   

8 

 6.1.1  PC issues a command in format as below. 

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. 

 

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. 

 

Switch the projector to video mode with Basic Command. 

 

 

 

 

            Command

 

PC → Projector           “C”  “0”  “7”    CR 

Projector → 

PC 

                                  

ACK

   

CR

 

 

 

 

 

 

                          Processing

 

 

 

 

 

 

 

       

(A few ms  ～ 5s)