Canon LV-7490 Brochure

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LV-7490  Expand Serial Command Functional Specifications 
                                                                                   
                                                     
73  
 
 
9.12.6  CR_TEMP Command 
Command "CR_TEMP”[CR] 
Details 
Get current temperature inside a projector. 
If there are several sensors installed, it is possible to get information from all the 
sensors at once. 
Response 
Acceptable “000_%1_%2_%3”[CR] 
%1,%2,%3 
%1= Sensor 1 temperature (Outside temperature) 
%2= Sensor 2 temperature (Inside temperature1) 
%3= Sensor 3 temperature (Inside temperature2) 
 
%1,%2 are consists of 6 bites fixed 
There must be 1 space between %1 and %2, and, %2 and %3 
 
e.g. _31.5F 
 
“_” means a space and “_” changes into “-“, when temperature 
gets below freezing. 
 
e.g. -05.5F 
 
The last character shows if corresponding sensor is under 
abnormal temperature. 
 
“F” ------- Abnormal temperature   
“W”-------Close to abnormal temperature(Temperature is as high  
to display Warning) 
“S” -------Not close to abnormal temperature (Temperature is low 
enough and safe.) 
“N”-------Applicable sensor does not detect abnormal temperature 
“E” -------Not able to return temperature data 
 
 
When several sensors are incorporated, projector returns values 
continuously. 
e.g. “_31.5F__35.2S__38.0W”[CR] 
 
A data of sensor 1 comes first and a data of sensor 2 follows after   
1 space. 
 
As described respectively in e.g., sensor 1 detects abnormal 
temp., sensor 2 detects 35.2 degrees which means safety, and 
sensor 3 is 38 degrees which is close to abnormal temp. 
In case projector cannot return its data due to some hard ware 
failure, the last character becomes “E” such as “_00.0E”. 
 
Some of the projectors get abnormal temperature because of 
heat of Lamp ballast in Standby mode or Powering ON. 
Therefore detection of abnormal temperature is suspended while 
Standby mode or adequate time after Power ON, and during that 
time projector returns “_----N” as a temperature data. 
Unacceptable “Error 
Code”[CR]