Temperature Measurement Value Correction Table; Power Ic Vref Feed Control Output - Sharp MD-MS701H Service Manual

MD-MS701H/MS702H

[2] Temperature measurement value correction table

Ambient temperature
o o
+14 C ~ +16
+17 o C ~ +19 o
+20 o C ~ +22 o
o o
+23 C ~ +25
o o
+26 C ~ +27
o o
+28 C ~ +30
*Meaning of values
Temperature reference = Value to be predicted to be measured by the microcomputer at reference temperature
•
o
(+23.6 C)
Temperature correction = Value to convert to measurement value at reference temperature (+23.6¯C)
•
*Determining the temperature correction value
Temperature detection characteristics formula
•
Ambient temperature (
Hence, TEMP input AD value = (463 - Ambient temperature)/2.876
The reference temperature (+23.6
•
by '1', temperature is determined.
For temperature correction, the input AD value is +/- inverted.

[3] Power IC VREF feed control output

Test/R-ROM write power input
•
Ambient temperature
o o
-5 C ~ +9 C
o o
+6 C ~ +21 C
o o
+17 C ~ +32 C
o o
+29 C ~ +44 C
Temperature correction
C - 03h
C - 02h
C - 01h
± 00h
C
C + 01h
C + 02h
o
C) = (-2.876 x TEMP input AD value) + 463
o
C) is taken as a reference. (it is taken as '0'). Whenever the input AD value changes
Temperature correction
08h
07h
06h
05h
Center temperature
o
+ 15.0 C
+ 17.8 o C
+ 20.7 o C
o
+ 23.6 C
o
+ 26.5 C
o
+ 29.4 C
Center temperature
o
+ 0.5 C
o
+ 12.5 C
o
+ 23.6 C
o
+ 35.0 C
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