Sharp MD-MS701W Service Manual page 16

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MD-MS701W/MS702
[2] Temperature measurement value correction table
Ambient temperature
o
o
+14
C ~ +16
C
+17
o
C ~ +19
o
C
o
o
+20
C ~ +22
C
+23
o
C ~ +25
o
C
o
o
+26
C ~ +27
C
+28
o
C ~ +30
o
C
*Meaning of values
Temperature reference = Value to be predicted to be measured by the microcomputer at reference temperature
(+23.6
o
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
-5
o
C ~ +9
o
C
o
o
+6
C ~ +21
C
+17
o
C ~ +32
o
C
o
o
+29
C ~ +44
C
Temperature correction
- 03h
- 02h
- 01h
± 00h
+ 01h
+ 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
o
+ 20.7
C
+ 23.6
o
C
o
+ 26.5
C
+ 29.4
o
C
Center temperature
+ 0.5
o
C
o
+ 12.5
C
+ 23.6
o
C
o
+ 35.0
C
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