Technical Manual
Model 600
1
TABLE OF CONTENTS
WARRANTY ............................................................................................................................. 3
MODEL 600 OPERATIONAL CHARACTERISTICS ................................................................ 4
Normal Mode ......................................................................................................................... 4
Monitor Mode......................................................................................................................... 4
Pulse Timer............................................................................................................................ 4
Backlight ................................................................................................................................ 4
Error Indicators ...................................................................................................................... 5
Broken Probe .................................................................................................................................5
Low Battery ....................................................................................................................................5
Instrument Malfunction ...................................................................................................................5
Self-Tests............................................................................................................................... 5
Battery Installation Display Test............................................................................................. 5
Thermometer Startup Tests................................................................................................... 5
Display and Horn Test ....................................................................................................................5
Internal Calibration Test .................................................................................................................5
Internal Microprocessor Test ..........................................................................................................6
Battery Life............................................................................................................................. 6
Shelf Life ........................................................................................................................................6
Temperature Taking Without Backlight...........................................................................................6
Temperature Taking With Backlight ...............................................................................................6
C/F Mode Switch.................................................................................................................... 6
Normal/Monitor Mode Switch................................................................................................. 6
MODEL 600 THEORY OF OPERATION .................................................................................. 7
Technical Overview................................................................................................................ 7
Temperature Measurement and Display................................................................................ 7
Probe Temperature Measurement......................................................................................... 8
Monitor Mode Operation ........................................................................................................ 8
Normal Mode Operation ........................................................................................................ 8
SELF TESTS ......................................................................................................................... 9
Internal Calibration Test .................................................................................................................9
Internal Microprocessor Memory Test.............................................................................................9
Broken Probe Test .........................................................................................................................9
DISPLAY................................................................................................................................ 9
Display Voltage Reference .............................................................................................................9
Display............................................................................................................................................9
Horn ...............................................................................................................................................9
Backlight.........................................................................................................................................9
Power Consumption ............................................................................................................ 10
Low Battery Detection.......................................................................................................... 10
Pulse Timer Operation......................................................................................................... 10
SPECIFICATIONS.................................................................................................................. 18
Summary of Contents for Diatek 600
Page 1: ...Diatek Model 600 Thermometer Technical Manual Thermo Menu Operation Manual...
Page 13: ...Technical Manual Model 600 11 Figure 1 Block Diagram...
Page 14: ...Diatek A Welch Allyn Company 12 Model 600 Figure 2 Schematic...
Page 15: ...Technical Manual Model 600 13 Figure 3 Schematic earlier serial numbers...
Page 16: ...Diatek A Welch Allyn Company 14 Model 600 Figure 4 Printed Circuit Board Component Layout...
Page 17: ...Technical Manual Model 600 15 Figure 5 Final Assembly...
Page 18: ...Diatek A Welch Allyn Company 16 Model 600...
Page 19: ...Technical Manual Model 600 17 Figure 6 Operating Controls and Components...