User Operational Manual
CM20 Digital Chronometer
TABLE OF CONTENTS
Revision: 1.5
Page 1
29/04/2022
TABLE OF CONTENTS
RECORD OF REVISIONS 1
SERVICE BULLETIN LIST 1
LIST OF EFFECTIVE PAGES 1
TABLE OF CONTENTS 1
INTRODUCTION 1
1. Proprietary Notice 1
2. Purpose of this Manual 1
3. Manual Description 1
4. Revisions 1
5. Warnings, Cautions and Notes 2
5.1 Warnings 2
5.2 Cautions 2
5.3 Notes 2
6. Technical Support 2
7. Installer Responsibility 2
8. Document/Equipment Feedback 2
9. List of Abbreviations 4
DESCRIPTION AND OPERATION 1
1. Description 1
1.1 General 1
1.2 Function Description 1
1.3 Limitations 2
1.4 References 2
1.5 Warnings and Cautions 2
2. Operation 3
2.1 General 3
2.2 Pre-flight Procedures 3
2.3 Test Function 3
2.4 Display Options and Modes 3
2.4.1 Local Time (LT) 5
2.4.2 LT Set Page 6
2.4.3 Flight Time (FT) 7
2.4.4 Maintenance Timer in Hours (MTH) 8
2.4.5 Flight Timer Alarm (FTA) 9
2.4.6 Flight Timer Alarm (FTA) Set Page 10
2.4.7 Elapsed Timer (ET) 11
2.4.8 Elapsed Timer Down (ETD) 13
2.4.9 Elapsed Timer Down (ETD) Set Page 14
2.4.10 Alarms 15
2.5 User Programmable Modes 16
2.6 Operating Features 16
2.7 Other Programmable Modes 16
