Chauvin Arnoux C.A 6521 Notice De Fonctionnement page 23

CONTENTS
1. PRESENTATION
1.1. General Presentation ................................................... 25
1.1.1. The Megohmmeter ................................................. 25
1.1.2 Accessories ............................................................ 25
2. DESCRIPTION
2.1. Unit ................................................................................ 26
2.1.1. C.A 6521 ................................................................ 26
2.1.2. C.A 6523 ................................................................ 26
2.1.3. C.A 6525 ................................................................ 26
2.2. Display .......................................................................... 26
2.2.1. Symbols ................................................................. 26
2.2.2. Bargraph ................................................................. 27
2.2.3. Digital display ......................................................... 27
2.3. Control keyboard .......................................................... 27
2.3.1. Yellow key ............................................................... 27
2.3.2. ALARM key (C.A 6523 and C.A 6525) .................. 27
2.3.3. Key (C.A 6523 and C.A 6525) ........................... 27
2.3.4. Key (C.A 6523 and C.A 6525) ........................... 28
2.3.5. Key (C.A 6523 and C.A 6525) ......................... 28
2.3.6. TIMER key (C.A 6525) ........................................... 28
3. MEASUREMENT FUNCTIONS
3.1. Insulation ...................................................................... 28
3.1.1. Safety checking ...................................................... 28
3.1.2. Insulation measurement ........................................ 29
3.2. Continuity ...................................................................... 29
3.3 Resistance (C.A 6523 and C.A 6525) .......................... 30
4. SPECIAL FUNCTIONS
4.1. Start/stop ...................................................................... 30
4.2. Automatic shutdown ..................................................... 30
4.2.1. Deactivation of automatic shutdown function ........ 31
(C.A 6523 and C.A 6525) ....................................... 31
4.3. Power supply autotest .................................................. 31
4.4. Buzzer ........................................................................... 31
4.4.1. The different audible signals .................................. 31
4.4.2. Deactivation of the buzzer ..................................... 32
4.5. Alarm thresholds (C.A 6523 and C.A 6525) ................. 32
4.5.1. Programming of the alarm thresholds ................... 32
4.5.2. Activation/deactivation of the alarm thresholds ..... 32
4.5.3. Triggering of the alarm ........................................... 33
4.6 Compensation of measuring leads .............................. 33
(C.A 6523 and C.A 6525) ............................................. 33
4.7. Timer (C.A 6525) .......................................................... 34
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