Chauvin Arnoux C.A 6549 Mode D'emploi page 52

- 3 4mm-dia. safety terminals identified as «+», «G», and «-»
- Access to the fuse that protects terminal "G"
- 8-way rotary switch:
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Off: switches instrument power off
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500 V-2 TΩ: insulation measurement at 500V up to 2 TΩ
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1000 V-4 TΩ: insulation measurement at 1000V up to 4 TΩ
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2500 V-10 TΩ: insulation measurement at 2500V up to 10 TΩ
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5000 V-10 TΩ: insulation measurement at 5000V up to 10 TΩ
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Adjust. 50...5000 V: insulation measurement with adjustable test voltage (from 40V to 5100V: 10V
steps from 40 to 1000V and 100V steps from 1000 to 5100V)
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Adjust. Step: insulation measurement with voltage step function (the test voltage varies in steps)
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SET-UP: adjustment of instrument configuration
- 1 yellow START / STOP key: beginning / end of measurement
- 8 elastomer keys each having a main function and a secondary function.
- 1 backlit graphic screen
- 1 socket for connection to line power (direct operation on line power and/or battery charging)
- 1 RS 232 serial INTERFACE male connector (9 pins) for connection to a PC or printer.
Note: The battery compartment is inside the housing.
2.1.2. KEYS
8 keys each having a main function and a secondary function :
2nd
select the secondary function written in yellow italics below each key.
MODE Primary function : before insulation measurements, select the desired type of measurement.
PRINT Secondary function : immediate printing of measurement result(s) on a serial or parallel
printer.
DISPLAY Primary function : browse throught the various screens accessible before, during and
after the measurement.
GRAPH
Secondary function : after a "timed run" measurement, display insulation resistance versus
measurement time.
4
Primary function : select a parameter to be modified, to the right. At the end of the line, the
cursor jumps to the beginning of the line (all the way to the left).
Secondary function : activate / deactivate display backlighting.
3
Primary function : select a parameter tobe modified, to the left
T° Secondary function : activate the calculation to refer the measurement value to the reference
temperature programmed in SET-UP .
5
Primary function : in the various menus, select a function; otherwise, generally, increment
the flashing parameter on which the cursor is positioned. Pressing and holding the key
increases the rate of change of the parameter.
ALARM Secondary function : activate / deactivate the alarms programmed in the SET-UP menu.
6
Primary function : in the various menus, select a function; otherwise, generally, decrement
the flashing parameter on which the cursor is positioned. Pressing and holding the key
increases the rate of change of the parameter.
SMOOTH Secondary function : enable / disable display smoothing in insulation measurement.
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