6. MESSAGE CODE
This section describes the message code for the LCR Meters.
OVER -01
Cause:
1. If the impedance of “Device-under-test” is small than the existing
measurement range of the LCR Meters, the “OVER -01 ” message will be
displayed on the LCD monitor.
Calculation formula:
Capacitance: XC=1/2πfC
Inductance: XL=2πfL
where f=test frequency in Hz
2. If the inductor of “Device-under-test ” is very large at a very high “test
frequency”, the “Resonance effect ” will occur and the impedance will
decrease. Hence, the measured value is useless. Meanwhile, an “OVER -01”
message will be displayed on the LCD monitor.
Solution:
1. Turn on the “Constant Voltage” mode (please refer to 4-5-5. Constant
Voltage Source, page 22, for details).
2. Select the less measurement range. Please refer to table B-1: Range Hold,
page 42, in order to reach the exact measurement range. Turn on the “Range
Hold” mode after the measurement range fix ed.
Note: Both two solutions will reduce the accuracy of the LCR Meters.
LCR-800 Series User Manual
45
7. MAINTENANCE
This section includes the basic maintenance information for the LCR Meters.
7-1. Cleaning
Remove the AC input power (disconnect and remove the power cord) from the
LCR Meters before attempting to clean the instrument.
To clear the LCR Meters, use soft cloth dampened in a solution of mild detergent
and water. Do not spray cleaner directly onto the instrument, since it may leak
into the cabinet and cause damage.
Do not use chemicals containing benzine, benzene, xylene, acetone, toluene, or
similar solvents.
Do not use abrasive cleaners on any portion of this equipment.
7-2. Battery Replacement
A replaceable 3V lithium battery (BR-2/3A type) supplies the backup power of
non-volatile memory for the LCR Meters. This battery probably needs to be
replaced after using for 3 years.
CAUTION: Danger of explosion if battery is incorrectly replaced.
Replace only with the same or equivalent type recommended by
the manufacturer. Discard used batteries according to the
manufacturer’s instructions.
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