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Introduction
Thank you for purchasing the TOPCON TECHNOHOUSE Luminance Colorimeter BM-7AC.
This instrument is a Luminance Colorimeter for measuring light with high precision from a light emitting
element such as a CRT, LCD, LCD backlight, LED or the like, or reflected light from a painted surface or
printed material.
Read this manual carefully before using the BM-7AC in work applications.
Precautions for Use
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Be sure to only use the AC adapter supplied with this instrument, or a separately sold
authorized AC adapter. Using another AC adapter could result in trouble. The input voltage
should be 100V to 240V AC, and the power-supply frequency should be 50 Hz to 60 Hz.
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For energy saving, when the unit will not be used for an extended period of time, unplug the
power plug from the socket.
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Keep the instrument away from water and liquid. This instrument is not water-resistant.
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Do not use the instrument for measuring bright objects that exceed the measurement range, or
for measuring extremely bright objects such as the sun. It may cause damage the photo-
detector, and stable measurement may not be possible.
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Do not use the instrument in dusty, very damp or humid areas, or in areas where corrosive gas
may be generated.
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Do not use the instrument in areas where sudden changes in temperature could occur. This
instrument contains temperature compensation circuit; however, stable measurement may not
be possible in environments where there are sudden changes in temperature.
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Do not subject the instrument to large impact such as dropping it, and avoid using or storing
the instrument in areas where there is constant vibration. This instrument uses high-precision
optical parts, so subjecting the instrument to harsh conditions could result in trouble. Be
careful that the instrument is not subjected to direct vibration or shock by placing it in a
carrying case (optional) when carrying it.
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When storing the instrument, put it in a carrying case (optional), and store it at room
temperature. Do not store the instrument in a hot or humid environment such as inside an
automobile.
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In order to maintain measurement precision, perform calibration at least once a year. When
performing calibration, consult with the dealer or TOPCON TECHNOHOUSE CORPORATION.
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When requesting calibration, put the instrument in its carryin case (optional), and then put it in
a carton box full of shock-absorbing material before sending it. If the carrying case has not
been purchased, consult with your dealer or TOPCON TECHNOHOUSE CORPORATION.
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When calibration is performed, the measurement coefficient stored in this instrument will be
deleted. Be sure to transfer the measurement coefficient to a PC before requesting
calibration.
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Please do not peel off the sticker stuck on the back of the main unit. If you peel it off, all
warranty will be invalid.
