YOKOGAWA AQ7260 OTDR, User Manual, Page: 433 / 442

Chapter 10 APPENDIX
10-6
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When the power of the battery pack is insufficient
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When the instrument’s internal temperature is excessively high
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When the instrument’s internal temperature is excessively low
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When the battery pack’s temperature is excessively high
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When the battery pack’s temperature is excessively low
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When the AC power voltage is excessively high
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When the AC power voltage is excessively low
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When the battery pack’s voltage is excessively high
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When the battery pack’s voltage is excessively low
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When the charging circuit is abnormal
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When the temperature monitor IC has trouble.
Massage example: When the power of the battery pack is insufficient.
Low battery.
OTDR will shutdown in 10 sec.