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789/787B
Users Manual
30
Battery Life
Warning
To avoid false readings, which could lead to
possible electric shock or personal injury,
replace the battery as soon as the battery
indicator (b) appears.
Table 12 shows typical alkaline battery life. To preserve
battery life:
• Use current simulation instead of sourcing when
possible.
• Avoid using the backlight.
• Do not disable the automatic power-off feature.
• Turn the meter off when not in use.
Table 12. Typical Alkaline Battery Life
Meter Operation Hours
Measuring any parameter 140
Simulating Current 140
Sourcing 12 mA into 500 Ω 10
Maintenance
This section provides some basic maintenance
procedures. Repair, calibration, and servicing not covered
in this manual must be performed by qualified personnel.
For maintenance procedures not described in this manual,
contact a Fluke Service Center.
Periodically wipe the case with a damp cloth and
detergent; do not use abrasives or solvents.
Warning
To prevent possible electrical shock, fire, or
personal injury:
• Do not put battery cells and battery packs
near heat or fire. Do not put in sunlight.
• Replace a blown fuse with exact replacement
only for continued protection against arc
flash.
• Do not operate the Product with covers
removed or the case open. Hazardous voltage
exposure is possible.
• Use only specified replacement parts.
• Use only specified replacement fuses.
• Have an approved technician repair the
Product.
1.888.610.7664 sales@GlobalTestSupply.com
Fluke-Direct.com
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