Fluke NetDAQ 2645A - Manual (Page 6)

DC POWER SOURCE
The instrument may also be operated from a 9V to 16V dc power source when
either the rear panel ground binding post or the power cord grounding conductor
is connected properly.
USE THE PROPER FUSE
To avoid fire hazard, for fuse replacement use only a 1/4 ampere, 250V non-time
delay line fuse.
GROUNDING THE INSTRUMENT
The instrument utilizes controlled overvoltage techniques that require the
instrument to be grounded whenever normal mode or common mode ac voltages
or transient voltages may occur. The enclosure must be grounded through the
grounding conductor of the power cord, or if operated on battery with the power
cord unplugged, through the rear panel ground binding post.
USE THE PROPER POWER CORD
Use only the power cord and connector appropriate for the voltage and plug
configuration in your country.
Use only a power cord that is in good condition.
Refer power cord and connector changes to qualified service personnel.
WARNING!
DO NOT OPERATE IN EXPLOSIVE ATMOSPHERES
To avoid personal injury or death, do not remove the instrument cover without first
removing the power source connected to the rear panel. Do not operate the
instrument without the cover properly installed. Normal calibration is accomplished
with the cover closed. There is no need for the operator to remove the cover
except to replace the fuse. Access procedures and the warnings for such
procedures are contained both in this manual and in the Service Manual. Service
procedures are for qualified service personnel only.
DO NOT ATTEMPT TO OPERATE IF PROTECTION MAY BE IMPAIRED
If the instrument appears damaged or operates abnormally, protection may be
impaired. Do not attempt to operate the instrument under these conditions. Refer
all question of proper instrument operation to qualified service personnel.