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TESTS INDICATE THAT WHEN USING THE FLUKE 8125A IN EITHER THE BATTERY MODE OR
WITH A TWO WIRE V AC INPUT, THERE CAN BE UP TO 180 V AC POTENTIAL BETWEEN THE
CASE AND GROUND. ACCORDINGLY, IF THE TI IS A FLUKE 8125A AND A THREE TO TWO
WIRE ADAPTER IS USED, OR IF THE INSTRUMENT IS POWERED FROM THE OPTIONAL
BATTERY PACK WITH THE LINE CORD DISCONNECTED, ENSURE THAT THE TI CASE IS
GROUNDED. THE GROUND LEAD SHOULD BE CONNECTED BETWEEN EARTH GROUND AND
THE HINGE PIN ON THE TI CASE.
3.1 Set all equipment controls as necessary to avoid damage to the equipment and so that dangerous voltages will not be
present on output terminals when power switches are turned on.
3.2 Connect all applicable equipment to the appropriate power source, and turn all power switches on.
3.3 Allow a 30 minute warm up time for the calibrator and a sufficient warm up time for the TI (see manufacturer's
manual).
The calibrator may be warmed up on battery or ac power or a combination of both. When the power switch
is on, it will automatically switch to battery power when unplugged from the ac line. It may be warmed up
in transit to another location, or if previously warmed up, it may be transported on battery power (power
switch on) to avoid any further warm up requirement. Transport the calibrator with the function switched to
OHMS to avoid electrical shock, and the rotary switch in the 10 M (BTRY SAVER) position for minimum
battery drain. When operating the calibrator on battery power, use the 10 M position for standby.
3.4 As applicable adjust the TI controls that are normally required to electrically zero the TI or to precalibrate certain
functions prior to the TI usage.
VOLTAGES HAZARDOUS TO LIFE MAY BE PRESENT. USE EXTREME CAUTION.
Manually set the TI controls to the required voltage ranges to hold the measurement in the specified range.
If a measurement must be performed in the TI auto mode because the TI is not equipped with a manual range
selector, the calibration test measurement values have been chosen to avoid any measurement problem which
may arise as a result of the TI automatic downranging and upranging characteristics.
SECTION 3
PRELIMINARY OPERATIONS
WARNING
NOTE
SECTION 4
CALIBRATION PROCESS
WARNING
NOTE
NAVAIR 17–20VQ–05
3
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