Fluke 744 Fluke 744 Users Manual - Page 38

Using Measure Mode, Measurement Ranges, Measuring Electrical Parameters - videos

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744 Users Manual Using Measure Mode Note To achieve best noise rejection and highest accuracy performance, do not use the battery eliminator, and tie all three common jacks together. The operating mode (i.e., MEASURE, SOURCE) is shown in a reverse-video bar on the display. If the calibrator is not in MEASURE mode, press M until MEASURE is shown. You must be in MEASURE mode to change any of the MEASURE parameters. Measurement Ranges The calibrator normally changes to the appropriate measurement range automatically. The lower right side of the display shows either "Range" or "Auto Range" depending on the range status. Auto Range switch points are shown in the specifications at the end of this manual. When you press the Range softkey, the range is locked. Press it again to cycle to and lock on the next higher range. Auto Range is reactivated when you select another measurement function. If the range is locked, overrange inputs produce a display of In Auto Range, out of range inputs produce a display of Measuring Electrical Parameters When you turn on the calibrator, it powers up in the dc voltage measurement function. Figure 10 shows electrical measurement connections. To select an electrical measurement function from either SOURCE or MEASURE/SOURCE mode, first press M for MEASURE mode, then proceed as follows: 1. Press m for current, v for dc voltage, h once for ac voltage or twice for frequency, or q for resistance. 28

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744
Users Manual
28
Using Measure Mode
Note
To achieve best noise rejection and highest
accuracy performance, do not use the
battery eliminator, and tie all three common
jacks together.
The operating mode (i.e., MEASURE, SOURCE) is
shown in a reverse-video bar on the display. If the
calibrator is not in MEASURE mode, press
M
until
MEASURE is shown. You must be in MEASURE
mode to change any of the MEASURE parameters.
Measurement Ranges
The calibrator normally changes to the appropriate
measurement range automatically. The lower right
side of the display shows either “Range” or “Auto
Range” depending on the range status. Auto Range
switch points are shown in the specifications at the
end of this manual. When you press the
Range
softkey, the range is locked. Press it again to cycle to
and lock on the next higher range. Auto Range is
reactivated when you select another measurement
function.
If the range is locked, overrange inputs produce a
display of
- - - - - -
. In Auto Range, out of range inputs
produce a display of
! ! ! ! ! !
.
Measuring Electrical Parameters
When you turn on the calibrator, it powers up in the
dc voltage measurement function. Figure 10 shows
electrical measurement connections. To select an
electrical measurement function from either
SOURCE or MEASURE/SOURCE mode, first press
M
for MEASURE mode, then proceed as follows:
1.
Press
m
for current,
v
for dc voltage,
h
once for ac voltage or twice for frequency, or
q
for resistance.