Use The Bar Graph; Maintenance - Fluke 175 User Manual

175, 177, 179
Users Manual

Use the Bar Graph

The bar graph is like the needle on an analog meter. It has an
overload indicator () to the right and a polarity indicator (±) to the
left.
Because the bar graph updates about 40 times per second, which
is 10 times faster than the digital display, the bar graph is useful
for making peak and null adjustments and for observing rapidly
changing inputs.
The bar graph is disabled when measuring capacitance or
temperature. In frequency, the bar graph accurately indicates the
voltage or current up to 1 kHz.
The number of lit segments indicates the measured value and is
relative to the full-scale value of the selected range.
In the 60 V range, for example (see below), the major divisions on
the scale represent 0 V, 15 V, 30 V, 45 V, and 60 V. An input of
−30 V lights the negative sign and the segments up to the middle
of the scale.
16

Maintenance

To prevent possible electrical shock, fire, personal
injury, or damage to the Product:
•
Repair the Product before use if the battery leaks.
•
Do not operate the Product with covers removed or
the case open. Hazardous voltage exposure is
possible.
•
Remove the input signals before you clean the
Product.
• Use only specified replacement parts.
• Have an approved technician repair the Product.
•
Use only specified replacement fuses.
•
Replace a blown fuse with exact replacement only for
continued protection against arc flash.
AIK11F.EPS
XW Warning