Fluke 179 - Manual (Page 9)

True RMS Multimeters
Manual Ranging and Autoranging
5
Manual Ranging and Autoranging
The Meter has both Manual range and Autorange modes.
⇒ In the Autorange mode, the Meter selects the range with the
best resolution.
⇒ In the Manual Range mode, you override Autorange and select
the range yourself.
When you turn the Meter on, it defaults to Autorange and Auto
Range is displayed.
1. To enter the Manual Range mode, press RANGE.
Manual Range is displayed.
2. In the Manual Range mode, press RANGE to increment the
range. After the highest range, the Meter wraps to the lowest
range.
Note
You cannot manually change the range in the MIN MAX
AVG, or Display HOLD modes.
If you press RANGE while in MIN MAX AVG, or Display
HOLD, the Meter beeps twice, indicating an invalid
operation, and the range does not change.
3. To exit Manual Range, press RANGE for 1 second or turn the
rotary switch.
The Meter returns to Autorange and Auto Range is displayed.
Power-Up Options
To select a Power-Up Option, hold down the button indicated while
turning the Meter from OFF to any switch position.
Power-Up Options are cancelled when the Meter is turned OFF.
Button Power-Up Options
AutoHOLD
H
K switch position turns on all LCD segments.
L switch position displays the software version
number.
mL switch position displays the model number.
M Disables beeper. (bEEP)
R Enables "Smoothing" mode. (S---)
Dampens display fluctuations of rapidly changing
inputs by digital filtering.
B
(YELLOW)
Disables automatic power-down ("Sleep mode").
(PoFF)
Sleep mode is also disabled while the Meter is in a
MIN MAX AVG Recording mode, or the AutoHOLD
mode.
S Disables automatic 2-minute backlight timeout.
(LoFF) (Model 177 and 179 Only)