Fluke 77 IV [9/18] Manual ranging and autoranging

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 mode.

If you press RANGE while in MIN MAX

AVG, the Meter

beeps, 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 on.

Power-Up Options are cancelled when the Meter is turned OFF.

Button Power-Up Options

Turns on all display segments when in VAC switch

position.

Disables beeper. bEEP is diplayed when enabled.

Enables "Smoothing" mode. '___ is displayed when

enabled.

Dampens display fluctuations of rapidly changing

inputs by digital filtering.

(YELLOW)

Disables automatic power-down ("Sleep mode").

PoFF is displayed when enabled

Sleep mode is also disabled while the Meter is in a

MIN MAX AVG Recording mode, or the AutoHOLD

mode.

Disables automatic 2-minute backlight timeout.

LoFF is displayed when enabled.