Power; Auto Power Off; Backlight; Power-On Options - Fluke 393 User Manual

Power

Two AA batteries supply power to the Clamp:
• To turn on the Clamp, rotate the control knob from OFF to a function.
• To turn off the Clamp, rotate the control knob to OFF.

Auto Power Off

The Clamp automatically powers off after 20 minutes of no use. If the Clamp automatically
powers off, turn the control knob to OFF and then to a function to resume operation.
To disable auto power off, see
Auto power off is always disabled when you use the Min/Max/Avg, Auto Hold,
Fluke Connect, and Data Logging functions.

Backlight

The display on the Clamp includes a backlight that improves the readability in dim work areas.
393: Push @ to toggle on/toggle off the backlight.
•
• 393 FC: Push @ >2 s to toggle on/toggle off the backlight.
The backlight has an auto off feature that turns off the backlight after 2 minutes of no use. To
disable the auto off backlight feature, see

Power-On Options

Power-on options allow you to customize the controls:
• Disable Auto Power Off
• Disable Auto Backlight Off
• View firmware version and light all LCD segments
• Erase Logging Memory
• Disable Beeper
Power-On Options.
Note
Power-On
CAT III 1500V TRMS Clamp Meter
Options.
Before You Start
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