User`s guide

U1273A/U1273AX Handheld Digital Multimeter
Understanding the Keypad
U1273A/U1273AX Quick Start Guide 5
Understanding the Keypad
Legend
Key response when pressed for:
Less than 1 second More than 1 second
Sets the Null/Relative
mode.
Sets the Scale mode for
the specified ratio and
unit display.
Starts the MaxMin
recording.
Starts and stops the
Peak recording.
Freezes the present
reading in the display.
Automatically freezes
the present reading once
the reading is stable.
Switches between avail-
able dual-combination
displays.
Exits the Hold, Null,
MaxMin, Peak, fre-
quency test, and dual
display modes.
Increases the OLED
brightness incremen-
tally when LOW,
MEDIUM, or HIGH set-
ting is selected.
Enters and exits the mul-
timeter’s Setup menu.
Switches between fre-
quency, pulse width, and
duty cycle measure-
ments.
Starts and stops the
Data Logging.
Sets a manual range and
disables autoranging.
Enables auto-ranging.
Switches between the
primary and shifted
functions.
Enters and exits the Log
Review menu.
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Exit
Dual
Setup
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