Keysight U1271A - Learn more on

Introduction 1
Your Multimeter in Brief
U1271A/U1272A User’s Guide 43
Turns the backlight on or off.
Enters or exits the Setup mode.
• In the Setup mode, press or to
navigate through the menu pages.
Press or to cycle through
the available settings, or to edit the
existing values.
• Press to save the new settings
or values and exit the editing mode, or
press to exit the editing mode
without saving.
• Press for more than 1 second to exit
this mode.
page 27
and
page 125
Frequency test mode for current or voltage
measurements is enabled.
• Press to scroll through the
frequency (Hz), pulse width (ms), and
duty cycle (%) measurements.
• In duty cycle and pulse width
measurements, press to switch
between the positive or negative edge
trigger.
• Press for more than 1 second to exit
this mode.
Starts and stops the Data Logging.
• If data logging is set as (manual
data logging), pressing for more
than 1 second will log the present
reading into the memory. The display
will return to normal after a short while
(≈ 1 second). To manually log another
reading, press again for more
than 1 second.
• If data logging is set as
(automatic data logging), pressing
for more than 1 second will enter
the automatic data logging mode,
where data is logged at the interval
defined in the multimeter’s Setup.
• If data logging is set as (event
data logging), pressing for more
than 1 second will enter the event data
logging mode, where data is logged
each time a triggering condition is
satisfied.
• Press for more than 1 second to
exit the automatic or event data logging
mode.
page 101
and
page 116
Table 1-7 Keypad functions (continued)
Legend
Function when pressed for:
Learn
more on:
Less than 1 second More than 1 second
Setup
Exit
Dual
Setup
P
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M
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M
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A
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R
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H
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w
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Setup
H
z
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m
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L
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H
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%
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L
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Exit
Dual
Exit
Dual
H
z
%
m
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L
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H
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L
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H
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H
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