1
Getting Started
28
Keysight U1211A, U1212A, and U1213A User’s and Service Guide
Using the clamp meter buttons
Figure 1-5
Function and status buttons
The buttons located between the annunciator display and input terminals have
two functions: the primary functions (labels printed above the buttons) and
secondary functions (labels printed below the buttons). The primary function is
accessible by pressing the button momentarily, while the secondary function is
accessible by pressing the button for more than 1 second. Only
do not
have secondary function.
Primary
functions
Secondary
functions
Button
Description
– Press
Shift/Peak
momentarily to perform a
shifted
function. The
shifted
function is mostly
used with the rotary switch to cycle between measurement functions. See
on page 30 for more information.
– Press
Shift/Peak
for more than 1 second to perform Peak function. See
page 59 for more information.
– Press
Hz/%/
momentarily to enable frequency measurement on the secondary display in
the annunciator display.
– Press
Hz/%/
momentarily again (after enabling frequency measurement) to perform duty
cycle (%)
[a]
function.
– Press
Hz/%/
for more than 1 second to enable backlight illumination.