Operating Your Instrument
2
Keysight 53147A/148A/149A Operating and Programming Guide
95
3 Press the Shift key, and then press the Menu (Reset/Local) key.
One of the items in the instrument’s menu is displayed (if the menu has not
been used since the instrument was turned on, the initial menu display is
“
REF OSC > INT
”).
4 Use the up and/or down arrow keys to cycle through the menu until
“HEAD > OFF” is shown.
Note that a power head model number may appear instead of “
OFF
” if a power
head was previously chosen.
5 Press the right arrow key.
The flashing indicator after
HEAD
changes from to , and “
OFF
” (or the
currently selected power head model number) begins to flash.
6 Select the model number of the power head you intend to use by pressing
the up- and/or down-arrow key repeatedly until the correct model number
is displayed, and then press Enter.
NOTE
The upper portion of the display may show a frequency measurement or a
voltage measurement if a signal is applied to the Counter or DVM input and the
Counter or DVM is enabled. In this example, the Counter is enabled, but no
signal is applied, so the upper portion of the display shows CH2 NO SIGNAL. If
the DVM is enabled with no signal applied, the upper portion of the display will
show VDC 0.000.
NOTE
You can change the values of the frequency/power-factor data points that are
stored in the instrument’s memory (or add data points) by pressing the
right-arrow key while a power-head model number is displayed and pressing the
right-arrow key again when “LIST” is displayed. For instructions on entering or
changing data, see
The instrument is shipped with calibration tables in nonvolatile memory for five
of the supported power heads. The data points in these tables are almost always
sufficient to provide accurate readings, so it is usually unnecessary to add or
modify the values in the tables.
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