Operating Your Instrument
2
Keysight 53147A/148A/149A Operating and Programming Guide
113
Using the Menu
The Keysight 53147A/148A/149A’s Menu makes it easy to control a number of the
instrument’s features and functions. You use the Selection (arrow) keys to
navigate to the setting you want to change and then to actually make the
changes.
1 Press the Shift key and then the Menu (Reset/Local) key to display the
Menu.
When you press the
Shift
key, the
Shift
annunciator (near the bottom-right
corner of the display) activates. When you press the
Menu
(
Reset/Local
) key,
the
Shift
annunciator goes off, and the first menu item is displayed. If you have
not previously invoked the Menu since you last turned the instrument on, the
first menu item is
REF OSC
, the Reference Oscillator.
2 Press the right-arrow key to change the setting for the Reference Oscillator.
The flashing annunciator ( ) in the display reverses direction to indicate that
you can now change the setting by pressing either the up-arrow key or the
down-arrow key. In the case of the Reference Oscillator function, which has
only two possible settings (INTernal and EXTernal), pressing either the up-
arrow or the down-arrow has the same effect (it toggles the setting from INT to
EXT or from EXT to INT).
NOTE
The Counter will not switch to EXT (external) unless a suitable reference signal is
available at the External Reference connector.
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