Fluke 9640A Series, Instruction Manual

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Local Operation
Screen Controls and Indicators
3
3-13
Pressing

sets the Instrument to standby and brings up the
Leveled-Sine
screen,
establishing the sine wave as the selected RF output signal. The same is true of the

and

keys. As each key is pressed, the instrument enters standby and brings up the
corresponding modulation or sweep screens. Pressing

sets the Instrument to operate
and adjusts the RF output signal to match the screen.
Data fields within each screen contain values, typically numeric data, which define the
parameters of the RF Output signal. By editing these values, the user can precisely
control the RF output signal.
Editing Settings – The Vertical Soft Keys
Each numeric data field supports up to three edit modes:
•
Cursor edit
•
Step edit
•
Keypad edit
Any time a field has the focus it is in one of the three edit modes. A unique look ( or
pattern) identifies each of the modes. The
Cursor edit
mode displays a shaded field with
a black cursor placed over a single digit in the field. The
Step edit
mode displays the
entire field shaded black with white characters. The
Keypad edit
mode displays a shaded
box for entering characters. The user may choose any one of these edit modes when
entering numeric field data.
The following paragraphs use the
Leveled-Sine
screen to discuss the edit modes. The
edit modes and the techniques discussed here also apply to the
Modulation
and
Sweep
screens. The
Modulation
and
Sweep
screens are not, therefore, discussed separately.
Note
Step edit
does not apply to the sweep screen; only
Cursor edit
and
Keypad edit
are available in the sweep function.
Before proceeding, refer to the Data Fields descriptions earlier in this section under
Controls, Indicators, and Connectors (Display) as a refresher on how to select data fields.
To follow the discussion on the Instrument, switch on power to the Instrument and then
press

to bring up the
Leveled-Sine
screen. Press
STBY
to set the source to
standby. Also, remove any connections from the front panel Leveling Head I/O
Connectors. The screen on the I/O Display will closely resemble the following
Leveled-Sine
screen.
Cursor Edit
When in the
Step edit
mode, if the soft label for the focus field includes a
(Cursor edit)
marking, press the
Frequency (Cursor edit)
soft key; the focus field changes the edit
mode to
Cursor edit
.
In
Cursor edit
mode, the focus field pattern is shaded with a black cursor placed over a
single digit. In addition, the soft label for the field includes a
(Step edit)
marking, when
appropriate, as shown in the following
Leveled-Sine
screen. The cursor keys provide for
right and left cursor movement within the field. To adjust the value of the selected digit,
the user may choose between the

keys or the spin wheel. To ensure access to the
full dynamic range and resolution of the instrument, notice that the cursor will move
beyond the left- and right-most digits in the field.