Chapter 4, FRONT AND REAR PANELS
4-4
Figure 4-3, Active Cursor Activation
As an example of this operation, suppose that the oscillator frequency is
1000.000 Hz and it is required to change it to 1001.000 Hz. Simultaneously press
both and keys adjacent to the oscillator frequency display. Move the cursor,
by repeated double-key presses, until it is under the digit that is to be changed, in this
case the zero to the left of the decimal point. Then press the key to increment the
frequency by 1 Hz. The cursor will disappear as soon as the frequency is adjusted but
its position remains active until changed (see figure 4-4).
Figure 4-4, Active Cursor Operation
The double-key press action can also be performed with one finger by firmly
pressing the center of the key rocker that will deform to press both keys. The
active cursor can be used to set any particular digit. For example, if you only want to
adjust the reference phase in one degree steps leave the cursor over the first digit to
the left of the decimal point of the reference phase value.
Auto Repeat
If a or key adjacent to a control is pressed and held, then its action is
automatically repeated such that the control setting is incremented or decremented at
a rate approximately ten times faster than can be achieved by repeated manual key-
presses.
Function 2: To Select a Menu or Sub-Menu
When the screen adjacent to a key pair displays a menu name, then pressing
either the or key selects that menu.
Function 3: To Execute a Pre-Programmed Function
When the screen adjacent to a key pair displays a pre-programmed function,
such as Auto-Measure or start frequency sweep, then pressing either the or
key executes that function.
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