Technical data

Front Panel Operation
2400 Series Operation Manual, 33237 Revision A, May 2004 2-5
2.3 Front Panel Operation
This section describes front panel operation of the 2400 functions. Parameters for these functions are
input using one of the following data entry methods: numeric keypad, step up/step down keys or
rotary knob. Some data entry methods may not be available for some parameters.
2.3.1 Direct Entry Using Numeric Keypad
After selecting the desired parameter (I.E. Frequency in the CW menu), enter the new value using the
number keypad. After the new value has been entered, press the appropriate Units key to update the
2400 to the new setting. To enter negative values press the [BK/-] key before entering the first digit of
the new value. After the first digit of the new entry has been entered, the [BK/-] will serve as a back-
space and delete the previously entered digit.
2.3.2 Step Size
Parameters in CW, AM, FM, PM, Ramp and System menus can be modified using the Step Up or Step
Down keys. The step size for a specific parameter is edited using Numeric Keypad only. Refer to the
previous section for editing the step size parameter.
2.3.3 Step Up/Step Down
Position the cursor over the desired parameter by pressing the appropriate parameter softkey. The
step size for the parameter will be displayed at the bottom of the menu. Press the Up key to increase
the selected parameter by the specified step size shown at the bottom of the menu. Press the Down
key to decrease the selected parameter by the specified step size shown at the bottom of the menu.
2.3.4 Rotary Knob
The rotary knob is used to modify a parameter by rotating the knob clock wise or counterclockwise.
The parameter will be modified according to the step size for the selected parameter. System menu
parameters and Modulation activation parameters may not be edited using the rotary knob.