3-7
CW FREQUENCY
OPERATION
One of the sweep generator’s major functions is to produce discrete
CW frequencies across the frequency range of the instrument. The fol-
lowing paragraphs describe how to place the 681XXB in the CW fre-
quency mode, select a CW frequency and power level for output, and
activate the CW ramp. Use the CW Frequency Mode menu map (Chap-
ter 4, Figure 4-2) to follow the menu sequences.
Selecting
CW Mode
To place the 681XXB in the CW frequency mode,
press the main menu key
CW/SWEEP
SELECT
At the resulting menu display, press
CW
. The CW
Menu (below) is displayed.
NOTE
When the sweep generator is reset, it
automatically comes up operating in the
CW frequency mode.
Selecting
a CW
Frequency
There are several ways to select a CW frequency for
output. You can (1) edit the current frequency, (2) en-
ter a new frequency, or (3) select one of the 20 pre-
set frequency parameters.
Editing the Current Frequency
Press
Edit F1
to open the frequency parameter,
then edit the current CW frequency using the cur-
sor control key or the rotary data knob. To close the
open frequency parameter, press
Edit F1
or make
another menu selection.
Entering a New Frequency
Press
Edit F1
to open the frequency parameter,
then enter the new CW frequency using the keypad
and appropriate terminator key. To close the open
frequency parameter, press
Edit F1
or make an-
other menu selection.
LOCAL (FRONT
CW FREQUENCY
PANEL) OPERATION
OPERATION
NOTE
Refer to Chapter 7, paragraph 7-2
for Master-Slave mode operating
instructions.
681XXB OM
3-19
