3-9 FIXED POWER LEVEL
OPERATION Thesignal generator provides leveled output power over a maximum
range of up to 33 dB (up to 149 dB with Option 2) for CW and sweep
frequency operations. Units with Option 15Aprovide leveled output
power over a maximum range of up to 27 dB (up to 141 dB with Op-
tion 2). The following paragraphs describe how to place the signal gen-
erator in fixed (non-swept) power level mode, select a power level for
output, select logarithmic or linear units, and activate level offset. Use
the Fixed (Non-Swept) Power Level Mode menu map (Chapter 4, Fig-
ure 4-7) to follow the menu sequences.
Selecting
Fixed Power
Level Mode
Toplace the 681XXC in a fixed power level mode
from a CW or sweep (analog, step, or manual) fre-
quency menu, press the main menu key
LEVEL/ALC
SELECT
At the resulting menu display,press Level . The
Level Menu (below) is displayed.
This menu lets you perform the following:
qEdit the power level parameter.
qEdit the level offset parameter.
qTurnlevel offset on/off.
Selecting a
Power Level There are several ways to select a power level for
output. Youcan (1) edit the current power level, (2)
enter a new power level, or (3) select one of the 10
preset power level parameters.
Editing the Current Power Level
Press Edit L1 toopen the power level parameter,
then edit the current power level using the cursor
control key or the rotary data knob. Toclose the
open power level parameter,press Edit L1 ormake
another menu selection.
Entering a New Power Level
Press Edit L1 toopen the power level parameter,
then enter the new power level using the keypad
681XXC OM 3-49
LOCAL (FRONT FIXED POWER
PANEL) OPERATION LEVEL OPERATION