Before going to the Leveling Menu from the ALC
Mode menu, select whether the external ALC signal
is to be connected to the front- or rear-panel
EXT
ALC IN
connector.
At the ALC Mode menu, press
Ext ALC Front
to se-
lect front panel input, or
Ext ALC Rear
to select
rear panel input.
Now, press
Leveling Menu
to go to the Leveling
Menu.
Next, select the type of external sensor you are us-
ing to detect the output power.
To select the external ALC input from an external
detector, press
External Detector
.
To select the external ALC input from a power me-
ter, press
Power Meter
.
After you have made the external ALC input connec-
tion and selected the sensor type, press
ALC Loop
.
The ALC Loop Menu (below) is displayed.
While monitoring the power level at the external de-
tection point, first press
Ext ALC Adj
, then use the
cursor control key or rotary data knob to adjust the
ALC signal to obtain the set power level.
To return to the Leveling Menu, press
ALC Mode
then press
Leveling Menu
.
LOCAL (FRONT
LEVELING
PANEL) OPERATION
OPERATIONS
3-50
680XXB OM
Summary of Contents for 680 B Series
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Page 11: ...Figure 1 1 Series 680XXB Synthesized CW Generator...
