+20
0
—20
0
ALC REF
OdBm
ADJUSTMENT OFFSETS ENTIRE
CURVE BY THE
SAME AMOUNT.
—lOclBm ADJUSTMENT ROTATES
CURVE
AROUND THE
OdBm POINT.
THUS
lIT
STRONGLY
AFFECTS —20 AND
+lBdBm POINTS.
P
OUT
0
/
—20
0
+20
ALC REF
—2OdBm
ADJUSTMENT HAS SLIGHT
EFFECT
AT —lOdBm,
NEGLIGIBLE ELSEWHERE.
P
OUT
0
—20
-20
ALC REF
-r
-
—
-20
V
/
+20
ALC REF
-i-lOclBm ADJUSTMENT
STRONGLY AFFECTS
+l8dBm,
SLIGHTLY AFFECTS 0,
NEGLIBIBLE ELSEWHERE.
+lBclBm ADJUSTMENT HAS MODERATE
EFFECT
ON +lOdBm,
SLIGHTLY
LESS
EFFECT AT ALL LOWER
POWERS.
Figure 5-48.
Typical ALC Adjustment Response Curves
P
OUT
0
—20
-20
P
OUT
+20
ALC REF
+20
+20
P
OUT
0
0
+20
5-94
Adjustments
HP 8340B/41B