Tektronix 494AP Water Dispenser User Manual


 
Theory of
Operation
-
494A1494Ap
Servlce,
Vot. 1
Table
7-5
PROGRESSION
OF
GAIN REDUCTION
Input
Level
Point
1
0.01
0.0316
0.1
0.316
Point
2
0.316
0.1
0.316
Point
3
Poinl
4
Beyond
Logging
Range
x-10
dB
0.00316
0.01 0.316 0.1
- -
0'216
X Level
X+10
dB
X+20
dB
x+30
dB
x+40
dB
0.1
0.316
0.316
1-0.684-1
1.0 1.€
r-0.684
1-
0.684-_-1
1.0 1.684
l_
0.68a
___r
1_
0.684
=__1
1_
0.684
1.0
1.684
2.368
X+50
dB
3.16
Beyond
Logging Range
o
o
o
o
o
,
o
o
o
o
o
t
I
o
o
o
o
o
o
I
t
a
o
o
o
a
o
o
a
,
o
I
t
o
I
o
O
o
I
o
o
o
,
O
Figure
7-10. Curve
showing
end-ol-range
for a log amplifier.
Figure
7-9.
Log
amplifaer gain
curye
rhowlng
break
polnts.
LIN
VOLTS
OUT
END
OF AMPLIFIER DYNAMIC RANGE
44r&100
7-30