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!:i
0
~
.....
:::)
Q.
.....
:::)
0
APPLICATION EXAMPLES
LINE
LOC OBJECT SOURCE STATE"MENT
o 488AEF LOA SI. KP5. ROO
2
1 400A8C ADD 51. KP 1. RO:}
3
2 40004F LOA SI. SI. RII
4
3 4000FB SUB HI. SI. ROO
5
4 404CCF LOA DAR. HI. ROO
6
:5 788200 AOD HI. KP4, LOt, eNDS
7
6 44086E LOA H2. HI. R04
8
7 44088C ADD H2. HI. R05
9
8 46006E LOA H2. H2. R04
10
9
440860 ADD H2. HI. RI2
I I
10
4600~B
SUB VCO. H2. ROO
12
I I 424CEF LOA DAR. VCO. ROO
13
12 7C82DD ADD VCO. KP4. LOI. CNDS
14
13 421BE'F LOA OSC. VCO. ROO
15
14 4B92EB SUB OSC. KP4. ROO
16
15 4BIOC7 ABS OSC. OSC. LOI
17
16 4B92EB SUB OSC. KP4. ROO
IB
17 4BIOCD ADD OSC. OSC. LOI
19
SYrlBOL
VALUE
51
HI
H.!
V(ll
ose
ASSEMBLY COMPLETE
ERRORS
0
WARNINGS
RAMSIZE
ROMSIZE
18
• SeT SWEEP RATE FOR SLo
=
4HZ
• SWEEP RATE GENERATOR IS HI
• RESET HI
IF (
0
• H2 IS SCALED SWEEP WAVE"FORM WHICH
•
DRIVES VCO.
RESULTING
IN SLO MAX
•
FREGUENCY OF 13KHZ
• VOLTAGE CONTROLLED OSCILLATOR
• RESET VCO IF (
0
• WAVESHAPING WILL BE DONE IN RAM LOCAl ION OSC
• CENTER SAWTOOTH ABOUT ZERO
• DOUBLE AND TAKE ABSOLUTE VALUE
• CENTER TR IANCLE WAVE ABOUT ZERO
• MULTIPLY
BY
THREE
WAVEFORM IS CLIPPED TO
•
BECOME TRAPAZOIDAL
RESULT IS IN OSC
Figure 7-3. Sweeping Local Oscillator Program
1.0
r---------------------~
O.B
-10
0.6
I
-20
I
I I
0.4
I I
II
I
I
0.2
II I
I:
I
!
X
=
INPUT
Y
=
OUTPUT
.....
EQUATION
INPUT RANGE
:::)
Q.
~
Y
0.219(X)
+
0.781
05 .. X<1
-30
Y
0.5(X)
+
0 641
0.25 .. X< 0.5
Y
X
+
0.516
0125" X < 025
Y
2(X)
+
0.391
o
0625 " X < 0 125
Y
4(x)
+
0.270
0.03125" X < 00625
Y
12.75(X)
0" X < 0.03125
-40
0.5
0.03125
INPUT (VOLTS)
Figure 7-4. Log Amplifier Piecewise Linear Approximation Transfer Characteristics
7-3
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