Amplitude Modulator Guide; Amplitude Modulation Receiver Guide - Wavetek 193 Instruction Manual

6-25
Settings
AM
Full cw
Full cw
Off
Sine
AM
Control
AUX GEN MODE
WIDTH/dF/dM
AM CARRIER LEVEL/NULL
SUPPRESSED CARRIER
AUX GEN FUNC
FUNC (Main Generator)
6.6.7 Amplitude Modulation Receiver Guide
Set the controls as shown; then perform the checks in
table 6-23 and take waveform measurements. Refer
to figure 6-32.
Setting
AM
Full
cw
Full cw
Off
AM
Control
AUX GEN MODE
WIDTH/dF/dM
AM CARRIER LEVEL/NULL
SUPPRESSED CARRIER
FUNC (Main Generator)
6.6.6 Amplitude Modulator Guide
Set the controls as shown; then perform the checks in
table 6-22 and take the waveform measurements.
Refer to figure 6-31.
o
±
10 mVdc
R57/RT1 junction - 2.3
±
.02 Vdc
U6 pins 2 and 3, U5 pins 2
and 6
Test Point Desired Results
Table 6·21. Sine Converter Checks
Figure 6·30. Sine Converter Waveforms
U6 PIN 6
-O.4V
-O.S5V
+2.5V
-2.5V
U4 PIN 8
U4 PIN 1
+O.S5V
+O.4V
-O.4V
-O.7V
U4 PIN 5
+O.7V
+O.4V
U4 PIN 4
-O.25V
+O.25V
~:~:----
( : 'Y--!- ~- ---
I
I
I I I
~----
I
I
--~-I----
I I
1
J
I
I
I I I
~-=-==~
I
I I
:\ : k--:-" - ---
: ~__!~
.!.---
I
I 1 '
I I I I I
1 1 I
I
I
~----
I 1 -, I ' -,----
1
I
I 1 I
VWI\.T~==
U4 PIN 9
Figure 6·29. Mod Gen Sync Out Amp.
Waveforms
II 1----
+O.8V
_J
L.J
-3.0V
1
I
1 1
--, r-l------
+5.0V
LJ L-____
O.OV
03 COLLECTOR
03 BASE
Figure 6·28. SquareWave Limiter Waveforms
r1
r-t-----.+
3.
OV
_J
LJ
L_----3.0V
I I
I I
rI
rI--
---+3.5V
----f ~
L-_---
2.5V
I
I
r-l f1---- -
+2.5V
_J
LJ L-----
3.
5V
, 1
I I
r-1
r=r:
---+2.8V
_J
LJ
L.__ - .-
2.8V CRS ANODE
CR7 CATHODE
CR5 ANODE
CR5 CATHODE
Figure 6·27. Modulation Generator Waveform
+3.0V
-3.0V
+2.SV
-2.SV
+4.2V
-3.8V
+ 10.0V
-3.0V
+3.0V
-10.0V
+2.5V
-2.5V
+2.8V
-2.8V
+2.4V
-3.5V
+3.5V
-2.4V
__r1__Jl_
I ,
1
~
I
I
I
~
I
1 1
I l I
~
I I I
I I I
~
I
1 1
, 1 I
~
I
I
I
I I ,
~
, I
i
I I
1
_n___ru
I
I ,
1
I I
.rt.rt.r
U13 pin 6
U13 pin 3
U3 pin S
U3 pin 8
U3 pin 5
U12 pin 3 and 6
U3 pin 4
U3 pin 3
U3 pin 9