Wavetek 193 Instruction Manual page 30

4-4
Figure
4·3.
Sweep/Modulation Generator Block Diagram
SYMMETRY CONTROL
AM SIGNAL TO
FUNCTION SWITCH
MAIN GENERATOR
(FIG 4-1)
TO REAR
ru
MODULATION PANEL BNC
GENERATOR
r
..
SYNC OUTPUT
AMPLIFIER
AMIN
FROM FRONT
PANEL BNC
~
SQUARE
l
CARRIERSIGNAL
WAVE
~
LIMITER
FROM FUNCTION
SWITCH, MAIN-
GENERATOR
(FIG 4-1)
11-
ru ru
+1
4
MODULATION
..
AMPLITUDE
...
.
f-
AMPLITUDE MODULATION
..
MODULATION
NOUT
FUNC .. CONTROL
..
AMPLITUDE r ....-I
..
FUNCTION MODULATION
MODULATION
~
GENERATOR
GENERATOR
SWITCHING
..
LEVEL
MODULATOR
....
..
SWITCH
_...
..
RECEIVER
J
VCG SYSTEM
r+
LOOP
'VIN
r+
r+ (MODE
SHIFTER
MULT
r
~
I--
MODULATOR
SWITCH)
I--
DRIVE NODE
CON FM/SWEEPOUT TO VCG, MAIN
NOUT GENERATOR(FIG.4-1)
SINE
AUXILIARY
1
AUXOUT
4
..
OUTPUT
CONVERTER
I--
TO REAR PANEL
AMPLIFIER
AUX SYNC
FREQ
VERNIER