AMERITEC AM-48 - Figure 9-1. Simplified Block Diagram of the AM-48

Circuit Diagrams (18-0015) AM-48 Test Set
0015-S099-2
FILT
HOLD
SEND
MIC
M
U
X
M
U
X
M
U
X
M
U
X
M
U
X
M
U
X
M
U
X
2W
4W
T
R
RECEIVE
CONTROL
MEMORY
INPUT/OUTPUT
GENERATOR
MICROPROCESSOR
MICROPROCESSOR
FREQUENCY
COUNTER
3 LEVEL
IMPLS DET
DROPOUT
DETECTOR
GAIN
CMSG
NTCH
AMP RMS
PK
AV
AV
4HZ
20HZ
300HZ
P/P
V/F
FWR
3K
15K
PROG
PAR
NOISE-WEIGHTING
FILTERS
BP
HIT DET
PHASE LOCKED
LOOP 4/20 HZ
T1
R1
<MON SND>
<OFF>
<2W>
<4W>
<MON
RCV>
SKR
DISPLAY
KEYPAD
SWITCHES
SW
14
SW3
<DAMP>
SW10 AUTO
RANGE
AMP
PHASE
HIT DET
Figure 9-1. Simplified Block Diagram of the AM-48