
Chapter 10 297
Block Diagrams
Audio Analyzer Section
Figure 10-9 Measurement Assembly, A2A33
MEASUREMENT ASSY.
DIGITAL
CONTROL
STATE-
MACHINE
SCOPE
RAM
A-D
TRIGGER
LEVEL
ANALOG
MEAS
CNTR
MUX
X
AUDIO INPUT MEAS
+5VA
CURRENT SENSE
UPCENV_DIAG
G_REF_DIAG
DNCNV_DIAG
SPEC ANAL
LOIF_DIAG
RI_VM_ID
AUDIO MEASURE
LFS1
LFS2
500MHz DIAG
1000MHz DIAG
+12 CRT
+9 V
+5 VD
+40 V
+12.4 VA
OS DIAG
VOLTMETER MUX
20 MHz
FROM REF
SECT
+10 dBm
GND
700 kHz IF CNT
GREF_CNT_INOUT
AUDIO CNT
MEAS_SBRC
.
.
-
2
TRIG
MUX 2
TRIG
MUX 1
TRIG-
GER
S
C
O
P
E
M
U
X
GAIN
&
OFF
SET
SIGNAL TRIGGER
FROM SIG. SRC
& ANAL.
GENREF_SCP_TRIGGER
EXT. TRIGGER
0 TO 5V (R.P.)
TRIG_OUT
TRIG_IN
SA_SCP
SA_SCP2
SA_SCP3
DET_LO
IN_VOLT
AUDIO OUTPUT
TO SPECT.
ANALYZER
FROM RFIO
SWP STRT SG
SWP STRT RCVR
SWP STRT SA
+5
+5 VA
+12.4
-12.4
D
B
A
16
7
5
I/O FROM
CONTROLLER
(FROM MEMORY_SBRC)
A2A33
(FROM AUDIO ANALYZER 2)
CRT_MEAS_BUS
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