A6
AM
DE~ODULIATOR ASSEMBLY
r-!
TO
COUNTER
COUNTER IF
IF
OUT
i
BUFFER
BD5
FM OUTPUT 'FM IN
260
kHz
'IF
IN TP2 PRECISION CHARGE-COUNT DISC
OUT
j:
I
STAGE
1
STAGE 2 STAGE
3
TP3 SWITCH
b
4'
TP5
I
I
I
I
I
I
'AM
IN
260
kHz
I
EL?
J!
r
-
-
-
I
I
I
I
I--
--
---
I
BD4
TO FROW AUDIO
DE-EMPHASIS AND
OUTPUT ASSEMBLY
BD2
I
STOP SWEEP
-
IF PEAK
<J2>
TO
LO
0
E T E
c
TO R
IF PRESENT STATUS T
0
/
F
R
0
M
.I
IOPTION
030
SERIES ONLY)
A55
IF CHANNEL FILTER ASSEMBLY: SERIAL PREFIX
26421
AND ABOVE
(OPT
030
SERIES ONLY)
A54
IF AMPLIFIER AND DETECTOR ASSEMBLY:
A71
IF AMPILFIER AND DETECTOR ASSEMBLY:
2642A
AND ABOVE.
a
SERIAL PREFIX
2314A
TO
2636A.
-- --
PROGRAWMABLE IF ATTENUATION
I
I
I'
AND AMPLIFICATION
I
ATTENUATOR
AWPLIFIER ATTENUATOR
AWPLIFIER ATTENUATOR
2
2
3
3
4
W32
.
0
dB
a-
_.
I I I
I
I
I
I
,72
IF AMPLIFER AND DETECTOR ASSEMBLY: SERIAL PREFIX
2642A
AND
ABOVE.
<.17>
1
A72
CHINU FATQR ASSEMBLY
- -
--
--
7
I
FIRST
I
I
CHANNEL
1
CHANNEL
1
CHANNEL
1
I
FROM
BUFFER
BD2
&
--1
A50
AM
&LI&ATOR ASSEMBLY
--
I
-
-
r
AMPLIFIER
BD2
I
I
10
MHz
I
LIWITER
I
I
-'I
17
SECOND
CHANNEL
1
I
I
CHANNEL
IF
RMS
OUTPUT
SELECT
SECOND SWITCH
CHANNEL
2
FILTER
I
I
CURRENT
SOURCE
A
CURRENT
0
E
C
0 0
E R
LATCH
lo
kH2
MODULATION
I
OSCILLATOR
I
--
---
A51
FM CALIBgTDR ASSEMBLY
- -
TRAPEZOID
I
I
I
10
MHz
,
-.
.-
.
.
BD5
BD5
. .
BUS FROM
10
kHz
DECODER BUFFER
LATCH E
S
I
0
E
C
0 0
E R
,
'2
TO
V
0
L
T
ME
T
E R
1-
BD4
I
I/
II
I
I
-'-FM SOURCE-
I
I.
1
I
II
I.
I
'
kBD5
INSTRUMENT BUS
I
FROM CONTROLLER
I
BD3
BE-7
30
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