SAC SA100, Manual

Page: 69 / 224

SOUTHERN AVIONICS COMPANY
Model SA100 Dual 2-39 Theory of Operation, Radiobeacon
Figure 2-25. AMTR1 PWB Diagram
AUD SHTDN +12V SDO RFL FWD
AUD
MOD
+12V
+12V
NOTES 1. THIS DRAWING NO. SEP31100 REV. M. 2. TITLE: METER, SA SERIES PCB SCHEMATIC. 3. ASSEMBLY DWG. NO. SAP31100. 4. ALL RESISTORS 1/4W, UNLESS NOTED. 5. ALL CAPACITORS IN uF, UNLESS NOTED.
POS
1
CONNECTION
C1-1, C2-7
MODE OFF
2 3 4 5 6
C1-2, C2-8 C1-3, C2-9 C1-4, C2-10
RFL FWD READ SET AUD
S1 FUNCTION
SECONDARY POWER ON / OFF
RF POWER ON / OFF
C1-5, C2-11 C1-6, C2-12
3 2
1
4 11
+ -
U1A
1U324000
+ -
U1A
1U324000
C2 0.1 C2 0.1
R12 1K R12 1K
R3 100K R3 100K
R11 10K R11 10K
W4
IN
W4
IN
+
C4 6.8
+
C4 6.8
C1
1 3
C2
4 6 5 2 7 8 9
10 11 12
S1
9S901002
S1
9S901002
R13 10K R13 10K
W2
M-
W2
M-
R2 100K 3/4W R2 100K 3/4W
R7 10K R7 10K
CR1
1D005200
CR1
1D005200
W1
M+
W1
M+
R8 10K R8 10K
R9 10K 3/4W R9 10K 3/4W
R10 12K R10 12K
DS1 1DL17190 (Green) DS1 1DL17190 (Green)
2
1 3
S3
9S901004
S3
9S901004
2
1 3
S2
9S901004
S2
9S901004
1 2 3 4 5 6 7 8 9
10 11 12 13 14
XJ1XJ1
R1 4.7K R1 4.7K
C1 0.022 C1 0.022
R4 100K R4 100K
C5 0.1 C5 0.1
12 13
14
+ -
U1D
+ -
U1D
W3
TUNE
W3
TUNE
C3 1.0 C3 1.0
10
9
8
+ -
U1C
+ -
U1C
5 6
7
+ -
U1B
+ -
U1B
R6 20K 3/4W R6 20K 3/4W
W5
OUT
W5
OUT
R5 10K 3/4W R5 10K 3/4W