SOUTHERN AVIONICS COMPANY
Model SA100 Dual2-58 Theory of Operation, Radiobeacon
Figure 2-42. SA RF Motherboard Schematic
VMOD
RFVRFV
LVLV
AC HV
INTEL
CARR IN CARR IN
VSAM
VSAM
ISAM
CARR IN
DCSDI
LV
ISAM
VSAM
INTEL
SHTDN
EXCV
DCSDI
ISAM
TSAM
INTEL
AC HV
VSAM
TSAM
SHTDN
RFV
EXCV
CARR IN
TSAM
SHTDN
VMOD
TSAM
VSAM
ISAM
RF OUT
RFL
RF GND
RF GND
RF OUT
RF GND
FWD
RFL
MOD
LV
RF GND
AC HV
FWD
MOD
HV CTRL
AC HV
NOTES:
1. THIS DWG NO. SEP30000 REV. B.
2. TITLE: SA RFMB PCB SCHEMATIC
3. ASSEMBLY DWG NO. SAP30000
4. ALL CAPACITORS IN uF, UNLESS NOTED.
5. * CONNECTOR PIN SIGNAL NAMES MARKED WITH AN
ASTERISK DO NOT APPEAR ON THE CORRESPONDING
DAUGHTER PCB; THE SIGNALS ARE MERELY ROUTED
THROUGH THE PINS TO SIMPLIFY PCB LAYOUT.
6. ** C2, C3 FACTORY SELECTED - IF NEEDED.
297 - FILTER PCB
296 - SPA PCB
298 - DMOD PCB
303 - DC PCB
(RF OUT - TO FLTR)
(HV IN)
*
**
*
*
*
*
*
*
*
*
*
(HV OUT)
*
*
*
(DC HV)
**
*
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
XA1
52000002
XA1
52000002
W1W1 W3W3
W2W2
1
2
3
4
TB2TB2
W6
FWD
W6
FWD
C3
**
C3
**
C2
**
C2
**
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
XA2
52000000
XA2
52000000
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
XA3
52000000
XA3
52000000
W8
MOD
W8
MOD
W4W4
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
XA4
52000000
XA4
52000000
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
TB1TB1
1
2
TB3TB3
C1
.001
C1
.001
W7
RFL
W7
RFL
W5W5
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