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March 1999
Part No. 001-2009-600
10-35
INTERFACE ALARM CARD SCHEMATIC
FIGURE10-40
D0 46
D1 14
D2 45
D3 13
D4 44
D5 12
D6 43
D7 11
A12 36
A13 4
A14 35
A15 3
A16 34
A17 2
A18 33
A19 1
MREQ 15
23A16
A
18
C
D
22
21
20
A17
A18
A19
U501
74HC154
19
G2
G1
D3
4
18
G1
19
O3
23A12
A
C
D
22
21
20
A13
A14
A15
B
B
U500
74HC154
ADDRESS LATCH
19
G2
O6
7
O2
O5
O7
O4
O1
3
6
8
5
2
ADDRESS LATCH
U518
74HC574
D1
D0
D1
D2
D3
D4
D5
D6
D7
D2
D3
D4
D5
D6
D7
D8
11
CLK
9
8
7
6
5
4
3
2
THERMAL SENSOR 56
U506
ADC0804
R509
10k
R508
10k
C502
.1
C503
150pF
R510
10k
Vcc
20
INTR
5
VREF
V IN -
GND A
GND D
CLK IN
CLKR
9
7
8
10
4
19
VIN+
DO
D1
D2
D3
D4
D5
D6
D7
6
18
17
16
15
14
13
12
11
D0
D1
D2
D3
D4
D5
D6
D7
1
CS
P500
31
32
63
64
RD 47
WR 48
2
3
RD
WR
57
S50
8
U508B
R520
2.7k
43
CR503
+5V
+5V
+5V
19
Q1
U508C
R516
2.7k
65
CR502
18
U508A
74HC906
R517
2.7k
21
CR505
17
U508E
R519
2.7k
10 11
CR504
15
U508D
R518
2.7k
89
CR500
16
Q2
Q3
Q5
Q4
Q7
1
OC
Q6
Q8
14
12
13
U517
74HC573
Q1
D0
D1
D2
D3
D4
D5
D6
D7
Q2
Q3
Q4
Q5
Q6
Q7
Q8
2
D1
12
13
14
15
16
17
18
19 11
C
EN
8
7
5
D7
D6
D4
D3
1
OC
D8
D2
9
3
4
R507
10k
R513
10k
R514
10k
R559
10k
D5
6
R539
100k
U505
74HC574
D1
D0
D1
D2
D3
D4
D5
D6
D7
D2
D3
D4
D5
D6
D7
D8
9
8
7
6
5
4
3
2
Q1
Q3
Q4
Q5
OC
11
CLK
1
Q6
Q2
Q7
Q8
12
13
14
15
16
17
18
19
12 RF MUX 1 INH
13 RF MUX 2 INH
14 RF MUX 3 INH
15 PC STR
16 HS CS EX
26 SYN CS EX
25 HS CS RX
10 SYN CS RX
11 WO 1
1 GROUND
9 AC FAIL IN
P501
U504
74HC574
D1
D0
D1
D2
D3
D4
D5
D6
D7
D2
D3
D4
D5
D6
D7
D8
9
8
7
6
5
4
3
2
Q1
Q3
Q4
Q5
OC
11
CLK
1
Q2
Q7
Q8
12
13
15
16
17
18
19
29 RF DATA 1
30 RF DATA B
31 RF DATA C
32 RF DATA
8 RF CLOCK
23 AC FAIL OUT
24 WO 2
Q6
14
R543
10k
R544
1k
CR533
15V
CR534
15V
+5V
U508E
74HC906
12 13
7 EXT REQ 1
C520
.1
+
C507
10
+
C505
10
R505
2k
R570
1k
C501
.015
+
C506
10
+
C504
10
U519
SAG04AD
IFA D1
1
RSSIO
5
15
14
12
10
11
IFA D2
IFA OUT
LIM IN
LIM D2
LIM D1
IFA IN
MUTE IN
16
3
R575
82k
+
U509A
3403
1
3
2
R503
5.1k
+
C509
1
+
U509B
3403
7
5
6
U507B
3
4
5
U507A
U507D
1
2
13
11
10
12
J500
+
C510
33
+
U509C
3403
9
10
8
R573
5.1k
C528
.01
+
C524
10
R571
10k
R572
16k
+12V
R574
51k
U507C
9
6
8
28 A D LEVEL
+
C508
33
+8V
+5V IN 28
+5V IN 29
+5V IN 60
+5V IN 61
SOURCE
Z501
+
C522
47
+5V
C521
.01
R515
1k
CR501
+15V
FILTERED 26
+15V
FILTERED 58
+15V
L501
+
C530
220
C529
.01
FILTERED
R578
2.7k
CR525
+15V
R575
2.7k
CR523
+15V
ACCESSORY
ACCESSORY 24
ACCESSORY 25
+15V
+15V
+15V
ACCESSORY
F501
1A
CR526
+
C532
1000
C531
.01
+15V
FILTERED
ALARM 2 OUT+ 20
14
1
8
7
2,1
3
6
+15V
Q501
3658
K501
R524
4.7k
R532
4.7k
+5V
14
1
8
7
2,1
3
6
+15V
Q500
3658
K500
R527
4.7k
R535
4.7k
+5V
ALARM 2 OUT- 52
ALARM 1 OUT+ 19
ALARM 1 OUT- 51
-5V IN 27
-5V IN 59
+15V IN 30
+15V IN 62
-5V
R577
1k
CR524
C538
.01
Z500
+
C523
47
+15V
C511
.01
+15V OUT
J502
U503
74HC574
D1
D0
D1
D2
D3
D4
D5
D6
D7
D2
D3
D4
D5
D6
D7
D8
11
CLK
9
8
7
6
5
4
3
2
15
Q5
14
17
16
Q6
Q3
Q4
Q7
1
OC
Q8
13
Q2
18
Q1
19
14
1
8
7
2,1
3
6
+15V
Q502
3658
K502
R521
4.7k
R529
4.7k
+5V
1 ALARM 3 OUT+
17 ALARM 3 OUT-
14
1
8
7
2,1
3
6
+15V
Q503
3658
K503
R500
4.7k
R501
4.7k
+5V
2 ALARM 4 OUT+
18 ALARM 4 OUT-
R557
10k
R556
10k
+5V
WO 501
WO 502
12
+
U514A
LM2904
1
2
3
R523
10k
C534
100pF
R522
10k
C536
.1
R530
10k
R531
4.32k
R522
10k
+
U514B
LM2904
7
6
5
R526
10k
C535
100pF
R533
1k
+5V
R534
1M
C537
.1
CR531
15V
CR534
15V
R537
1k
4
5
6
19
20
21
27 I/O 13
WO 512
WO 513
WO 514
WO 515
WO 516
WO 517
WO 518
22 BUF RX WBAND
3 RX WBAND
U522
78L12
+
C525
10
+12V
C539
.01
+
C527
.1
+15V
31
2
U523
78M08
2
13
SOURCE
+
C526
1
+8V
SOURCE
C512
.01
+5V
C513
.01
C514
.01
C515
.01
C516
.01
C517
.01
C518
.01
C519
.01
C500
.01
D0
D1
D2
D3
D4
D5
D6
D7
U521
74HC573
Q1
Q2
Q3
Q4
Q5
Q6
Q7
Q8
12
13
14
15
16
17
18
19
1
OC
D1
D2
D3
D4
D8
D7
D6
D5
5
4
9
8
7
6
32
R545
10k
R549
10k
R550
10k
R551
10k
R563
10k
CR535
4.3V
R552
10k
R564
3.9k
CR534
15V
CR533
15V
WO 505
WO 504
WO 503
U520
4N35
4
5
6
1
2
R536
10k
1
2
3
4
8
7
6
5
R528
1.2K
S500
CR507
CR506
R502 430
R541 200
+5V
+15V
5
37
P500
ALARM 1 IN +
ALARM 1 IN -
+5V
U510
4N35
4
5
6
1
2
R562
10k
1
2
3
4
8
7
6
5
R555
1.2K
S501
CR509
CR508
R548 430
R569 200
+5V
+15V
6
38
ALARM 2 IN +
ALARM 2 IN -
+5V
10
EXT REQ 2
U513C
CR533
5.1V
R504
1K
3
2
1
U511
4N35
4
5
6
1
2
R561
10k
1
2
3
4
8
7
6
5
R554
1.2K
S511
R547 430
R568 200
+5V
+15V
7
39
ALARM 3 IN +
ALARM 3 IN -
+5V
J503
CR511
CR510
U513B
CR528
5.1V
R506
1K
3
2
1
U512
4N35
4
5
6
1
2
R560
10k
1
2
3
4
8
7
6
5
R553
1.2K
S503
R546
430
R567 200
+5V
+15V
8
40
ALARM 4 IN +
ALARM 4 IN -
+5V
J504
CR513
CR512
34
5
10 11
12
P504
P503
+15V
R558
10k
Q505
3616
Q504
3616
R511
20k
R512
10k
CR529
15V
CR530
15V
9
SQUELCH ENABLE
1
2
3
4
J505P505
SQUELCH
ENABLE OUT
INVERTED
NON-INVERTED
U503 CONTROL NON-
INVERTED
NOTES:
1. ALL RESISTORS ARE IN OHMS AND ALL CAPACITORS IN
MICROFARADS UNLESS OTHERWISE SPECIFIED.