Total Water
Counter Board 0 CT0
Other Components: 'U'

U1 SPROM DIP8

Pin      Signal       Link To
1    XCHECKER9(CT0)   U6.P4
2    XCHECKER6(CT0)   U6.R2
3    XCHECKER10(CT0)  U6.R14
4    XCHECKER8(CT0)   U6.R15
5    GND(CT0)         U2.10
7    VDD(CT0)         U1.8
8    VDD(CT0)         U2.14

U2 SE529 DIP16

Pin      Signal      Link To
1    $1N706(CT0)     C3.1
3    $1N694(CT0)     C19.1
4    $1N691(CT0)     C20.1
6    $1N696(CT0)     C5.2
8    STROBE_O1(CT0)  U2.13
9    $1N812(CT0)     E4.1
10   GND(CT0)        U3.10
11   $1N1136(CT0)    U6.B16
13   STROBE_O1(CT0)  U6.B10
14   VDD(CT0)        U3.14

U3 SE529 DIP16

Pin      Signal      Link To
1    $1N728(CT0)     C6.1
3    $1N739(CT0)     C29.1
4    $1N742(CT0)     C28.1
6    $1N737(CT0)     C10.2
8    STROBE_T1(CT0)  U3.13
9    $1N808(CT0)     E2.1
10   GND(CT0)        U4.10
11   $1N1134(CT0)    U6.B14
13   STROBE_T1(CT0)  U6.B9
14   VDD(CT0)        U4.14

U4 SE529 DIP16

Pin      Signal      Link To
1    $1N763(CT0)     C8.1
3    $1N765(CT0)     C32.1
4    $1N764(CT0)     C33.1
6    $1N761(CT0)     C9.2
8    STROBE_O2(CT0)  U4.13
9    $1N810(CT0)     E3.1
10   GND(CT0)        U5.10
11   $1N1135(CT0)    U6.B3
13   STROBE_O2(CT0)  U6.A7
14   VDD(CT0)        U5.14

U5 SE529 DIP16

Pin      Signal      Link To
1    $1N711(CT0)     C11.1
3    $1N721(CT0)     C18.1
4    $1N723(CT0)     C25.1
6    $1N719(CT0)     C21.2
8    STROBE_T2(CT0)  U5.13
9    $1N806(CT0)     E1.1
10   GND(CT0)        U6.C4
11   $1N1133(CT0)    U6.B2
13   STROBE_T2(CT0)  U6.B7
14   VDD(CT0)        U6.B8

U6 XC4005-6 PG156

Pin       Signal       Link To
A1   DEL_B5(CT0)       U9.17
A2   DEL_B6(CT0)       U9.18
A3   XCHECKER3(CT0)    Z1.3
A5   XCHECKER11(CT0)   JTST.11
A6   $1N957(CT0)       U13.6
A7   STROBE_O2(CT0)    U4.8
A8   $1N1033(CT0)      E5.1
A9   $1N1025(CT0)      U12.6
A10  XCHECKER13(CT0)   JTST.13
A11  XCHECKER14(CT0)   Z1.8
A13  WID_A0(CT0)       U7.12
A14  WID_A1(CT0)       U7.13
A15  XCHECKER1(CT0)    U6.A16
A16  XCHECKER1(CT0)    U6.B15
B1   DEL_B4(CT0)       U9.16
B2   $1N1133(CT0)      R26.1
B3   $1N1135(CT0)      R24.1
B4   TRIG_DEL_B(CT0)   U9.3
B5   XCHECKER5(CT0)    Z1.4
B6   XCHECKER7(CT0)    JTST.7
B7   STROBE_T2(CT0)    U5.8
B8   VDD(CT0)          U6.C3
B9   STROBE_T1(CT0)    U3.8
B10  STROBE_O1(CT0)    U2.8
B11  XCHECKER15(CT0)   JTST.15
B12  TRIG_WID_B(CT0)   E8.1
B13  WID_A2(CT0)       U7.14
B14  $1N1134(CT0)      R25.1
B15  XCHECKER1(CT0)    JTST.1
B16  $1N1136(CT0)      R23.1
C1   DEL_B1(CT0)       U9.13
C2   DEL_B2(CT0)       U9.14
C3   VDD(CT0)          U6.C14
C4   GND(CT0)          U6.C6
C5   DEL_B7(CT0)       U9.19
C6   GND(CT0)          U6.C8
C7   $1N1031(CT0)      U13.9
C8   GND(CT0)          U6.C11
C9   $1N1034(CT0)      E6.1
C10  $1N1036(CT0)      U12.9
C11  GND(CT0)          U6.C13
C12  WIDTH_A(CT0)      U7.10
C13  GND(CT0)          U6.F3
C14  VDD(CT0)          U6.H3
C15  WID_A4(CT0)       U7.16
C16  WID_A7(CT0)       U7.19
D3   DEL_B3(CT0)       U9.15
D14  WID_A3(CT0)       U7.15
D15  WID_A5(CT0)       U7.17
E1   $1N947(CT0)       U13.2
E2   DEL_B0(CT0)       U9.12
E3   RESET_DEL_B(CT0)  U9.4
E14  WID_A6(CT0)       U7.18
E16  $1N942(CT0)       U12.2
F1   LATCH_B(CT0)      U8.2
F2   TRIG_WID_A(CT0)   E7.1
F3   GND(CT0)          U6.F14
F14  GND(CT0)          U6.H2
F15  RESET_WID_A(CT0)  U7.4
F16  DEL_A0(CT0)       U10.12
G1   WID_B6(CT0)       U8.18
G2   WID_B7(CT0)       U8.19
G3   RESET_WID_B(CT0)  U8.4
G14  DEL_A1(CT0)       U10.13
G15  DEL_A2(CT0)       U10.14
G16  DEL_A3(CT0)       U10.15
H1   WID_B5(CT0)       U8.17
H2   GND(CT0)          U6.J14
H3   VDD(CT0)          U6.H14
H14  VDD(CT0)          U6.P3
H15  XCHECKER12(CT0)   Z1.7
H16  DEL_A4(CT0)       U10.16
J1   WID_B2(CT0)       U8.14
J2   WID_B3(CT0)       U8.15
J3   WID_B4(CT0)       U8.16
J14  GND(CT0)          U6.L3
J15  DEL_A5(CT0)       U10.17
J16  RESET_DEL_A(CT0)  U10.4
K1   WID_B1(CT0)       U8.13
K2   WIDTH_B(CT0)      U8.10
K3   WID_B0(CT0)       U8.12
K14  DEL_A7(CT0)       U10.19
K15  TRIG_DEL_A(CT0)   U10.3
K16  DEL_A6(CT0)       U10.18
L1   XCHECKER16(CT0)   Z1.9
L2   ~Expintr(CT0)     SB1.54
L3   GND(CT0)          U6.L14
L14  GND(CT0)          U6.N3
L15  ~ADDRESS1(CT0)    SB1.2
L16  LATCH_A(CT0)      U7.2
M3   ~Expack(CT0)      SB1.56
M14  ~ADDRESS3(CT0)    SB1.4
M16  ~ADDRESS0(CT0)    SB1.1
N1   ~CMDENBL(CT0)     SB1.52
N2   ~ADDRESS15(CT0)   SB1.16
N3   GND(CT0)          U6.P6
N14  ~JUMPERS0(CT0)    JP0.2
N15  ~ADDRESS4(CT0)    SB1.5
P1   ~CMDSTRB(CT0)     SB1.50
P2   F16KHZ(CT0)       U11.2
P3   VDD(CT0)          U6.P13
P4   XCHECKER9(CT0)    JTST.9
P5   ~ADDRESS11(CT0)   SB1.12
P6   GND(CT0)          U6.P8
P7   ~DATA14(CT0)      SB1.35
P8   GND(CT0)          U6.P11
P9   ~Data9(CT0)       SB1.30
P10  ~Data5(CT0)       SB1.26
P11  GND(CT0)          U6.P14
P12  ~ADDRESS7(CT0)    SB1.8
P13  VDD(CT0)          U6.R8
P14  GND(CT0)          U7.8
P15  ~ADDRESS5(CT0)    SB1.6
P16  ~ADDRESS2(CT0)    SB1.3
R1   ~ADDRESS14(CT0)   SB1.15
R2   XCHECKER6(CT0)    JTST.6
R3   ~ADDRESS13(CT0)   SB1.14
R4   ~ADDRESS12(CT0)   SB1.13
R6   ~ADDRESS8(CT0)    SB1.9
R7   ~DATA13(CT0)      SB1.34
R8   VDD(CT0)          U11.1
R9   ~Data8(CT0)       SB1.29
R10  ~Data6(CT0)       SB1.27
R11  ~Data2(CT0)       SB1.23
R13  ~ADDRESS6(CT0)    SB1.7
R14  XCHECKER10(CT0)   Z1.6
R15  XCHECKER8(CT0)    Z1.5
R16  ~Expwr(CT0)       SB1.48
T2   $1N1104(CT0)      E9.1
T3   ~ADDRESS10(CT0)   SB1.11
T4   ~ADDRESS9(CT0)    SB1.10
T5   ~DATA15(CT0)      SB1.36
T6   ~DATA12(CT0)      SB1.33
T7   ~DATA11(CT0)      SB1.32
T8   ~DATA10(CT0)      SB1.31
T9   ~Data7(CT0)       SB1.28
T10  ~Data4(CT0)       SB1.25
T11  ~Data3(CT0)       SB1.24
T13  ~Data1(CT0)       SB1.22
T14  ~Data0(CT0)       SB1.21
T15  ~Exprd(CT0)       SB1.46
T16  ~JUMPERS1(CT0)    JP1.2

U7 AD9501 DIP20

Pin       Signal       Link To
1    $1N652(CT0)       C30.1
2    LATCH_A(CT0)      U10.2
3    DELAY_A(CT0)      U10.10
4    RESET_WID_A(CT0)  U6.F15
5    $1N642(CT0)       C14.2
6    $1N659(CT0)       C12.2
7    $1N658(CT0)       R9.1
8    GND(CT0)          U7.9
9    GND(CT0)          U7.20
10   WIDTH_A(CT0)      C14.1
11   $1N653(CT0)       C39.1
12   WID_A0(CT0)       U6.A13
13   WID_A1(CT0)       U6.A14
14   WID_A2(CT0)       U6.B13
15   WID_A3(CT0)       U6.D14
16   WID_A4(CT0)       U6.C15
17   WID_A5(CT0)       U6.D15
18   WID_A6(CT0)       U6.E14
19   WID_A7(CT0)       U6.C16
20   GND(CT0)          U8.8

U8 AD9501 DIP20

Pin       Signal       Link To
1    $1N609(CT0)       C51.1
2    LATCH_B(CT0)      U9.2
3    DELAY_B(CT0)      U9.10
4    RESET_WID_B(CT0)  U6.G3
5    $1N639(CT0)       C16.2
6    $1N666(CT0)       C17.2
7    $1N663(CT0)       R7.1
8    GND(CT0)          U8.9
9    GND(CT0)          U8.20
10   WIDTH_B(CT0)      C16.1
11   $1N608(CT0)       C59.1
12   WID_B0(CT0)       U6.K3
13   WID_B1(CT0)       U6.K1
14   WID_B2(CT0)       U6.J1
15   WID_B3(CT0)       U6.J2
16   WID_B4(CT0)       U6.J3
17   WID_B5(CT0)       U6.H1
18   WID_B6(CT0)       U6.G1
19   WID_B7(CT0)       U6.G2
20   GND(CT0)          U9.8

U9 AD9501 DIP20

Pin       Signal       Link To
1    $1N654(CT0)       C43.1
2    LATCH_B(CT0)      U6.F1
3    TRIG_DEL_B(CT0)   U6.B4
4    RESET_DEL_B(CT0)  U6.E3
5    $1N644(CT0)       C15.2
6    $1N664(CT0)       C2.2
7    $1N665(CT0)       R6.1
8    GND(CT0)          U9.9
9    GND(CT0)          U9.20
10   DELAY_B(CT0)      U13.13
11   $1N655(CT0)       C47.1
12   DEL_B0(CT0)       U6.E2
13   DEL_B1(CT0)       U6.C1
14   DEL_B2(CT0)       U6.C2
15   DEL_B3(CT0)       U6.D3
16   DEL_B4(CT0)       U6.B1
17   DEL_B5(CT0)       U6.A1
18   DEL_B6(CT0)       U6.A2
19   DEL_B7(CT0)       U6.C5
20   GND(CT0)          U10.8

U10 AD9501 DIP20

Pin       Signal       Link To
1    $1N650(CT0)       C54.1
2    LATCH_A(CT0)      U6.L16
3    TRIG_DEL_A(CT0)   U6.K15
4    RESET_DEL_A(CT0)  U6.J16
5    $1N643(CT0)       C13.2
6    $1N657(CT0)       C7.2
7    $1N656(CT0)       R8.1
8    GND(CT0)          U10.9
9    GND(CT0)          U10.20
10   DELAY_A(CT0)      U12.13
11   $1N651(CT0)       C23.1
12   DEL_A0(CT0)       U6.F16
13   DEL_A1(CT0)       U6.G14
14   DEL_A2(CT0)       U6.G15
15   DEL_A3(CT0)       U6.G16
16   DEL_A4(CT0)       U6.H16
17   DEL_A5(CT0)       U6.J15
18   DEL_A6(CT0)       U6.K16
19   DEL_A7(CT0)       U6.K14
20   GND(CT0)          U11.3

U11 LQXO_4,16.384KHZ TO-5

Pin    Signal     Link To
1    VDD(CT0)     Z1.1
2    F16KHZ(CT0)  U6.P2
3    GND(CT0)     U12.7

U12 54HC14 DIP14

Pin     Signal     Link To
1    $1N894(CT0)   C63.1
2    $1N942(CT0)   U6.E16
5    $1N1003(CT0)  C4.1
6    $1N1025(CT0)  U6.A9
7    GND(CT0)      U13.7
8    $1N1005(CT0)  R18.1
9    $1N1036(CT0)  U6.C10
12   $1N944(CT0)   R20.2
13   DELAY_A(CT0)  C13.1
14   U12_PWR(CT0)  C73.1

U13 54HC14 DIP14

Pin     Signal     Link To
1    $1N908(CT0)   C62.1
2    $1N947(CT0)   U6.E1
5    $1N968(CT0)   C64.1
6    $1N957(CT0)   U6.A6
7    GND(CT0)      C1.2
8    $1N971(CT0)   R21.2
9    $1N1031(CT0)  U6.C7
12   $1N946(CT0)   R19.2
13   DELAY_B(CT0)  C15.1
14   U13_PWR(CT0)  C74.1
[CT0]

[CT0] [Components] [Connectors] [Signals]

Connector pin assignments by Terry Allen.
Web listings compiled by Norton T. Allen October 22, 1998.

(c)1998 Harvard University Atmospheric Research Project