Alstom SHPM 101 - Zone 3 Comparators

SERVICE MANUAL R5888C
QUADRAMHO Chapter 2
Appendix A
Page 19 of 71
Figure 19: Zone 3 comparators (Lenticular)
+5V
0V
(V+IZ)AZ3
Shift
register
Shift
register
Shift
register
Shift
register
Shift
register
Shift
register
Shift
register
(V+IZ)ABZ3
(V+IZ)BZ3
(V+IZ)BCZ3
(V+IZ)CZ3
(V+IZ)CAZ3
(V+IZ)ABZ6
Comparator
AZ3
Comparator
ABZ3
Comparator
BZ3
Comparator
BCZ3
Comparator
CZ3
Comparator
CAZ3
Comparator
ABZ6
(V–IZ)AZ3
(V–IZ) – (180– φ)
(V–IZ)ABZ3
(V–IZ)AZ3
(V–IZ)ABZ3
(V–IZ)CZ3
(V–IZ)CAZ3
(V–IZ)ABZ6
(V–IZ) – φ
(V–IZ) – (180– φ)
(V–IZ) – φ
(V–IZ) – (180– φ)
(V–IZ) – φ
(V–IZ) – (180– φ)
(V–IZ) – φ
(V–IZ) – (180– φ)
(V–IZ) – φ
(V–IZ) – φ
(V–IZ) – (180– φ)
(V–IZ) – φ
(V–IZ) – (180– φ)
Clock and
aspect
control
PdA
PdB
PdC
DIC0
PSBZ3
MCK
MCK/5
SC
MRI
Inhibits and
A1
B1
DA1
DB1
INH1
OUT1
DOUT1
OUT2
DOUT2
A2
B2
DA2
DB2
INH9
A1
B1
DA1
DB1
INH1
OUT1
DOUT1
OUT2
DOUT2
A2
B2
DA2
DB2
INH9
A1
B1
DA1
DB1
INH1
OUT1
DOUT1
OUT2
DOUT2
A2
B2
DA2
DB2
INH9
OUT2
DOUT2
A2
B2
DA2
DB2
INH9
MCK/8
φ=68
φ=45