VISTEK V1693 dual changeover switch
6
Issue 1
1.3
Functional Block Diagram – BNC Type (Channel A)
LOCAL - 1
LOCAL - 2
INPUT 1
INPUT 2
LOCAL
REM OTE
REM OTE
RELAY 3
INPUT 2
SELECTED
INPUT 1
SELECTED
COM MON
OPTO-
ISOLATED
CONTROL
INPUT
RELAY 4
LOCAL
SELECTED
REM OTE
SELECTED
COM MON
DART
DART IF
CONTROL A
ACTIVE
LO
ACTIVE
HI
FP SW ITCH DISABLE
JP1
JP2
+12V
0V
JP3
0V
JP6
JP7
JP5
CON
REV
INPUT
A1
OUTPUT
A
50R
RELAY 1
RELAY 2
INPUT
A2
RELAY COIL
OPERATED OK?
POWER
FRONT PANEL
SW ITCH (SW 1)
0V
0V
75R
600R
HI Z
JP8
JP9
JP10
JP11
0V
0V
