VISTEK V1693 dual changeover switch
HU-V1693
7
1.4
Functional Block Diagram – BNC Type (Channel B)
LOCAL - 1
LOCAL - 2
INPUT 1
INPUT 2
LOCAL
REM OTE
REM OTE
RELAY 7
INPUT 2
SELECTED
INPUT 1
SELECTED
COM MON
OPTO-
ISOLATED
CONTROL
INPUT
RELAY 8
LOCAL
SELECTED
REM OTE
SELECTED
COM MON
DART
DART IF
CONTROL B
ACTIVE
LO
ACTIVE
HI
FP SWITCH DISABLE
JP14
JP15
+12V
0V
JP16
0V
JP19
JP20
JP18
CON
REV
INPUT
B1
OUTPUT
B
50R
RELAY 5
RELAY 6
INPUT
B2
RELAY COIL
OPERATED OK?
POWER
FRONT PANEL
SWITCH (SW2)
0V
0V
75R
600R
HI Z
JP21
JP22
JP23
JP24
0V
0V
