7
Application Notes
The following tables and diagrams depict the wiring logic of the most common use of the
DXE-
FVC-1
Feedline Voltage Coupler controlling the
DXE-RBS-1P
Reversible Beverage System.
These connections apply to the configurations examples in
Figures 5, 6, 9,
and
10
.
When using the
DXE-FVC-1
Feedline Voltage Coupler with the
DXE-RFS
-
2P
Receive Four
Square System and some
DXE-RLS-2
Two Port Receive Antenna Switch configurations, a polarity
reversal is required. This is accomplished by swapping the
POS
itive and
NEG
ative wires on the
DXE-FVC-1
unit for the configuration examples in
Figures 7, 8
and
11
. The polarity information is
clearly noted on each diagram in the small tables labeled "Control Cable Wiring".
BCD Logic
As shipped, with the internal JMP1 set to EXT, a BCD logic uses an ex12 Vdc to switch the
DXE-FVC-1
input in order to control the output. The
DXE-CC-8A
Control Console supplies the
external voltage, referenced to the
GND
terminal. The wiring from the
DXE-CC-8A
to the
DXE-
FVC-1
input according to
Table 1
is shown below using
COM-CW3
three conductor cable.
NOTE:
The
DXE-FVC-1
uses 1/2-wave rectification for the DC control voltages. When
measuring the output using an RMS or average reading DVM, the normal DC output of
the
DXE-FVC-1
will indicate a n/– 6 Volts. The AC voltage will measure 12 Vac.
BCD input voltage control uses only the terminals labeled
POS, NEG
and
GND
. There are four
possible states for switching.
Note:
Logic zero is all terminals open or floating.
DXE-CC-8A
or user +12
Vdc switch
position
+ 12 Vdc
applied to
DXE-FVC-1
POS terminal
+ 12 Vdc
applied to
DXE-FVC-1
NEG terminal
DXE-FVC-1
Voltage
Output
LED On
1
0
0
0 V
●
Neither
●
2
0
+12 Vdc
-12 Vdc
●
Green
●
3
+12 Vdc
0
+12 Vdc
●
Red
●
4
+12 Vdc
+12 Vdc
12 Vac
●
Both
●
Table 1 Default BCD Logic Input and
Resulting Output
The above diagram is the most
common hook up scheme.
Refer to Figures 5, 6, 9 and 10
