DX Engineering DXE-EC-4 User manual

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BCD Control Console
DXE-EC-4
DXE-EC-4-INS-Revision 1b
DX Engineering 2023
1200 Southeast Ave. - Tallmadge, OH 44278 USA
Phone: [phone] Technical Support and International: [phone]
E-mail: [e-mail]

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Introduction
The DXE-EC-4 is a flexible, 4 position controller used to control the DX Engineering Receive Four Square
series or any other products using a 4 position (3 wire plus ground) BCD control format.
The DXE-EC-4 offers the following features:
Stainless Steel Housing
Non-Skid feet
On-Off toggle switch
Four green LEDs indicate position chosen
Filter capacitors on each line
Internal automatic resettable fuse
Includes a 2.1 mm power plug for +12 Vdc power connection
Front and Rear Panels
On/Off toggle switch Control Wire Feed Through
Four Green LEDs Power Connection
4 Position Rotary Switch
The DC Input used is +12 Vdc. A 2.1 mm power cord is supplied with unit. The wire with the white
stripes is the +12 Vdc.
Outer Connection is GROUND, Center Pin is +12 VDC.
If station power is used, it must be +12 Vdc at 1 amp (fused) minimum. An optional
DXE-PSW-12D1A 120 Vac 60 Hz to 12 Vdc 1 Amp, fused wall transformer supply is
available.
Tools Required
Phillips Head Screwdriver
Wire Stripper
Small Flat Blade Screwdriver
Overall Size

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Interior Connections
1. Open the unit by removing the four (two per side) Phillips head screws to remove the cover.
2. Push the end of the cable through the control wire feed through on the rear of the unit.
3. Connections for the wire are made on the green
header. Loosen each terminal screw until it is
near flush with the top of the connector block as
shown to the right.
4. Strip approximately 1/4" insulation from the
four conductor wire ends as shown to the right.
5. Connect each wire to a terminal by sliding the
wire completely into the wire connection hole. Using a small flat blade screwdriver, tighten the
associated screw until the wire is firmly gripped in place as shown below.
Take caution to ensure just the wire is clamped in place, not the wire's insulation which would cause an open
or intermittent connection. Do not over tighten the screw so much that the wire is cut instead of being firmly
gripped. Use the included Ty-Wrap on the inside of the unit to hold the cable from pulling outward as shown
above.
Control lines (usually BCD ) can normally use good quality CAT5e cable (4 twisted pairs of 24 AWG wire)
for runs up to 1000 feet. Typical DX Engineering BCD control lines requirements are +12 VDC at 25
milliamps. Depending on the number of control lines needed (usually 3 or 4) you can double up the twisted
pairs of CAT5e cable, or use control wire that is at least 22 AWG, allowing runs up to 1500 feet. If you use a
cable with more conductors, it is a good idea to tie the unused conductors to ground. For longer runs of
control cable, use a line loss calculator to ensure you supply the proper control levels needed.
Approximate BCD Control Line Lengths.
Minimum Copper
Wire Gage (AWG)
Length
24
1,000 feet
22
1,500 feet
20
2,000 feet
When connecting the cable to the DX Engineering Receive Four Square (or other unit), ensure your cable is
wired the same way at the other end to avoid un-necessary troubleshooting. Use the chart below to record
which color wire is connected to each terminal connection.

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Connector Wire Reference Chart
G
1 (A)
2 (B)
3 (C)
The selected position will supply the BCD logic voltage as shown in the chart below. H = +12 Vdc output.
Switch Position
BCD Out
1
2
3
4
1 (A)
H
H
2 (B)
H
H
3 (C)
H
H
H
H
Optional Items
COM-CW4 - Four Conductor Cable, Sold per Foot
A high quality, PVC jacketed 4-wire control cable, COM-CW4 consists of 4 #20 AWG stranded copper
conductors. It may be used in a multitude of control cable applications, such as remote switching and
antenna rotators. Sold by the foot - order the length you need.
AC Adapter 12VDC/1000mA - DXE-PSW-12D1A
The DXE-PSW-12D1A is an AC Wall Transformer Adapter to furnish 12 Volts DC at 1000 mA from 120
Vac 60 Hz input, fused output. It features a standard 2.1 mm plug connection for 12 Vdc. Outer connection
is GROUND Center Pin is input for +12 VDC. Ideal separate power source for DX Engineering Antenna
Switch and Transmit Four Square Controllers, NCC-1, TVSU, DXE-MBV-ATU-1 Remote Antenna Tuner
Kit and most MFJ automatic antenna tuners
Technical Support
If you have questions about this product, or if you experience difficulties during the installation, contact DX
Engineering at [phone]. You can also e-mail us at:
[e-mail]
For best service, please take a few minutes to review this manual before you call.
Warranty
All products manufactured by DX Engineering are warranted to be free from defects in material and workmanship for a period of one (1) year from date
of shipment. DX Engineering’s sole obligation under these warranties shall be to issue credit, repair or replace any item or part thereof which is proved
to be other than as warranted; no allowance shall be made for any labor charges of Buyer for replacement of parts, adjustment or repairs, or any other
work, unless such charges are authorized in advance by DX Engineering.
If DX Engineering’s products are claimed to be defective in material or workmanship, DX Engineering shall, upon prompt notice thereof, issue shipping
instructions for return to DX Engineering (transportation-charges prepaid by Buyer). Every such claim for breach of these warranties shall be deemed
to be waived by Buyer unless made in writing. The above warranties shall not extend to any products or parts thereof which have been subjected to any
misuse or neglect, damaged by accident, rendered defective by reason of improper installation, damaged from severe weather including floods, or
abnormal environmental conditions such as prolonged exposure to corrosives or power surges, or by the performance of repairs or alterations outside
of our plant, and shall not apply to any goods or parts thereof furnished by Buyer or acquired from others at Buyer’s specifications. In addition, DX
Engineering’s warranties do not extend to other equipment and parts manufactured by others except to the extent of the original manufacturer’s warranty
to DX Engineering.
The obligations under the foregoing warranties are limited to the precise terms thereof. These warranties provide exclusive remedies, expressly in lieu
of all other remedies including claims for special or consequential damages. SELLER NEITHER MAKES NOR ASSUMES ANY OTHER
WARRANTY WHATSOEVER, WHETHER EXPRESS, STATUTORY, OR IMPLIED, INCLUDING WARRANTIES OF MERCHANTABILITY
AND FITNESS, AND NO PERSON IS AUTHORIZED TO ASSUME FOR DX ENGINEERING ANY OBLIGATION OR LIABILITY NOT
STRICTLY IN ACCORDANCE WITH THE FOREGOING.
©DX Engineering 2023
DX Engineering®, DXE®, DX Engineering, Inc.®, Hot Rodz®, Maxi-Core®, DX Engineering THUNDERBOLT®, DX Engineering Yagi Mechanical®,
EZ-BUILD®, TELREX®, Gorilla Grip®Stainless Steel Boom Clamps, Butternut®, SkyHawk™, SkyLark™, SecureMount™, OMNI-TILT™, RF-
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Specifications subject to change without notice.