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Page 24
FIG. 2.13
CHAPTER TWO
SECTION 2.1
MOUNTING THE EHU’S ON THE BOOM (continued)
EHU WIRING
BLACK
RED
GREEN
WHITE
BLUE
BROWN
6 Pin Header Wiring Sequence
(EHU’s with Relays)
BLACK
RED
GREEN
WHITE
4 Pin Header Wiring Sequence
(EHU’s without Relays)
TERMINAL PLUG
TERMINAL HEADER
FIG. 2.10
FIG. 2.11
FIG. 2.12
FIG. 2.14
Trim approximately 1.5 inches of the outer jacket of the control cable (4 or 6 wire, depending on which
EHU). Remove the shield material, the support thread and cut the ground wire off as shown in
figure 2.10
.
Attach electrical tape at the end of the trimmed control cable jacket so that there is no chance for a short.
Remove 0.25 inches of the insulation from each of the individual 22 AWG wires, leaving bare copper. Tin-
ning of the copper wire ends with solder is not required but may be helpful in keeping the ends together
while attaching the control cable wires.
Figure 2.11
shows the control cable should look like when you are
finished with the trimming. Dip each of the copper wires into connector protector before inserting into the
terminal plug.
Figure 2.12
shows what the connector protector will look like.
The terminal header assembly consists of the terminal header and the terminal plug as shown in
figure
2.14
. The plug is shipped loosely attached to the header. Remove this plug when wiring and firmly plug
back in when completed.
Follow the wire sequence in
figure 2.14
for each EHU. The 6 pin wiring sequence is for the Driven, Director
1 and Director 2 elements, and the 4 pin wiring sequence is for the Reflector and Director 3 elements.
Be
careful to ensure hat there are no bare wires protruding out from the terminal clamps, to avoid potential
shorts.
The wiring sequence for each EHU is also imprinted on the PCB that the terminal header is mounted on
(located inside the EHU), as shown in
figure 2.13
. Pay no attention to the second row of imprinted text,
these pins are for use in the manufacturing of the board itself and are of no use to you.
Figure 2.13
shows
a blue line crossing out the text in question. The yellow circle shows the correct wiring sequence.