11
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If you're building a KAT100-1, skip the remaining steps
in this column. Connectors P3, P4, and P6 are only supplied
with the KAT100-2 kit.
Install the 10-pin, dual-row (5x2) male connector at P4, but
do
not solder yet
. Figure 3a shows P4 as viewed from right side of the
board. The plastic part of the connector must be on the
top
side of the
board, with the long end of the pins pointed up. The short ends are
inserted into the board.
(a)
P4
(b)
P4
Pin 4
1
C46
Figure 3
Solder just one pin of P4.
Note:
P4's plastic body can melt if too
much heat is applied. Limit soldering time to 2 to 3 seconds.
Examine P4 closely. If it is not flat against the board, re-heat the
soldered pin while pressing down on the plastic body of the connector.
Solder the remaining pins of P4. Do not trim the leads.
Cut pin 4 of P4 as indicated in Figure 3b, as close as possible to the
connector's plastic body.
Locate a 2-pin, high-current male connector (0.156" lead spacing)
for use at P3.
Install P3 at its indicated location on the right side of the board,
but
do not solder yet
. Make sure the polarizing tab is oriented as
indicated by its component outline.
Press P3 down until it is flat against the board, then solder.
Install P6 (in the back-right corner)
in the same manner as P3.
Install the 40-pin IC socket at U1. Orient the socket so the end
with the open notch is toward the right edge of the board.
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In the following steps you'll be installing connectors at
the back edge of the PC board. These connectors must be
installed correctly in order for the rear panel to fit onto the
board.
Figure 13 (page 20) shows how the rear-panel connectors will
appear once installed.
Install the DC input jack, J1, at the back edge. The 3 leads on the
jack must be lined up with the slot-shaped holes in the component
outline. If the holes are a tight fit, press firmly until the connector
snaps into position, flat against the board. Solder all three pins.
Install the AUX RF jack, J2 (BNC), in the back-right corner.
Solder one of the large ground mounting pins first. If J2 then appears
to be tilted or twisted, reheat this ground pin while pushing J2 down
onto the board. Once it is seated properly, solder the remaining pins.
Install J3, the 9-pin "D" connector, as indicated by its component
outline.
Do not solder yet
.
Solder one of the 9 pins (near the center). Examine J3 closely. If
it is not flat against the board, re-heat the soldered pin while pressing
down on the connector. Then solder the remaining pins.
Solder J3's mounting tabs. Use a minimum of solder (do not fill
the entire hole).
Locate screw terminal E1. If it was supplied with a screw, remove
it. The screw will not be used.
Place E1 in its indicated position, with the threaded hole facing
the rear edge of the board.
Solder just one pin.
CAUTION: This
part will get hot; don’t touch it with your finger while soldering.
If necessary, reheat the soldered pin of E1 and adjust it so that all
four pins are pressed down on the board as far as they'll go. Then
solder all pins.
