Ramsey Electronics BS1 Manual de instrucciones descargar pdf (Pagina 19)

SG7• 19

side. Do a trial positioning in order to understand how the jack is

connected. Notice that the edges of the two jack lugs will be perpendicular

to the PC board surface.

 57b. The PC board areas to which the two outer jack lugs are to be

soldered may be covered with a green coating called solder mask. If so,

use a knife blade to gently scrape away the mask from the area shown

down to bare shiny copper.

 57c. "Tin" both copper areas with solder. A moderate buildup of solder is

OK and will make installation of the jack easier. The two jack lugs may be

tinned as well.

 57d. After one more "fitting" by eye, solder ONE of the jack lugs in place.

Re-melt and adjust as needed to get a good square positioning.

 57e. With the jack looking good and secured at one lug, do a good job of

soldering the other connection. Then, touch up the first connection if

needed. Absolutely excellent solder joints are needed since these

connections are the mechanical strength of J3's installation.

Wiring of the SG7 Speed Readout Unit PC board is now complete, but PLEASE

follow our direction steps for installing this board in the custom case and panel

supplied.

ASSEMBLING THE CASE AND PC BOARD:

 1. Mount the small red plastic lens filter. The red lens should neatly cover

the LED window and is secured with a piece of tape to the inside of the

case shell. Be sure the tape does not cover any part of the window area.

We do not supply the tape, simply use a bit of scotch tape or electrical tape.

 2. BEFORE peeling the backing off from the front panel decal, lay it in place

to get an idea of the best positioning.

 3. After removing the backing, lay one of the long edges in place on the

case, making sure that the fit is straight and square. Then lay it down

completely and gently smooth it into place. Do this carefully, since a second

try would be difficult.

 4. Select the four 4-40 screws and four standoffs. These screws go through

the front panel decal and into the standoffs. Make neat starter holes

through the decal using a sharp point such as a nail and mount the standoff

spacers to the case front.

 5. Mount the PC board to the threaded spacers, using the remaining four

machine screws. The board should rest evenly on the spacers with no

component pressing hard against the case.

 6. Set aside the back shell and case screws until after initial tests and

adjustments are completed.Note: If you wish extra protection for the front

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Ramsey Electronics BS1 Manual de instrucciones Pagina 19