Ramsey Electronics AR2 Bedienerhandbuch PDF herunterladen (Seite 12)

ABM1 • 12

ASSEMBLY STEPS

In ALL PC board assembly steps, our wor

d "INSTALL" always means to do

this:

• Insert the part, oriented or "pointed" correctly, into its holes in the PC

board.

• If helpful, gently BEND the part's wire leads or tabs to hold it into place,

with the body of the part snugly against the top side ("component side") of

the circuit board.

• Solder ALL wires or pins of the part.

• Trim or "nip" all excess wire lengths extending beyond each solder

connection, taking care that wire trimmings do not become lodged in

solder connections.

One of the goals of the ABM1 design was to keep the receiver as small as

possible while trying to stay away from surface mount components. Staying

away from surface mount components makes the kit a lot easier to assemble.

You will notice that we had to use some SMT parts such as the MAR amplifier

and log amplifier IC that only come in a surface mount package. We have

preinstalled the log amplifier component to allow the assembler to keep their

sanity. You will also notice that inductors M1, M2, M3, and M4 are actually

made from foil runs on the circuit board. This means no actual physical parts

exist for these components.

Since part of our goal was to keep the kit small the components are spaced

very closely together. We highly recommend following the assembly

procedure to insure proper installation and identification of all parts and their

locations. Let’s get building and have some fun!

IC INSTALLATION

 Find the circuit board. U2 (one of those pesky surface mount parts) has

been preinstalled for you. It has been mounted on the component side of

the board.

 Find U1, the MAR-1 marked 01. This is the other surface mount part.

This component will be mounted and soldered on the same side of the

board as U2. Mount the MAR-1 so that its dot is on the same lead as the

dot on the circuit board or facing C5. All other components will be

mounted on this side of the board and soldered on the opposite side.

 Install U3, the LMC6482AIN Operational Amplifier IC. It’s located near the

center of the PC board. You’ll see the PC board silkscreen shows a notch

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Ramsey Electronics AR2 Bedienerhandbuch Seite 12