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Fader Module

Two fader modules are present in the prototype control board. They are identical boards with different GAL programming and jumper settings. Figure 71 shows the silkscreen/assembly layer for the fader board. Table 2 shows the bill of materials for a single fader board. Figures 72 and 73 show the top and bottom routing layers, respectively.

**Figure 71:** Fader module PCB, silkscreen/assembly drawing.
$\begin{figure} \psfig{file=pcb/fade-silk.eps,width=5.5in,height=6.5in} \end{figure}$

Table 2: Fader module, bill of materials.

REFDES	QTY	DESCRIPTION
R1 - R8	8	ALPHA 500K slide potentiometer
R9 - R24	16	300 ohm 1/8W
C1	1	10uF electrolytic
C2 - C5	4	0.1uF monolithic
D1 - D8	8	Green T1-3/4 LED
D9 - D16	8	Red T1-3/4 LED
U1	1	GAL16V8
U2, U3	2	74LS373
U4	1	CD4051
J1	1	20-pin DIP header
J2	1	10-pin DIP header
J3	1	16-pin DIP header or wire jumper
J4	1	4-pin 0.156in. power connector

**Figure 72:** Fader module PCB, component-side routing.
$\begin{figure} \psfig{file=pcb/fade-top.eps,width=5.5in,height=6.5in} \end{figure}$

**Figure 73:** Fader module PCB, solder-side routing.
$\begin{figure} \psfig{file=pcb/fade-btm.eps,width=5.5in,height=6.5in} \end{figure}$

Next: Output Assign Module Up: Control Board Previous: Control Board Contents

Steve Richardson 2000-07-06

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