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e. Double-check the resistance values of each of the installed resistors (18). Set your digital
multimeter to the “ohms” or “resistance” setting, and measure across all of the resistors.
Compare the measured value to the listed value in Table 1 and in Figure 3. Make sure they
are all correct (within 1%) before moving on!
4. Diode (D1): Diodes are polarized; it matters which lead goes in which hole. You will notice one
end of the diode body has a white stripe around it (19). Our rule for installing diodes goes like
this:
WHITE STRIPE = SQUARE PAD
NO STRIPE = ROUND PAD
Gently bend the leads like you did for the resistors (19). Place both diodes in their locations on
the board (21). Make sure they are installed in the correct orientation; otherwise your Altura
won’t work. Bend, solder and clip the leads (20).
19
20
21
5. Crystal Oscillator (Y1): Place the crystal in the Y1 position on the PCB. Bend the leads out on
the bottom; solder and clip the leads.
22
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