Velleman projects K4305 Assembly instructions - Manual (Page 4)

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4
Assembly
Mount all components onto the PC boards (mount the two boards)
1. JUMPERS
q J1
q J2, mount for BAR mode, do
not mount for DOT mode.
BAR DOT
+3 +3
+2 +2
+1 +1
0dB 0dB
-1 -1
-3 -3
-5 -5
-7 -7
-10 -10
-20 -20
2. DIODES (Check the polarity)
D...
CATHODE
q D1: 1N4148
q D2: 1N4148
q D3: 1N4000… 1N4007
3. ZENER DIODES
(Check the polarity)
ZD...
CATHODE
q ZD1: 6,2V (6V2)