Velleman К8074 Manual de usuario Pagina 6

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6
Construction
SK1
8. USB connector
TX433
The “ANT” connection will match
the markings on the PCB. Refer
to the illustration or package.
10. Transmitter module
LD1 : 3mm RED 'USB'
LD2 : 3mm RED 'USB'
LD3 : 3mm RED 'RX/TX'
LD4 : 3mm RED 'ON'
Mount the LEDs vertically and
bend so they will be visible
through the window in the
housing.
7. LEDs. Watch the polarity!
LD...
CATH ODE
IC1 : VK8074
programmed PIC18F2450-I/SP
11. IC, watch the position of
the notch!
X1 : 4MHz
9. Quartz crystal
X...
IMPORTANT : Apply an
extra layer of solder on all
copper PCB tracks.
For use with VM151 mount
a jumper wire for SK2.
6
Construction
SK1
8. USB connector
TX433
The “ANT” connection will match
the markings on the PCB. Refer
to the illustration or package.
10. Transmitter module
LD1 : 3mm RED 'USB'
LD2 : 3mm RED 'USB'
LD3 : 3mm RED 'RX/TX'
LD4 : 3mm RED 'ON'
Mount the LEDs vertically and
bend so they will be visible
through the window in the
housing.
7. LEDs. Watch the polarity!
LD...
CATH ODE
IC1 : VK8074
programmed PIC18F2450-I/SP
11. IC, watch the position of
the notch!
X1 : 4MHz
9. Quartz crystal
X...
IMPORTANT : Apply an
extra layer of solder on all
copper PCB tracks.
For use with VM151 mount
a jumper wire for SK2.
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