Velleman projects K8045 Assembly instructions - Manual (Page 11)

11
How to construct an RS232 cable :
Or you can buy a pre-assembled cable. Careful : this is not a null-modem cable
How to establish a wireless link :
Wireless data transfer between the PC/terminal and the K8045 is possible by
means of optional RF transmitter/receiver modules (Velleman part# TX433/
RX433). Transmission quality depends on your environment. Other RF sources
might interfere with your signal (and will cause occasional ‘garbage’ on-screen).
The receiver is mounted on the left hand side of the K8045 board. Watch the
position, the coils point to the LCD of the K8045. If you choose wireless opera-
tion, make sure to set jumper SK3 to ‘RF’
24. Control options
SUBD 9 pole female SUBD 9 pole male
TO PC TO K8045
3 3 5 5
2-3 meter max.
3 5
9V Battery
+
-
Z
A
R
TX433
Control options
To pc
SUBD 9 pole female
Z : 5V1 zenerdiode 0,6W
A : antenna (30 - 40cm)
R : 3K9 resistor (orange - white - red)