________________________________________________________________________________________________________________________________________________
Please read this
(even if you do not read any other part of this manual)
Power Supply
The
Beta H series
of Touch Computers requires a 5 volt DC power input
is 4.75 to 5.25 volts DC.
Your Beta H series computer has protection for over voltage up to 24 volts.
It
does not have protection
for reverse polarity, so please
not have reverse polarity protection is that we use the incoming 5 volts power for the USB circuitry, etc rather
than creating another power supply to keep costs as low as possible.
Power can be applied through the following connectors:
1.
Jack plug (2.5mm centre diameter which is the
below:
2.
Screw terminal connector when ordered instead of the Jack connector
3.
If the Screw terminal PCB (as opposed to the screw terminal connector in 2 above) is fitted then
power can be applied through pins
and
not
A
and
B.
Serial Ports
Your Beta H series Touch Computer has three asynchronous serial ports.
Ports 1 and 2 are fixed as RS232 ports and are both TX + RX only (i.e. no hardware handshaking
usual an issue these days as the Beta is fast enough to cope with most baud rates, etc).
The console port, which is the default communications port for Linux and Android, is COM 1 and is available on
P2 on the Picoblade connector PCB. If you have the Screw Terminal PCB then the COM 1 port is on
and the ground is on pin
p
. If you don’t know whic
have to read some more pages .
Beta Touch Computer
____________________________________________________________________________________________________________________________________________
(even if you do not read any other part of this manual)
of Touch Computers requires a 5 volt DC power input ± 0.25 volts; so the voltage input
Your Beta H series computer has protection for over voltage up to 24 volts.
for reverse polarity, so please take care when applying power. The reason it does
not have reverse polarity protection is that we use the incoming 5 volts power for the USB circuitry, etc rather
than creating another power supply to keep costs as low as possible.
rough the following connectors:
diameter which is the positive contact) with a 5.5mm overall diameter. See
Screw terminal connector when ordered instead of the Jack connector
If the Screw terminal PCB (as opposed to the screw terminal connector in 2 above) is fitted then
power can be applied through pins
a
(5 volts) and
b
. Please note that these are lower case letters
uter has three asynchronous serial ports.
Ports 1 and 2 are fixed as RS232 ports and are both TX + RX only (i.e. no hardware handshaking
usual an issue these days as the Beta is fast enough to cope with most baud rates, etc).
port, which is the default communications port for Linux and Android, is COM 1 and is available on
the Picoblade connector PCB. If you have the Screw Terminal PCB then the COM 1 port is on
f you don’t know which connector PCB you have then sorry but you are going to
Beta Touch Computer
_____________________________________
Page | 9
voltage input range
take care when applying power. The reason it does
not have reverse polarity protection is that we use the incoming 5 volts power for the USB circuitry, etc rather
overall diameter. See
If the Screw terminal PCB (as opposed to the screw terminal connector in 2 above) is fitted then
. Please note that these are lower case letters
Ports 1 and 2 are fixed as RS232 ports and are both TX + RX only (i.e. no hardware handshaking – which is not
port, which is the default communications port for Linux and Android, is COM 1 and is available on
the Picoblade connector PCB. If you have the Screw Terminal PCB then the COM 1 port is on pins
n
,
o
h connector PCB you have then sorry but you are going to
